The heliobiology evidence base, organized

Geomagnetic disturbances driven by solar activity enhance total and cardiovascular mortality risk in 263 U.S. cities

Environmental Health

Across 263 U.S. cities, days with higher solar-driven geomagnetic disturbance (Kp) showed significantly elevated total, cardiovascular, and myocardial-infarction mortality, with effects comparable to or stronger than PM2.5. MI deaths +0.7% per SD Kp in fall (95% CI 0.43-0.94, p=0.00001) and +1.0% in winter (95% CI 0.4-1.62); dataset of 2,008,990 city-days and 44,220,261 deaths over ~30 years.

Geomagnetic storms can trigger stroke: evidence from 6 large population-based studies in Europe and Australasia

Stroke (American Heart Association)

Pooled individual-participant data from six population-based incidence studies show geomagnetic storms significantly increase stroke risk, with the strongest triggering effect in people under 65. Geomagnetic storms (Ap >=60) raised stroke risk 19% overall (95% CI 11-27%); strong/severe storms raised risk up to 52%. n=11,453 strokes over 16,031,764 person-years.

The influence of meteorological and geomagnetic factors on acute myocardial infarction and brain stroke in Moscow, Russia

International Journal of Biometeorology

In Moscow, both myocardial infarction and stroke hospitalizations increased significantly with geomagnetic activity, independent of temperature and barometric pressure effects. Relative risk during geomagnetic storms: MI RR = 1.29 (95% CI 1.19-1.40); stroke RR = 1.25 (95% CI 1.10-1.42).

Associations between Space Weather Events and the Incidence of Acute Myocardial Infarction and Deaths from Ischemic Heart Disease

Atmosphere (MDPI)

In the Kaunas population, acute myocardial infarction morbidity and ischemic-heart-disease mortality rose significantly in the window from 3 days before to 1 day after geomagnetic storms, with a stronger effect in the spring-autumn season. 12,330 AMI events (6,942 men / 5,388 women) and 3,742 IHD deaths analyzed over 2000-2015; elevated adjusted rate ratios around geomagnetic storms.

Possible Associations between Space Weather and the Incidence of Stroke

Atmosphere (MDPI)

In Kaunas, stroke incidence increased significantly during and around strong/severe geomagnetic storms, with subarachnoid hemorrhage most strongly affected. Strong/severe geomagnetic storms raised subarachnoid-hemorrhage risk by 58% and hemorrhagic stroke by 30%; n=9,226 strokes (597 SAH, 1,147 ICH, 7,482 ischemic). Kaunas Stroke Register 1986-2010.

Influence of geomagnetic disturbances on myocardial infarctions in women and men from Brazil

Communications Medicine (Nature)

In a low-geomagnetic-latitude Brazilian city, myocardial-infarction admissions were markedly more frequent under disturbed geomagnetic conditions, with women showing greater susceptibility. Relative frequency of MI during geomagnetically disturbed days was ~3x that of quiet days; cohort of 871 men and 469 women (São José dos Campos, 1998-2005).

The association between phenomena on the sun, geomagnetic activity, meteorological variables, and cardiovascular characteristic of patients with myocardial infarction

International Journal of Biometeorology

Among Kaunas MI patients, the risk of ST-elevation MI rose significantly two days after geomagnetic storms and solar particle events, especially in higher-risk patients with prior cardiac, renal, or pulmonary disease. STEMI risk >1.5x increased two days after geomagnetic storms in patients with prior MI, stable angina, renal or pulmonary disease; n=1,979 hospitalized patients.

Associations between Quasi-biennial Oscillation phase, solar wind, geomagnetic activity, and the incidence of acute myocardial infarction

International Journal of Biometeorology

In the Kaunas IHD register, acute myocardial infarction incidence was significantly and positively associated with active-stormy local geomagnetic activity and elevated solar-wind dynamic pressure and speed. AMI rate ratio 1.06 (95% CI 1.01-1.10) for active-stormy geomagnetic activity and 1.02 per 1 nPa solar-wind dynamic pressure (lag 4 d); register data 2000-2012.

A possible association between space weather conditions and the risk of acute coronary syndrome in patients with diabetes and the metabolic syndrome

International Journal of Biometeorology

Space weather, particularly high-speed solar wind, was associated with a substantially increased risk of acute coronary syndrome in patients with diabetes and metabolic syndrome, indicating cardiometabolic vulnerability. During high-speed solar wind, ACS risk in diabetic patients rose 1.95x (OR = 1.95, 95% CI 1.36-2.79); n=1,548 ACS patients (Kaunas, 2000-2003).

The effect of geomagnetic activity on cardiovascular parameters

Biomedicine & Pharmacotherapy

Geomagnetic activity systematically modulates acute cardiovascular events: high-activity periods raise acute myocardial infarction admissions and blood coagulation/pressure, while lowest-activity periods coincide with peaks in sudden cardiac death and ventricular arrhythmias. High GMA linked to increased AMI admissions, higher diastolic pressure and platelet aggregation; lowest GMA linked to peak sudden cardiac deaths and more ventricular/supraventricular extrasystoles and ventricular tachycardia.

The Influence of Geomagnetic Storms on the Risks of Developing Myocardial Infarction, Acute Coronary Syndrome, and Stroke: Systematic Review and Meta-analysis

Journal of Medical Physics

Systematic review and meta-analysis confirms geomagnetic storms elevate the risk of myocardial infarction, acute coronary syndrome, and stroke across the qualifying studies. Mean relative risk 1.3-1.5 for MI/ACS and 1.25-1.6 for stroke; 6 studies meeting inclusion criteria (screened from 644 articles).

Exploring the Potential Observations Between Geomagnetic Activity and Cardiovascular Events: A Scoping Review

Cureus

Scoping review of six decades of research finds the large majority of studies report significant positive correlations between geomagnetic activity and cardiovascular events including MI, ACS, stroke, arrhythmia, and mortality. 28 of 36 studies (77.8%) reported significant correlations; only 8 found no effect; coverage 1964-2023.

Solar and geomagnetic activity enhance the effects of air pollutants on atrial fibrillation

EP Europace

Intense solar/geomagnetic activity in the 6-24 h before an AF episode sharply amplified PM2.5's effect on atrial fibrillation risk. OR 1.7 (95% CI 1.3-2.3, P=0.0001) per IQR PM2.5 during high solar-wind periods vs OR 1.2 (P=0.27) in quiet periods; 335 AF episodes in 176 patients

Correlation of geomagnetic activity with implantable cardioverter defibrillator shocks and antitachycardia pacing

Mayo Clinic Proceedings

In a very large remote-monitoring cohort, ventricular-arrhythmia ICD therapies varied significantly and inversely with daily geomagnetic activity. 1.29 vs 0.94 shocks/1000 patients on quiet vs storm days (P<.001); A-index correlation R=0.22, P<.001; daily mean 59,468 patients (ALTITUDE/LATITUDE, 2009-2012)

Cardiac arrhythmia and geomagnetic activity

Indian Pacing and Electrophysiology Journal

Life-threatening arrhythmias, ventricular tachycardia, ICD discharges and sudden cardiac death cluster significantly on days of lowest geomagnetic activity (high cosmic-ray flux). Sudden cardiac death n=480 higher on lowest-GMA days (p<0.01); VT n=3019: 27% low-GMA vs 17% higher-GMA (p=0.006); AF n=653 inverse r=-0.97 (p=0.02)

Geomagnetic disturbances reduce heart rate variability in the Normative Aging Study

Science of the Total Environment

Intense geomagnetic disturbances acutely lowered heart rate variability in elderly men, with stronger effects in those with coronary heart disease. rMSSD -14.7 ms (95% CI -23.1,-6.3; p=0.0007) and SDNN -8.2 ms (95% CI -13.9,-2.5; p=0.006) at 0-15 h; 809 men, 2540 visits over 17 years

The influence of geomagnetic storms on the risks of developing myocardial infarction, acute coronary syndrome, and stroke: systematic review and meta-analysis

Journal of Medical Physics

Pooled analysis confirms geomagnetic storms raise the risk of myocardial infarction, acute coronary syndrome and stroke. Mean relative risk 1.3-1.5 for MI/ACS and 1.25-1.6 for stroke; 6 studies selected from 644 screened

Potential influence of geomagnetic activity on blood pressure statistical fluctuations at mid-magnetic latitudes

Communications Medicine

Six-year time-series across two Chinese cities links higher geomagnetic activity to elevated systolic blood pressure fluctuations, flagging risk for hypertensive individuals. Systolic BP vs detrended-Ap correlation rs=0.409 (p=0.0004) at 1-month lead; 554,319 BP measurements (Qingdao and Weihai)

Space weather phenomena on heart rate: a study in the Greek region

International Journal of Biometeorology

Cosmic-ray/geomagnetic variations were significantly associated with heart-rate changes in a Mediterranean (Greek) population, with women about twice as responsive as men. CRI-HR regression coefficient -0.025 (p=0.009) ascending phase; -0.138 (p<0.01) during the March 2012 Forbush decrease; 1318 individuals, ~20,149 measurements

The effect of space weather on human heart diseases in subauroral latitudes

Izvestiya, Atmospheric and Oceanic Physics

Myocardial-infarction emergency calls in subauroral Yakutsk peaked with sharp rises in planetary geomagnetic activity, attributed to nighttime magnetospheric substorms and Pi1 pulsations. Infarction maxima coincided with substorm-driven geomagnetic activity increases; Pi1 pulsations 0.5-3 Hz proposed as biotropic trigger (1992 max vs 1998 min)

Space weather and hypertensive crises at high latitudes (in Yakutsk)

E3S Web of Conferences (AFE-2023)

Ambulance-database analysis at high latitude shows geomagnetic (Kp) disturbances significantly coincide with surges in blood-pressure emergency calls and hypertensive crises during high solar-activity years. 57% of primary-hypertension patients sought emergency help and 7% had a hypertensive crisis (SBP from 180 mmHg, DBP from 120 mmHg) on disturbed days

Synchronization between geomagnetic field variations and human heart rate parameters: possible role of autonomic nervous system

Ekologiya cheloveka (Human Ecology)

Across hundreds of resting ECG sessions, heart rate synchronized with geomagnetic-field oscillations far more often than chance, implicating autonomic mediation of the cardiac response to space weather. Heart-rate synchronization in 32-40% of cases vs 9-28% for HRV parameters (p<0.001); 673 experiments (8 repeated-session + 39 single-session subjects)

Geomagnetic activity affects animal myocardial ischemia/reperfusion injury: an experimental-simulated study

International Journal of Biometeorology

In a rat model, severe simulated geomagnetic activity worsened myocardial ischemia/reperfusion injury via TLR4/NF-kB inflammation, providing a mechanism for space-weather cardiac risk. Severe GMA increased infarct size, CK/LDH, MDA and IL-1/IL-6/TNF-alpha and upregulated TLR4/TRAF6/NF-kB; weak GMA did the opposite (protective)

Artificial reproduction of magnetic fields produced by a natural geomagnetic storm increases systolic blood pressure in rats

International Journal of Biometeorology

Laboratory replication of a real storm's sudden-commencement magnetic profile reproducibly raised rats' arterial pressure, demonstrating a direct causal geomagnetic-to-blood-pressure pathway. 7-9% increase in arterial pressure during the (non-linear) storm sudden-commencement replication (statistically significant); a linear control profile produced no significant effect

Exploring the potential observations between geomagnetic activity and cardiovascular events: a scoping review

Cureus

Scoping review finds the majority of studies report geomagnetic and cosmic variability coinciding with elevated myocardial infarction, ACS, stroke and sudden-cardiac-death risk. 28 of 36 included studies reported positive associations linking space-weather phenomena to cardiovascular events

Geomagnetic disturbances reduce heart rate variability in the Normative Aging Study

Science of The Total Environment

In a large longitudinal cohort of elderly men, intense geomagnetic activity in the preceding hours significantly reduced time-domain heart rate variability (both rMSSD and SDNN). n=809 men, 2,540 visits; a 75th-pct rise in 15-h Kp gave rMSSD -14.7 ms (95% CI -23.1 to -6.3, p=0.0007) and SDNN -8.2 ms (p=0.006). DOI: 10.1016/j.scitotenv.2022.156235

Space weather phenomena on heart rate: a study in the Greek region

International Journal of Biometeorology

Human heart rate was significantly associated with geomagnetic activity (Dst) and cosmic-ray-intensity variations across solar cycle 24, with women showing roughly double the correlation strength of men. n=9,911 measurements; ascending-phase CRI-HR r=-0.024 (p=0.011), Dst-HR p=0.012; women 40% vs men 20% with r>0.25. DOI: 10.1007/s00484-022-02382-3

Long-Term Study of Heart Rate Variability Responses to Changes in the Solar and Geomagnetic Environment

Scientific Reports

Over five months of continuous monitoring, daily autonomic (HRV) activity tracked changes in cosmic rays, solar radio flux and Schumann resonance power even during undisturbed periods, with strong effects on VLF, HF and total power. n=16, 72 h/week for 5 months; cosmic-ray responses across HRV metrics at Z=5.20-11.88 (p<0.01). DOI: 10.1038/s41598-018-20932-x

Synchronization of Human Autonomic Nervous System Rhythms with Geomagnetic Activity in Human Subjects

International Journal of Environmental Research and Public Health

Participants' HRV rhythms significantly correlated with solar wind speed, Kp, Ap, solar radio flux, cosmic ray counts and Schumann resonance power, and synchronized with one another despite separate locations, indicating a shared magnetic-environmental driver of autonomic function. n=9 over 31 days, 253 recordings; Schumann resonance power vs HRV total power r=0.46 (p<0.01); ~2.5-day synchronization. DOI: 10.3390/ijerph14070770

Meta-analyzed heart rate variability, exposure to geomagnetic storms, and the risk of ischemic heart disease

Scripta Medica (Brno)

Seminal meta-analysis showing reduced heart rate variability is associated with ischemic heart disease and that geomagnetic storms significantly depress HRV, linking space weather to cardiovascular risk via autonomic suppression. HRV decrease with IHD: Stockholm 20.5% (p=0.002), Tokyo 20.0% (p=0.04); cosmonauts ~30% drop in rMSSD during storms (p=0.041). PMID: 11543511

Geomagnetic disturbance associated with decrease in heart rate variability in a subarctic area

Biomedicine & Pharmacotherapy

In healthy subjects at 70 degrees N, days of high geomagnetic disturbance showed significantly elevated heart rate and markedly reduced heart rate variability. n=8; HRV -25.2% (p=0.002) and HR +5.9% (p=0.020) on disturbed vs quiet days. DOI: 10.1016/s0753-3322(01)90005-8

Graded response of heart rate variability, associated with an alteration of geomagnetic activity in a subarctic area

Biomedicine & Pharmacotherapy

Heart rate variability fell in a dose-dependent (graded) fashion with rising geomagnetic activity, with the largest suppression in total power and the very-low- and ultra-low-frequency bands on the most disturbed days. n=5; total power -18.1%/-31.6% (p=0.0013), VLF -12.9%/-28.6% (p=0.021), ULF (p=0.010). PMID: 12653181

Long-Term Study of the Synchronization Effect between Geomagnetic Field Variations and Minute-Scale Heart-Rate Oscillations in Healthy People

Atmosphere

Across an 11-year dataset, minute-scale heart-rate oscillations showed a statistically significant biogeophysical synchronization with geomagnetic field variations, most evident in the 8-13 minute period range. 403 recordings (2012-2023); synchronization in 40-53% of records at p<0.0045. DOI: 10.3390/atmos15010134

Differences in the Sensitivity of the Baroreflex of Heart Rate Regulation to Local Geomagnetic Field Variations in Normotensive and Hypertensive Humans

Life

Baroreflex-mediated heart rate regulation synchronized with local geomagnetic field fluctuations, and this coupling was significantly stronger in normotensive than in hypertensive individuals, tying autonomic sensitivity to cardiovascular status. n=41 (14 normotensive, 26 hypertensive); synchronization in 100% of normotensives vs 69.2% of hypertensives (p=0.034). DOI: 10.3390/life12071102

Effects of the geomagnetic field time-varying components compensation as evidenced by heart rate variability of healthy males

Life Sciences in Space Research

In a shielded laboratory, geomagnetic storms produced significant HRV changes (SDNN, LF) in healthy men, and these changes were abolished when the field's time-varying components were compensated, experimentally verifying that geomagnetic variation drives the autonomic response. n=25 healthy young males; on storm days SDNN p=0.033 and LF p=0.011 vs baseline, effect cancelled under compensation. PMID: 35065759

Space Weather Effects on Heart Rate Variations: Sex Dependence

Atmosphere

In a large mixed-sex sample, geomagnetic activity produced statistically significant heart-rate variations, with women more sensitive to the physical environmental changes than men. n=1,221 (687 men, 534 women), 3 Greek regions, 2011-2018; statistically significant geomagnetic-activity effect on heart rate (women > men). DOI: 10.3390/atmos15060685

Global Study of Human Heart Rhythm Synchronization with the Earth's Time Varying Magnetic Field

Applied Sciences

Across five continents, participants' heart rhythms (HRV) became positively correlated with the local time-varying magnetic field, providing multi-site evidence of coupling between the autonomic nervous system and the geomagnetic field. n=104 across 5 countries; HRV positively correlated with local magnetic field, synchronization significantly elevated on the coordinated event day. DOI: 10.3390/app11072935

Statistical Associations between Geomagnetic Activity, Solar Wind, Cosmic Ray Intensity, and Heart Rate Variability in Patients after Open-Heart Surgery

Atmosphere

In post-cardiac-surgery patients, geomagnetic activity and solar wind speed were significantly associated with heart rate variability, notably reduced SDNN and altered VLF/LF/HF spectral power, showing space weather modulates autonomic recovery in a clinical population. n=220 patients, 495 ECG recordings; low geomagnetic activity/solar wind linked to lower SDNN and reduced VLF/LF/HF power. DOI: 10.3390/atmos13081330

The effect of geomagnetic disturbances in capillary blood flow in ischemic heart disease patients

Biofizika (Biophysics)

Seminal capillaroscopy cohort: during magnetic storms, pathological capillary-flow changes (perivascular edema, red-cell aggregation, slowed flow) appeared in the majority of ischemic-heart-disease patients, and geomagnetic disturbances affected >2.5x as many patients as atmospheric-pressure changes. n=80 IHD patients (47 men, 33 women); pathological capillary changes in 71.5% of acute MI patients and 64.8% of angina patients during storms; geomagnetic effect >2.5x that of atmospheric pressure.

Effects of helio-geomagnetic disturbances on the human hemorheological characteristics

Aviakosmicheskaia i Ekologicheskaia Meditsina (Aerospace and Environmental Medicine)

In healthy men, core hemorheological parameters — blood viscosity, hematocrit, fibrinogen, and both erythrocyte and thrombocyte aggregation — showed statistically significant responses to changes in solar and geomagnetic activity. n=62 essentially healthy men; statistically significant responses in viscosity, hematocrit, fibrinogen, and erythrocyte/platelet aggregation.

Influence of local geomagnetic storms on arterial blood pressure

Bioelectromagnetics

Arterial blood pressure rose with increasing geomagnetic activity; both systolic and diastolic pressure were significantly elevated from one day before through two days after local geomagnetic storms, independent of sex and medication. n=86 volunteers, 2,799 recordings; SBP and DBP increased in ~91-92% of subjects, overall ~12% elevation; ~6-8 mmHg rise from quiet to active conditions (up to ~15 mmHg SBP for severe storms).

Influence of geomagnetic activity and atmospheric pressure in hypertensive adults

International Journal of Biometeorology

In hypertensive adults, the largest correlations of systolic and diastolic blood pressure were with the horizontal geomagnetic field component during a geomagnetic storm, with significant BP changes (especially systolic in men) attributable to the geomagnetic field. n=8 hypertensive volunteers (Mexico City, 2014 storm); superposed-epoch analysis showed the greatest number of significant BP changes in systolic pressure for men; strongest correlations at night.

Heliogeophysical Aspects of Rheology: New Technologies and Horizons of Preventive Medicine (in: Rheology - New Concepts, Applications and Methods)

IntechOpen (peer-reviewed edited volume)

In cardiovascular patients, whole-blood viscosity increased with solar activity and correlated directly with sunspot number, while experimental geomagnetic-field weakening produced a statistically significant fall in blood viscosity — directly tying hemorheology to heliogeophysical state. Whole-blood viscosity rose in 99% of cardiovascular patients, correlating with sunspot number (r=0.61, p<0.05, n=37); geomagnetic weakening significantly decreased viscosity in hypertensives (p=0.01).

Geomagnetic changes as a risk factor causing oxidative stress in human erythrocytes

Health Risk Analysis

Geomagnetic-field disturbance was significantly correlated with antioxidant-enzyme activity (superoxide dismutase and catalase) in human erythrocytes, indicating that geomagnetic conditions drive oxidative stress and superoxide-radical production in red blood cells. Statistically significant correlation between erythrocyte SOD/catalase activity and the magnitude of geomagnetic-field disturbance (healthy volunteers, Nizhny Novgorod region).

A possible association between space weather conditions and the risk of acute coronary syndrome in patients with diabetes and the metabolic syndrome

International Journal of Biometeorology

In a large ACS cohort, geomagnetic storms, solar proton events, and high-speed solar wind each raised acute-coronary-syndrome risk, with the effect strongest in patients with diabetes and metabolic syndrome — a vascular/cardiometabolic vulnerability signal. n=1,548 ACS patients (Kaunas, 2000-2003); ACS risk in diabetic patients rose ~1.95x on high-speed solar-wind days versus days without such events.

The role of solar and geomagnetic activity in endothelial activation and inflammation in the NAS cohort

PLOS ONE

In the Normative Aging Study, solar activity and geomagnetic disturbances significantly increased circulating markers of endothelial activation (soluble ICAM-1 and VCAM-1) and inflammation (CRP), directly linking space weather to the vascular endothelium and blood. n=742 participants, 2,273 observations; per-IQR 28-day IMF: sICAM-1 +10.1% (95% CI 8.34-11.9) and sVCAM-1 +15.3% (95% CI 12.7-17.8); CRP +1.34% with sunspot number.

Solar Activity Is Associated With Diastolic and Systolic Blood Pressure in Elderly Adults

Journal of the American Heart Association

In elderly men, higher solar and geomagnetic activity was positively and significantly associated with both diastolic and systolic blood pressure, with effects persisting after adjustment for air pollutants. n=675 men, 1,949 BP measurements (2000-2017); per 16-day window, DBP +2.5 mmHg (95% CI 1.7-3.2) for IMF and +2.8 mmHg for sunspot number; SBP +2.1-2.7 mmHg.

Potential influence of geomagnetic activity on blood pressure statistical fluctuations at mid-magnetic latitudes

Communications Medicine

A six-year time series of over half a million blood-pressure measurements showed that population BP fluctuations positively correlate with geomagnetic activity, sharing bimodal annual and multi-month periodicities, with SBP and DBP rising during elevated geomagnetic activity and geomagnetic storms. >500,000 BP measurements (Qingdao & Weihai, China); systolic BP Spearman rs = 0.351-0.516 (p<=0.05) with a 1-2 month lag; correlations slightly stronger in females.

Effect of geomagnetic storms on the erythrocyte sedimentation rate in ischemic patients

Critical Reviews in Biomedical Engineering

Erythrocyte sedimentation rate dynamics in ischemic patients show significantly greater intensity of variation during geomagnetic storms than on quiet days, reflecting a real red-blood-cell/erythrocyte-aggregation response to geomagnetic field fluctuations. Markedly greater ESR variability during geomagnetic storms vs. low-activity days (Crit Rev Biomed Eng 29(1):65-76; PMID 11321648; DOI 10.1615/critrevbiomedeng.v29.i1.20)

Relation between microcirculation parameters and Pc3 geomagnetic pulsations

Biofizika (Biophysics)

Long-term laser-monitoring of healthy volunteers showed that rising geomagnetic activity increased tissue perfusion and blood-flow variability, with neurogenic and myogenic microcirculatory oscillations most sensitive to geomagnetic activity and matching the Pc3 pulsation frequency band. Increased perfusion and amplified neurogenic/myogenic oscillations in responders; oscillation frequency coincides with Pc3 pulsations explaining Kp-index correlation (Biofizika 55(4):732-9; PMID 20968090)

Geomagnetic storm under laboratory conditions: randomized experiment

International Journal of Biometeorology

In a controlled randomized experiment, healthy volunteers exposed to an artificially replayed 6-hour geomagnetic storm versus a quiet regime showed measurable differences in capillary blood velocity and blood pressure, experimentally verifying that geomagnetic disturbance alters human microcirculation. Storm vs. quiet magnetic-field regimes produced distinct capillary blood velocity and blood pressure responses in a subgroup of subjects (Int J Biometeorol 62(4):501-512; PMID 29030697; DOI 10.1007/s00484-017-1460-8)

The role of solar and geomagnetic activity in endothelial activation and inflammation in the NAS cohort

PLOS ONE

In the Normative Aging Study, higher solar and geomagnetic activity were significantly associated with elevated circulating endothelial-activation markers (sICAM-1 and sVCAM-1), indicating space weather upregulates vascular endothelial activation and inflammation. Significant positive associations between sICAM-1 and sVCAM-1 and solar/geomagnetic parameters (IMF, SSN, Kp); authors conclude space weather may upregulate endothelial activation and inflammation (PLOS ONE 17(7):e0268700; PMID 35881632; DOI 10.1371/journal.pone.0268700)

Geomagnetic disturbances reduce heart rate variability in the Normative Aging Study

Science of the Total Environment

Geomagnetic disturbances produced significant reductions in heart rate variability up to 24 hours before ECG in a large elderly cohort, a cardiovascular-autonomic effect that is an established risk marker for adverse circulatory events. 75th-percentile 15-hr Kp increase → −14.7 ms rMSSD (95% CI −23.1 to −6.3, p=0.0007) and −8.2 ms SDNN (95% CI −13.9 to −2.5, p=0.006) (Sci Total Environ 839:156235; PMID 35644403; DOI 10.1016/j.scitotenv.2022.156235)

Linkages Between Geomagnetic Activity and Blood Pressure

Cureus

A review of four databases concludes the preponderance of evidence supports that space-weather-driven changes in the geomagnetic field raise blood pressure, with the largest increases during geomagnetic storms. Reported BP increases ~3-8 mmHg overall, both systolic and diastolic rising in most cases (Cureus 15(9):e45637; PMID 37868483; DOI 10.7759/cureus.45637)

Solar Activity Is Associated With Diastolic and Systolic Blood Pressure in Elderly Adults

Journal of the American Heart Association

In elderly men, increased interplanetary magnetic field, sunspot number, and Kp index were positively and significantly associated with elevated diastolic and systolic blood pressure, strongest when averaged over 16-28 days before measurement. IQR increases (16-day) → +2.5 (95% CI 1.7-3.2), +2.8 (2.1-3.4), +1.7 (0.8-2.5) mmHg diastolic BP for IMF, sunspot number, Kp respectively (J Am Heart Assoc 10(21):e021006; PMID 34713707; DOI 10.1161/JAHA.120.021006)

Correlations between geomagnetic field and global occurrence of cardiovascular diseases: evidence from 204 territories in different latitude

BMC Public Health

Across 204 countries and territories (1996-2019), total geomagnetic field intensity and geomagnetic disturbances were positively associated with cardiovascular disease mortality, with disturbance effects most pronounced at higher latitudes. Positive correlation of total GMF intensity with CVD mortality (coefficient 0.009, 95% CI 0.006-0.011); geomagnetic disturbance positively associated with CVD mortality in high-income high-latitude regions (BMC Public Health 23:1771; PMID 37697364; DOI 10.1186/s12889-023-16698-1)

Associations between Space Weather Events and the Incidence of Acute Myocardial Infarction and Deaths from Ischemic Heart Disease

Atmosphere

In Kaunas, Lithuania (2000-2015), geomagnetic storms and other space-weather events were associated with a higher risk of acute myocardial infarction and ischemic-heart-disease death, with elevated risk from three days before to one day after a storm and stronger effects in spring-autumn. Higher risk of AMI and IHD death in the window 3 days before to 1 day after geomagnetic storms; stronger effect during spring-autumn; 12,330 AMI events and 3,742 IHD deaths, 2000-2015 (Atmosphere 12(3):306; DOI 10.3390/atmos12030306)

Space weather and dangerous phenomena on the Earth: principles of great geomagnetic storms forcasting by online cosmic ray data

Annales Geophysicae, 23(9), 2997-3002

Great geomagnetic storms accompanied by cosmic-ray Forbush decreases are dangerous for human health, increasing the rate of myocardial infarctions, brain strokes and road-traffic traumas; cosmic-ray monitoring can forecast such storms 10-15 h ahead. Neutron-monitor/muon-telescope worldwide online data used to forecast great GMA storms at least 10-15 h before sudden commencement.

Clinical cosmobiology: distribution of deaths during 180 months and cosmophysical activity. The Lithuanian study, 1990-2004. The role of cosmic rays

Medicina (Kaunas), 43(10), 824-831

Over 15 years, monthly total death number correlated significantly and positively with cosmic ray activity (and inversely with solar activity), stronger in men; stroke and non-cardiovascular deaths tracked cosmic rays most strongly. 630,205 deaths (333,035 male) analyzed; monthly deaths significantly correlated with cosmic-ray indices.

Three kinds of cosmophysical activity: links to temporal distribution of deaths and occurrence of acute myocardial infarction

Medical Science Monitor, 10(2), CR80-CR84

Cosmic ray activity showed the strongest correlation with monthly mortality (notably non-cardiovascular and suicide deaths) and related to acute myocardial infarction occurrence across a 144-month series. 504,243 deaths (Lithuania 1990-2001) analyzed over 144 consecutive months.

Days of "Zero" level geomagnetic activity accompanied by the high neutron activity and dynamics of some medical events - Antipodes to geomagnetic storms

Health, 5(5), 855-861

On days of zero geomagnetic activity combined with elevated cosmic-ray (neutron) activity, medical emergencies and total deaths rose significantly, with upward trends in sudden cardiac death and cerebral stroke - showing high cosmic-ray flux is itself hazardous, not only geomagnetic storms. Emergencies n=1,567,576 (rise p<0.0001) and total deaths n=46,360 (rise p=0.0076) on zero-GMA/high-neutron days.

Long-Term Study of Heart Rate Variability Responses to Changes in the Solar and Geomagnetic Environment

Scientific Reports, 8, 2663

Autonomic function (HRV) tracks the space-weather environment, with increased cosmic-ray flux robustly correlated with higher HRV (parasympathetic activation) even during quiet solar conditions. 16 participants, 5 months; cosmic rays vs total HRV power Z=7.30-10.49 (p<0.01); vs HF power Z=6.63-10.16.

Geomagnetic and Cosmic Ray Activity Effect on Heart Rate during the Solar Cycle 24

Atmosphere, 15(2), 158

Across Solar Cycle 24, both cosmic-ray intensity variations and geomagnetic activity significantly affected human heart rate, with mean heart rate highest during periods of strong geomagnetic activity and largest cosmic-ray intensity variation. 1,353 individuals (mean HR 71.3 +/- 0.4 bpm); significant cosmic-ray and geomagnetic effects on HR (p<0.05).

Human Physiological Parameters Related to Solar and Geomagnetic Disturbances: Data from Different Geographic Regions

Atmosphere, 12(12), 1613

Across four geographic regions, heart rate, blood pressure and cardiac arrhythmias respond to space-weather activity, and the most significant increases in myocardial infarctions and strokes occur when geomagnetic disturbances coincide with Forbush decreases in cosmic-ray intensity. Overview of NKUA heliobiological studies; MI and stroke increases greatest when GMA disturbance coincides with cosmic-ray Forbush decreases.

Cross-spectrally coherent ~10.5- and 21-year biological and physical cycles, magnetic storms and myocardial infarctions

Neuroendocrinology Letters, 21(3), 233-258

Magnetic storms - largely accompanied by cosmic-ray Forbush decreases - trigger myocardial infarctions, with reduced heart rate variability advanced as the underlying autonomic mechanism, in coherence with ~10.5- and 21-year solar cycles. Magnetic storms trigger myocardial infarctions with mechanisms relating to reduced heart rate variability; ~10.5- and 21-year cross-spectral coherence.

A model for photoreceptor-based magnetoreception in birds

Biophysical Journal 78(2):707-718

Seminal theoretical model showing that radical-pair chemistry in a retinal photoreceptor (later identified as cryptochrome) can transduce the Earth's magnetic field, founding the radical-pair mechanism of magnetoreception. Demonstrated that fields of geomagnetic strength (~50 µT) and weaker produce significantly different singlet/triplet reaction yields for different radical-pair alignments.

Magnetoreception and its use in bird navigation

Current Opinion in Neurobiology 15(4):406-414

Authoritative review affirming that birds possess two magnetodetection mechanisms — a magnetite-based receptor near the beak and a light-dependent radical-pair (cryptochrome) system in the eye. Synthesizes behavioral, anatomical, and biophysical evidence for two independent, functionally demonstrated magnetosensory pathways.

Magnetic isotope effect of magnesium in phosphoglycerate kinase phosphorylation

Proceedings of the National Academy of Sciences USA 102(31):10793-10796

Enzymatic ATP synthesis is a spin-dependent ion-radical process: phosphoglycerate kinase loaded with the magnetic isotope 25Mg produces markedly more ATP than with non-magnetic 24Mg/26Mg, demonstrating nuclear-spin control of a core biochemical reaction. ATP production 2.6× higher with 25Mg2+ than with 24Mg2+ (magnetic vs non-magnetic nucleus).

Magnetic intensity affects cryptochrome-dependent responses in Arabidopsis thaliana

Planta 225(3):615-624

First demonstration in a living organism that a magnetic field modulates a cryptochrome-mediated response: elevated field intensity enhanced blue-light (cryptochrome) growth inhibition, anthocyanin accumulation, and CRY2 degradation, with cryptochrome-null mutants unaffected. Raising ambient field from 33–44 µT to 500 µT enhanced cryptochrome-dependent hypocotyl growth inhibition under blue (but not red) light; no effect in cry1/cry2 mutants.

Chemical compass model of avian magnetoreception

Nature 453(7193):387-390

First experimental proof-of-principle that a chemical reaction can act as a compass: a model radical pair's lifetime and yield are altered by Earth-strength fields with the directional (anisotropic) response required for magnetoreception. Radical-pair lifetime changed by magnetic fields ≤50 µT (geomagnetic strength) with a measurable anisotropic chemical response.

Magnetic isotope and magnetic field effects on the DNA synthesis

Nucleic Acids Research 41(17):8300-8307

DNA synthesis by polymerase is spin-controlled: magnetic-nucleus ions (25Mg, 67Zn) suppress enzymatic DNA synthesis relative to non-magnetic isotopes, and an external magnetic field further modulates the rate, supporting an ion-radical mechanism. Magnetic 25Mg2+ (and 67Zn) suppressed DNA polymerase activity 2–3× versus non-magnetic 24Mg2+/26Mg2+.

Spin biochemistry modulates reactive oxygen species (ROS) production by radiofrequency magnetic fields

PLoS ONE 9(3):e93065

Weak oscillating radiofrequency magnetic fields alter the singlet/triplet partitioning of flavin-superoxide radical pairs in living cells, shifting cellular ROS output — direct evidence that weak fields act on cell biology via the radical-pair mechanism. A 7 MHz, 10 µT(RMS) RF field on a static 45 µT background decreased superoxide (O2·-) and increased hydrogen peroxide (H2O2).

The radical-pair mechanism of magnetoreception

Annual Review of Biophysics 45:299-344

Definitive review laying out the chemical and physical basis of the radical-pair mechanism and the evidence for magnetically sensitive, cryptochrome-based photochemistry as the leading mechanism of light-dependent magnetoreception. Comprehensive synthesis (46 pp.) of theory and experiment establishing radical pairs as the viable quantum mechanism for Earth-strength (~50 µT) field detection.

Biological effects of the hypomagnetic field: An analytical review of experiments and theories

PLoS ONE 12(6):e0179340

Systematic review affirming that near-elimination of the geomagnetic field (hypomagnetic conditions) produces significant biological effects across a wide range of organisms and cell systems. Over 95% of the studies tabulated report statistically significant biological effects of hypomagnetic-field exposure.

Low-intensity electromagnetic fields induce human cryptochrome to modulate intracellular reactive oxygen species

PLoS Biology 16(10):e2006229

Weak pulsed electromagnetic fields trigger rapid ROS accumulation and growth changes in mammalian cells through a cryptochrome-dependent mechanism, and human CRY restores magnetic-field behavioral responses in cryptochrome-null flies. A 1.8 mT, 10 Hz PEMF induced ROS accumulation and growth inhibition; effect abolished in CRY1/CRY2 double-knockout cells (cryptochrome-required).

Transduction of the geomagnetic field as evidenced from alpha-band activity in the human brain

eNeuro 6(2):ENEURO.0483-18.2019

First controlled electrophysiological evidence of a human geomagnetic sensory system: ecologically valid rotations of an Earth-strength field reproducibly suppress EEG alpha-band power, indicating the human brain actively processes geomagnetic input. Alpha power dropped by up to ~50% beginning ~100 ms after magnetic stimulation, selectively for Northern-Hemisphere-consistent field rotations; n = 34–36 participants.

Magnetic sensitivity of cryptochrome 4 from a migratory songbird

Nature 594(7864):535-540

Cryptochrome 4 from the night-migratory European robin is magnetically sensitive in vitro via a chain of four flavin–tryptophan radical pairs, and is more magnetically sensitive than CRY4 of non-migratory chicken and pigeon — direct molecular evidence for a cryptochrome magnetoreceptor. Purified robin ErCRY4 showed larger in vitro magnetic-field effects than chicken/pigeon CRY4; four successive FAD–Trp radical pairs identified by site-directed mutagenesis.

Long-term exposure to a hypomagnetic field attenuates adult hippocampal neurogenesis and cognition

Nature Communications 12(1):1174

Eliminating the geomagnetic field impairs adult hippocampal neurogenesis and learning in mice by lowering endogenous reactive oxygen species in neural stem cells; the deficit is rescued by restoring ROS or returning the field — showing the geomagnetic field is biologically required via a ROS mechanism. Hypomagnetic exposure reduced neural-stem-cell proliferation, neurogenesis, and ROS; pharmacological ROS elevation rescued neurogenesis and cognition.

Hypomagnetic field induces the production of reactive oxygen species and cognitive deficits in mice hippocampus

International Journal of Molecular Sciences 23(7):3622

Prolonged hypomagnetic-field exposure elevates hippocampal ROS and produces cognitive deficits in mice via dysregulated oxidative-stress genes, corroborating a ROS-mediated, radical-pair-type pathway by which the geomagnetic field acts on the brain. 8 weeks of hypomagnetic exposure significantly increased hippocampal ROS, with Nox4 up 2.55-fold and antioxidant Gpx3 downregulated.

Quantitative measurements of reactive oxygen species partitioning in electron transfer flavoenzyme magnetic field sensing

Frontiers in Physiology 15:1348395

Quantitatively demonstrates that magnetic field strength controls the branching of flavoenzyme radical-pair chemistry between superoxide and hydrogen peroxide, with experiment matching radical-pair-mechanism theory — a general magnetic-sensing route in redox cell biology. Lowering the field from 50 µT to 20 nT shifted ROS output (~13% less H2O2, ~10% more O2·-), increasing the O2·- triplet channel 4–5-fold relative to H2O2.

Magnetic isotope effects and nuclear spin catalysis in living cells and biomolecular motors: recent advances and future outlooks

Biophysical Reviews 15(5):1017-1029

Review affirming that magnetic isotopes and nuclear-spin catalysis modulate enzyme and molecular-motor activity, evidencing a spin-dependent rate-limiting step in core cellular biochemistry that external magnetic fields can influence. Enzymatic ATP hydrolysis proceeds 2–2.5× faster with magnetic 25Mg than with non-magnetic isotopes, indicating an electron-spin-dependent limiting step.

Electromagnetic fields act via activation of voltage-gated calcium channels to produce beneficial or adverse effects

Journal of Cellular and Molecular Medicine 17(8):958-965

Proposes and evidences voltage-gated calcium channels (VGCCs) as a primary molecular target of low-intensity EMFs, driving downstream Ca2+/nitric-oxide signaling — a mechanistic route linking weak fields to cellular effects. Across 23 studies, calcium-channel blockers blocked or greatly reduced diverse EMF effects, implicating VGCCs as the mediating target.

Magnetic field effects in biology from the perspective of the radical pair mechanism

Journal of the Royal Society Interface

Comprehensive review concluding that the quantum radical-pair mechanism plausibly explains the hundreds of documented effects of weak (static, hypomagnetic, oscillating) magnetic fields across biology, despite magnetic energies being far below thermal energy. J. R. Soc. Interface 19(193):20220325; 39-page synthesis of the radical-pair literature

HEK293 cell response to static magnetic fields via the radical pair mechanism may explain therapeutic effects of pulsed electromagnetic fields

PLoS ONE

Removing human HEK293 cells from Earth's geomagnetic field (low-level field) stimulated ROS-regulated gene expression comparably to pulsed electromagnetic field exposure, consistent with a cryptochrome radical-pair mechanism. A 10-minute low-level-field exposure significantly raised ROS-responsive gene expression (e.g., KIAA1211, TAS2R19)

Radical pairs may explain reactive oxygen species-mediated effects of hypomagnetic field on neurogenesis

PLoS Computational Biology

A flavin-superoxide [FADH•...O2•-] radical-pair model quantitatively reproduces how hypomagnetic-field exposure lowers superoxide and impairs adult hippocampal neurogenesis. Predicted triplet-yield ratio 1.34 +/- 0.18 matches the observed ~25% drop in proliferating cells after 8 weeks

Hypomagnetic field induces the production of reactive oxygen species and cognitive deficits in mice hippocampus

International Journal of Molecular Sciences

Eight weeks of hypomagnetic-field exposure significantly elevated ROS in the mouse hippocampus (dentate gyrus and cornu ammonis) and produced measurable anxiety and spatial/cognitive memory deficits. 10 mice per group; elevated ROS with cognitive impairment after 8-week exposure

Static magnetic fields regulate T-type calcium ion channels and mediate mesenchymal stem cells proliferation

Cells

Static magnetic-field exposure activates T-type (Cav3) calcium channels, which transduce the stimulus through MAPK signaling to accelerate mesenchymal stem-cell proliferation; T-type channel inhibition abolishes the effect. ~23% increased cell proliferation over 72 h at 140 mT

Human cryptochrome exhibits light-dependent magnetosensitivity

Nature Communications

Human CRY2, heavily expressed in the retina, functions as a light-dependent magnetosensor, restoring magnetic-field responses when expressed transgenically in cryptochrome-deficient Drosophila. Human CRY2 rescued light-dependent magnetoreception behavior in a null-mutant model

Magnetically stimulated myogenesis recruits a CRY2-TRPC1 photosensitive signaling axis

Cells

Brief low-energy pulsed magnetic fields enhance muscle-cell growth via a physical CRY2-TRPC1 (cryptochrome to calcium channel) signaling axis, with directional (field-orientation) dependence. 67% greater cell proliferation with downward- vs upward-directed 1.5 mT fields (10 min)

Moderate static magnetic fields enhance antitumor CD8+ T cell function by promoting mitochondrial respiration

Scientific Reports

Moderate static magnetic fields boosted ATP production and mitochondrial respiration in CD8+ T cells, effects lost when respiratory-chain (Uqcrb, Ndufs6) or magnetoreceptor (Isca1, Cry1/Cry2) genes were knocked down, and enhanced antitumor activity in vivo. 0.3 T exposure increased CD8+ T-cell ATP, cytokine secretion, and tumor suppression

Low magnetic fields stimulate cardiac mitochondrial bioenergetics with a bell-shaped response: Possibly via a radical pair mechanism

Computational and Structural Biotechnology Journal

Weak static magnetic fields (~0.27-1.9 mT) produced a bell-shaped increase in isolated cardiac mitochondrial respiration with a reciprocal decrease in ROS, attributed to electron-spin transitions in cytochromes and iron-sulfur clusters. Up to 40% increase in State 3 respiration with reduced mitochondrial ROS

Quantitative measurements of reactive oxygen species partitioning in electron transfer flavoenzyme magnetic field sensing

Frontiers in Physiology

Recombinant human electron transfer flavoprotein (ETF) shows magnetic-field-dependent partitioning of ROS between superoxide and hydrogen peroxide at geomagnetic field strengths, supporting a radical-pair basis for mitochondrial magnetosensing. Field drop 50 µT -> 20 nT gave ~13% less H2O2 and ~10% more superoxide in human ETF

Distribution of magnetic remanence carriers in the human brain

Scientific Reports

Systematic magnetometry of seven whole human brains shows magnetite is reproducibly and preferentially partitioned into the cerebellum and brainstem, providing an anatomical substrate for ferrimagnetic magnetoreception. 822 specimens across 7 brains; cerebellar remanence ~2x cerebral cortex

Extremely low frequency pulsed electromagnetic fields cause antioxidative defense mechanisms in human osteoblasts via induction of •O2- and H2O2

Scientific Reports

ELF pulsed electromagnetic fields induced a controlled ROS burst (superoxide and H2O2) in human osteoblasts that upregulated antioxidant enzymes (SOD2, CAT, GPX3, GSR) and enhanced bone-cell differentiation and mineralization. Repetitive 16 Hz treatment lowered ROS up to 38% and raised mineralization 1.7-fold

Magnetic isotope effect of magnesium in phosphoglycerate kinase phosphorylation

Proceedings of the National Academy of Sciences USA

Enzymatic ATP synthesis by phosphoglycerate kinase runs markedly faster when the catalytic Mg2+ carries the magnetic 25Mg nucleus versus spinless 24Mg, demonstrating spin-selective ion-radical chemistry in ATP production. ATP yield 2.6x higher with 25Mg than 24Mg (km/kn = 2.6)

Magnetic isotope and magnetic field effects on the DNA synthesis

Nucleic Acids Research

DNA synthesis by polymerase β is magnetically controlled: the magnetic 25Mg2+ isotope suppresses catalytic activity relative to nonmagnetic 24Mg2+/26Mg2+, revealing a spin-dependent ion-radical pathway alongside the classical mechanism. 25Mg2+ reduced polymerase-β DNA-synthesis rate 2-3x vs 24Mg2+/26Mg2+

Effect of Simulated Geomagnetic Activity on Myocardial Ischemia/Reperfusion Injury in Rats

Brazilian Journal of Cardiovascular Surgery

Under simulated geomagnetic conditions, magnetic shielding protected the rat heart against ischemia/reperfusion injury (lower troponin I, preserved contractility, higher melatonin) whereas simulated geomagnetic radiation exposure worsened cardiac damage. n=9/group (6 groups); radiation group had significantly lower LVDP and ±dP/dtmax (p<0.01), higher troponin I and lower melatonin vs shielded (p<0.05).

Magnetic storm effect on the circulation of rabbits

Biomedicine & Pharmacotherapy

During real magnetic storms the ultrastructure of Chinchilla rabbit cardiomyocytes was drastically altered and ventricular systolic/mean pressure circadian patterns were disrupted relative to geomagnetically quiet periods — direct in-vivo cardiac damage coinciding with geomagnetic storms. Chinchilla rabbits; systolic and mean pressures monitored in left and right ventricles across quiet vs storm conditions; ultrastructural cardiomyocyte alteration during storms.

Effect of geomagnetic storms on the state of heart mitochondria and their role in providing energy for myocardial contraction

Bulletin of Experimental Biology and Medicine (Biull Eksp Biol Med)

In intact rabbits, geomagnetic storms broke the normal relationship between myocardial mitochondrial size and cardiac contractility, causing mitochondrial swelling and destruction plus a strong positive correlation between mitochondrial size and blood free-fatty-acid level. Intact rabbits; storm-induced mitochondrial swelling/destruction and significant positive correlation between mitochondrial size and blood free fatty acids.

Long-term exposure to a hypomagnetic field attenuates adult hippocampal neurogenesis and cognition

Nature Communications

Near-elimination of the geomagnetic field (hypomagnetic field) significantly impaired adult hippocampal neurogenesis and hippocampus-dependent learning in mice; the deficits tracked reduced ROS and were rescued by restoring ROS or returning mice to the geomagnetic field, demonstrating a causal magnetic-environment mechanism. HMF ~190× weaker than local GMF (0.29±0.01 µT vs 55.26±0.05 µT); BrdU+ cells reduced, two-way ANOVA F(1,23)=24.96, P<0.0001.

Hypomagnetic fields cause anxiety in adult male mice

Bioelectromagnetics

Short-term (72 h) exposure of adult male C57BL/6 mice to a Helmholtz-coil hypomagnetic field induced a significant increase in anxiety-related behaviors, showing rapid behavioral effects of removing the geomagnetic field. Adult male C57BL/6 mice; 72 h HMF exposure; significant increase in anxiety-related behavior vs geomagnetic controls (Bioelectromagnetics 40(1):27-32).

Elimination of the geomagnetic field stimulates the proliferation of mouse neural progenitor and stem cells

Protein & Cell

A magnetic-shielding chamber producing a hypomagnetic field (<200 nT) significantly accelerated proliferation of mouse neural progenitor/stem cells, roughly tripling cell yield after seven days versus geomagnetic-field controls — a direct tissue-level effect of removing Earth's field. ~10.62×10^5 vs 3.56×10^5 cells after 7 days (~3-fold, p<0.0001).

Effects of a hypomagnetic field on DNA methylation during the differentiation of embryonic stem cells

Scientific Reports

A hypomagnetic-field environment impaired embryonic stem-cell differentiation by dysregulating DNA methyltransferase 3b, causing abnormal/incomplete DNA methylation; overexpressing Dnmt3b partially rescued the defect, establishing an epigenetic mechanism for magnetic-environment developmental effects. Dnmt3b mRNA nearly two-fold lower under HMF differentiation vs control; impaired methylation and cell-fate change reversed by Dnmt3b overexpression.

Altered development of Xenopus embryos in a hypogeomagnetic field

Bioelectromagnetics

Exposure of Xenopus laevis embryos to a hypogeomagnetic field (<200 nT) altered early development — reducing horizontal third-cleavage furrows and reorienting the spindle apparatus, causing abnormal morphogenesis — with just a 2 h window between the two- and four-cell stages sufficient to trigger it. Hypogeomagnetic field <200 nT; 2 h exposure at the 2-4 cell stage sufficient to produce cleavage-furrow and spindle-orientation abnormalities.

Influence of hypomagnetic field on the heartbeat in zebrafish embryos

Frontiers in Physiology

Hypomagnetic-field exposure of developing zebrafish embryos significantly increased heartbeat rate, raised heart-rate variability, elevated mortality and produced abnormal phenotypes, and disrupted the circadian heartbeat pattern — a direct cardiac effect of removing the geomagnetic field. Heartbeat rate significantly increased vs geomagnetic controls; increased HRV metrics 96-116 hpf; higher mortality and 5.5-12.5% abnormal phenotypes; circadian heartbeat pattern lost under HMF + constant light.

Delayed consequences of the influence of simulated geomagnetic storms on roach Rutilus rutilus embryos

Journal of Fish Biology

Embryonic exposure to simulated geomagnetic storms produced lasting, measurable morphological consequences in juvenile roach months later — reduced length-mass indices and altered vertebral and seismosensory-system structure — showing durable developmental programming by geomagnetic disturbance. Fish reared 4 months post-exposure; simulated storms decreased length-mass indices in under-yearlings and redistributed vertebral number and seismosensory bone openings (J Fish Biol 95(6):1422-1429).

A simulated geomagnetic storm unsynchronizes with diurnal geomagnetic variation affecting calpain activity in roach and great pond snail

International Journal of Biometeorology

A simulated geomagnetic storm whose main and early-recovery phases fell out of sync with the natural diurnal geomagnetic peak significantly reduced calpain enzyme activity in both roach (Rutilus rutilus) and great pond snail (Lymnaea stagnalis), supporting a mechanism in which storms disrupt geomagnetic-cued biological rhythms. Significant decrease in calpain activity in both species when the simulated storm was mistimed relative to the diurnal geomagnetic peak (Int J Biometeorol 63(2):241-246).

Magnetic field effects on pineal gland melatonin synthesis: comparative studies on albino and pigmented rodents

Brain Research

A single 30-minute Earth-strength magnetic stimulus (a 50° rotation of the geomagnetic horizontal component) markedly inhibited nocturnal pineal melatonin synthesis in albino and hooded rats, demonstrating that geomagnetic-scale field changes directly suppress a key neuroendocrine hormone (visual-input dependent; golden hamsters unaffected). Single 30-min 50° rotation of Earth's horizontal field component markedly inhibited nocturnal pineal melatonin synthesis in albino and hooded rats (visual-input dependent); no effect in golden hamsters. Brain Res 369(1-2):365-8.

Associations between solar and geomagnetic activity and peripheral white blood cells in the Normative Aging Study

Environmental Research

In a large longitudinal human cohort, higher solar and geomagnetic activity was significantly associated with reduced total white blood cell, neutrophil and basophil counts, consistent with modest immune suppression. 728 subjects, 2,048 visits (2000-2013); neutrophils -262.88 cells/mm3 per IQR increase in interplanetary magnetic field (95% CI -497.56 to -16.92, p=0.028); basophils -17.50 cells/mm3 (95% CI -25.06 to -9.95, p<0.001)

The role of solar and geomagnetic activity in endothelial activation and inflammation in the NAS cohort

PLOS ONE

Increased solar/geomagnetic activity was significantly associated with elevated circulating markers of endothelial activation and systemic inflammation (sICAM-1, sVCAM-1, CRP) in a large human cohort, indicating upregulated inflammatory signaling. 742 participants, 2,273 observations (2000-2017); per-IQR increase in interplanetary magnetic field: +10.1% sICAM-1 (95% CI 8.34-11.9) and +15.3% sVCAM-1 (95% CI 12.7-17.8); per-IQR sunspot number: +1.34% CRP (95% CI 0.49-2.19)

Dynamics of serum C-reactive protein (CRP) level and cosmophysical activity

European Journal of Internal Medicine

Serum C-reactive protein, a systemic inflammation marker, correlated significantly and positively with daily geomagnetic activity (and inversely with cosmic-ray neutron activity) across a very large clinical dataset. 25,399 CRP tests over 3 years; daily CRP vs geomagnetic activity r=0.97, p=0.02 (n=1,057); daily CRP vs neutron activity r=-0.97, p=0.025; days with low CRP had higher neutron activity (p<0.0001)

Relationship between immunoglobulin levels and extremes of solar activity

International Journal of Biometeorology

Serum immunoglobulin levels (IgA, IgG, IgM) fell as the solar cycle approached maximum compared with solar minimum, with a statistically significant drop for IgM, indicating solar-cycle modulation of humoral immunity. Comparison across solar maximum (July 1989) vs minimum (Sept 1986); IgM significantly reduced in the 5-month window (p=0.04); strong trend for IgG (p=0.07)

Geomagnetic activity affects animal myocardial ischemia/reperfusion injury: an experimental-simulated study

International Journal of Biometeorology

In a controlled simulated-field experiment, severe geomagnetic activity significantly increased pro-inflammatory cytokines and upregulated the TLR4/NF-kB inflammatory pathway, providing experimental evidence that geomagnetic activity modulates the inflammatory response. Rat myocardial ischemia/reperfusion model; severe geomagnetic activity significantly increased serum IL-1 and IL-6 (p<0.01) and raised TLR4, TRAF6, NF-kB and TNF-alpha expression

Heliogeophysical Conditions in Moscow during the Covid-19 Pandemic

Izvestiya, Atmospheric and Oceanic Physics

Outbreaks in COVID-19 infections and deaths in Moscow correlated significantly with multi-month declines in geomagnetic activity, consistent with a proposed weakening of immune defense under low geomagnetic field conditions. 2020-2022 pandemic data; multiple geomagnetic-disturbance periods showed statistically significant increases in infections/deaths (T-values 2.01-2.83, exceeding the 1.96 threshold for p<0.05)

Geographically selective assortment of cycles in pandemics: meta-analysis of data collected by Chizhevsky

Epidemiology and Infection

Meta-analysis of long historical epidemic records confirmed statistically significant multi-year cycles in infectious-disease mortality matching solar-activity periodicities, supporting Chizhevsky's solar-epidemic link. Cholera in India 1901-1961: ~11.7-year cycle (95% CI 10.44-12.90 yr) matching the ~11-year solar cycle, ANOVA p=0.024; cholera in Russia 1823-1926: ~20.7-year (Hale) cycle p<0.001

Relation of pandemics with solar cycles through ozone, cloud seeds, and vitamin D

Environmental Science and Pollution Research International

The majority of documented pandemics over ~two centuries coincided with solar-cycle extrema, and the authors propose a solar-activity to UV-B to vitamin-D to immunosuppression pathway amplifying pandemic severity. 27 of 34 pandemic outbreaks (1825-2020) coincided with sunspot maxima or minima; probability by chance 0.16% (odds ratio approx 3.9)

Revealing the relationship between solar activity and COVID-19 and forecasting of possible future viruses using multi-step autoregression (MSAR)

Environmental Science and Pollution Research International

Historical viral pandemics, including COVID-19, cluster at relative extrema of the sunspot cycle, supporting a solar-activity influence on the emergence of viral pandemics. 27 of 36 pandemic incidences (1750-2020) fell on sunspot extrema; prior influenza-sunspot coincidence estimated at <2% probability of chance

Mechanisms of Geomagnetic Field Influence on Gene Expression Using Influenza as a Model System: Basics of Physical Epidemiology

International Journal of Environmental Research and Public Health

Proposes a supported biophysical mechanism whereby geomagnetic-field fluctuations act via cryptochrome and the CLOCK/BMAL1-NF-kB axis to modulate immune gene expression and influenza virus replication, linking solar-cycle timing to influenza epidemics. Mechanistic model tying influenza pandemic timing to the ~11-year solar cycle; cites magnetic-field-associated significant fall in total lymphocytes

Schumann Resonances, a plausible biophysical mechanism for the human health effects of Solar/Geomagnetic Activity

Natural Hazards

Seminal paper proposing that solar/geomagnetic activity alters the Schumann Resonance signal, suppressing melatonin and thereby degrading immune defense (T-lymphocytes, NK cells, IL-2/IL-6), providing a mechanistic bridge to immune and disease effects in populations. Natural Hazards 26(3):279-331; synthesizes evidence that melatonin suppression via geomagnetic activity impairs immune, cardiovascular and nervous systems at the population scale

The Possible Effect of Space Weather Factors on Various Physiological Systems of the Human Organism

Atmosphere

Systematic 25-year review of heliobiology concluding that space-weather factors (solar/geomagnetic activity) exert measurable effects across human physiological systems, including immune parameters, scaling with the timescale and organizational level examined. Systematic review organizing studies by timescale (years to minutes), biological level (population to body system), and response degree (norm to death), documenting immune and blood-count effects

Dynamics of serum C-reactive protein (CRP) level and cosmophysical activity

European Journal of Internal Medicine

Daily serum C-reactive protein levels were significantly correlated with geomagnetic activity and inversely related to cosmic-ray neutron activity, linking inflammation to space-weather fluctuations. 25,399 CRP tests over 3 years; CRP vs geomagnetic activity r=0.97, p=0.02; CRP vs neutron activity r=-0.97, p=0.025.

The sun-earth-health connection: a short review of potential mechanisms and implications

International Journal of Biometeorology

Peer-reviewed review concluding that geomagnetic disturbances are reproducibly associated with endothelial activation and systemic inflammation, proposing melatonin suppression and cryptochrome magnetoreception as immune-relevant mechanisms. Synthesis review; identifies geomagnetic disturbance as a novel environmental risk factor for vulnerable patients via inflammatory and autonomic pathways.

Reactivation of latent human intracellular infections during a months-long expedition at the Antarctic Vostok station

Scientific Reports

During Antarctic winter-over, increases in latent-virus (EBV, HHV-6) DNA and antibody titers followed prolonged periods of elevated geomagnetic activity, alongside decreased neutrophils/basophils and suppressed lymphocyte activity. 11 winterers; 100% showed EBV DNA change, 80% (9/11) shed HHV-6; viral DNA rises noted immediately after a prolonged high-geomagnetic-activity period.

Do solar cycles influence giant cell arteritis and rheumatoid arthritis incidence?

BMJ Open

Incidence of the autoimmune diseases giant cell arteritis and rheumatoid arthritis varied significantly with the solar/geomagnetic cycle, peaking at characteristic lags after geomagnetic (auroral electrojet) extrema. GCA data 1950-2004, RA 1955-2007; GCA vs AL index r=-0.53 (p<0.01), RA r=0.49 (p<0.01); shared ~10-year periodicity.

Changes in autoimmune markers of the anti-cardiolipin syndrome on days of extreme geomagnetic activity

Journal of Basic and Clinical Physiology and Pharmacology

Autoimmune antiphospholipid-syndrome markers changed significantly on days of extreme geomagnetic storms versus quiet days, indicating a space-weather link to autoimmune serology. Anti-beta2-glycoprotein-1 IgA significantly elevated on severe geomagnetic-storm days (p=0.0001); kaolin clotting time changed (p=0.019).

Systemic lupus erythematosus and geomagnetic disturbances: a time series analysis

Environmental Health

In a long-running lupus cohort, systemic lupus erythematosus disease-activity (Physician Global Assessment) showed statistically significant long-term associations with solar and geomagnetic indices (sunspot number, AP, F10.7). 327 observations (1996-2020); 297-day correlations sunspot r=-16.7%, AP r=-16.5%, F10.7 r=-17.2% (all p<0.01, Bonferroni-corrected); seasonality R2=38.7%.

Geomagnetic disturbances may be environmental risk factor for multiple sclerosis: an ecological study of 111 locations in 24 countries

BMC Neurology

Proximity to geomagnetic (rather than geographic) latitude best predicted multiple sclerosis prevalence worldwide, implicating geomagnetic disturbances as an environmental driver of this autoimmune disease. 111 MS-prevalence points across 24 countries; geomagnetic distance measure explained 56% of MS variance (R=0.75, adj-R2=0.56) vs 17% for geographic latitude.

Correlation of multiple sclerosis (MS) incidence trends with solar and geomagnetic indices: time to revise the method of reporting MS epidemiological data

Iranian Journal of Neurology

Multiple sclerosis incidence trends in two independent populations correlated strongly with solar wind velocity and geomagnetic (AP) disturbance indices at consistent multi-year lags. Western Greece: solar wind velocity r=0.906 (p<0.001), AP index r=0.844 (p=0.001) at 1-year lag; Tehran: AP r=0.864 (p=0.001) at 2-year lag.

Geomagnetic disturbances are associated with reduced nocturnal excretion of a melatonin metabolite in humans

Neuroscience Letters 1999;266(3):209-212. DOI: 10.1016/s0304-3940(99)00308-0. PMID: 10465710

In a human cohort, mean overnight urinary excretion of the melatonin metabolite 6-OHMS was significantly lower on days when geomagnetic activity was elevated, with the effect amplified when disturbances coincided with 60 Hz field exposure or reduced ambient light. n=132 electric utility workers; reduced 6-OHMS excretion on days with geomagnetic indices >30 nT

Geomagnetic activity and human melatonin metabolite excretion

Neuroscience Letters 2008;438(1):76-79. DOI: 10.1016/j.neulet.2008.04.031. PMID: 18472329

Elevated geomagnetic activity was associated with lower adjusted mean nocturnal 6-OHMS concentrations and reduced total overnight melatonin-metabolite excretion, with the strongest predictive window 15-33 h before sampling, suggesting geomagnetic activity helps entrain human melatonin rhythms. n=153 male electric utility workers; NIH-funded (R01ES08117)

Geomagnetic activity influences the melatonin secretion at latitude 70 degrees N

Biomedicine & Pharmacotherapy 2001;55(Suppl 1):57s-62s. DOI: 10.1016/s0753-3322(01)90006-x. PMID: 11774869

In healthy subjects at high latitude (Alta, Norway, 70N), sufficiently large changes in geomagnetic activity significantly decreased salivary melatonin concentration and modulated the circadian amplitude of melatonin. n=25 healthy subjects; geomagnetic changes >80 nT/3h significantly decreased salivary melatonin

Seasonal pattern of melatonin excretion in humans: relationship to daylength variation rate and geomagnetic field fluctuations

Experientia 1996;52(3):253-258. DOI: 10.1007/BF01920718. PMID: 8631397

Across a full year, human night-time urinary melatonin (6-sulphatoxymelatonin) excretion peaked when the vertical component of the geomagnetic field was low and troughed when it was high, indicating geomagnetic field fluctuations interact with daylength to modulate melatonin secretion. n=16 healthy volunteers sampled monthly for 1 year; melatonin peaks/troughs tracked the vertical geomagnetic component

Intense solar activity reduces urinary 6-sulfatoxymelatonin in patients with COPD

Respiratory Research 2023;24:91. DOI: 10.1186/s12931-023-02390-w. PMCID: PMC10037776. PMID: 36959654

Higher solar/coronal-mass-ejection activity in the two days before urine collection was associated with a significant reduction in urinary 6-sulfatoxymelatonin (aMT6s), directly linking space-weather intensity to suppressed human melatonin output. n=140 patients / 440 urine samples; IQR increase in ln CME-speed → 9.3% aMT6s reduction (95%CI -17.1% to -0.8%); 24.5% reduction in diabetics (interaction p=0.006)

The first experience in application of melatonin (melaxen) for prophylaxis of the effects of magnetic storms on patients with cardiovascular pathology

Klinicheskaia Meditsina (Moskva) 2007;85(8):33-36. PMID: 17926487

In cardiovascular patients, prophylactic melatonin (melaxen) given around predicted geomagnetic storms substantiated the use of melatonin as a protective measure against the adverse effects of magnetic storms, implicating melatonin as the mediating pathway. Three groups (standard therapy vs +vitamin E vs +melatonin); supplementation from 3 days before to 3 days after each storm

Are stress responses to geomagnetic storms mediated by the cryptochrome compass system?

Proceedings of the Royal Society B: Biological Sciences 2012;279(1736):2081-2090. DOI: 10.1098/rspb.2012.0324. PMCID: PMC3321722

Proposes a mechanistic pathway in which geomagnetic storms act through the cryptochrome magnetoreceptor to disorient hormonal systems, citing lower mean nocturnal melatonin secretion during storms as evidence linking space weather to neuroendocrine and circadian disruption. Published in Proc. R. Soc. B; integrates cryptochrome (dual magnetic-compass/circadian-oscillator) role with reduced nocturnal melatonin

Static and extremely low frequency electromagnetic field exposure: reported effects on the circadian production of melatonin

Journal of Cellular Biochemistry 1993;51(4):394-403. DOI: 10.1002/jcb.2400510403. PMID: 8098713

Review concluding that static magnetic fields in the geomagnetic range (0.2-0.7 Gauss) repeatedly perturb the circadian melatonin rhythm, depressing pineal cyclic AMP, N-acetyltransferase activity, and melatonin concentrations. Field strengths in the geomagnetic range (20-70 microTesla); multiple disrupted pineal melatonin-synthesis parameters

Influence of electromagnetic fields on the circadian rhythm: Implications for human health and disease

Biomedical Journal 2023;46(1):48-59. DOI: 10.1016/j.bj.2023.01.003. PMCID: PMC10105029. PMID: 36681118

Review presenting the geomagnetic field and Schumann resonances as natural circadian timing signals and stating that solar storms reduce melatonin levels by affecting enzymes required for its biosynthesis in the pineal gland and retina, disrupting circadian rhythms. Documents solar/geomagnetic disruption of melatonin plus an associated 5% increase in cardiovascular mortality during high solar activity

Modulation of Sleep Architecture by Whole-Body Static Magnetic Exposure: A Study Based on EEG-Based Automatic Sleep Staging

International Journal of Environmental Research and Public Health 2022;19(2):741. DOI: 10.3390/ijerph19020741. PMCID: PMC8775472

Controlled single-blind EEG experiment showing that whole-body static magnetic field exposure (fields spanning the geomagnetic range) measurably restructured human sleep: it increased deep sleep (N3) and reduced light sleep (N2) and sleep onset latency versus sham. n=41 (21 real, 20 sham); N3 +8.43%, N2 -3.51%, sleep-onset latency -15.83% vs sham

Influence of the earth's magnetic field on resting and activated EEG mapping in normal subjects

International Journal of Neuroscience 1993;73(3-4):195-201. DOI: 10.3109/00207459308986669. PMID: 8169054

Found statistically significant differences in the EEG of normal subjects depending on N-S versus E-W orientation to the earth's magnetic field (most pronounced in alpha power), consistent with reported shortening of REM latency in the E-W sleeping position, evidencing geomagnetic-field influence on sleep EEG. Statistically significant N-S vs E-W EEG differences, especially in alpha-power; linked to altered REM latency by sleeping direction

The sun-earth-health connection: a short review of potential mechanisms and implications

International Journal of Biometeorology 2026;70(2):61. DOI: 10.1007/s00484-026-03134-3. PMID: 41689632

Recent review linking solar flares, coronal mass ejections, and geomagnetic storms to circadian disruption, identifying melatonin suppression (alongside cryptochrome magnetoreception and voltage-gated calcium-channel modulation) as a core proposed mechanism connecting space weather to human physiology. Int J Biometeorol 2026;70:61; names melatonin suppression + circadian disruption among the primary space-weather mechanisms

Detrimental impact of solar and geomagnetic activity on plasma B-complex vitamins in the VA Normative Aging Study cohort

Scientific Reports

In a large human cohort, rising solar activity (interplanetary magnetic field and sunspot number) was significantly associated with falling plasma vitamin B12 and folate, the first demonstration of a detrimental solar-activity effect on circulating B-complex vitamins. IMF (20-day avg): B12 -94.8 pg/ml per IQR (95% CI -135.9 to -53.7; p=7.2E-06); SSN: B12 -71.8 pg/ml (95% CI -103.4 to -40.1; p=1.0E-05)

Annual space weather fluctuations and telomere length dynamics in a longitudinal cohort of older men: the Normative Aging Study

Journal of Exposure Science & Environmental Epidemiology

Higher galactic cosmic-ray-induced ionization was significantly associated with shorter leukocyte telomere length, a blood-derived marker of cellular aging, corresponding to roughly 15 years of accelerated aging. Cosmic-ray ionization: -17.64% leukocyte telomere length per IQR (95% CI -27.73% to -7.55%)

Relationship between immunoglobulin levels and extremes of solar activity

International Journal of Biometeorology

Serum immunoglobulins IgA, IgG, and IgM all declined toward the solar-cycle maximum compared with solar minimum, indicating solar activity modulates humoral immune blood markers. 5-month window: IgM decrease significant (p=0.04); IgG strong trend (p=0.07)

Blood troponin levels in acute cardiac events depends on space weather activity components (a correlative study)

Journal of Basic and Clinical Physiology and Pharmacology

Blood troponin levels (a serum marker of myocardial damage) in acute cardiac events correlated significantly with space-weather parameters, including solar activity, cosmic-ray (neutron) activity, and geomagnetic indices. Troponin T vs geomagnetic Ap: r=0.77 (p=0.0021); Troponin I linked to solar activity and cosmic-ray (neutron) activity

Transduction of the Geomagnetic Field as Evidenced from alpha-Band Activity in the Human Brain

eNeuro

Ecologically-relevant rotations of Earth-strength magnetic fields produced a strong, specific, repeatable drop in EEG alpha-band (8–13 Hz) power in the human brain, demonstrating an active geomagnetic sensory system in human neurophysiology. Alpha power dropped ~50% from baseline in responsive subjects; declination effect one-way ANOVA p < 0.00003, ηp² = 0.34; inclination interaction p < 0.05, ηp² = 0.17 (n = 26–29).

Associations between solar and geomagnetic activity and cognitive function in the Normative Aging Study

Environment International

In a large longitudinal cohort of older men, higher same-day sunspot number and geomagnetic (Kp) activity were significantly associated with increased odds of poor global cognitive performance (low MMSE). Per IQR increase, same-day Kp associated with +19% odds of low MMSE (95% CI 4–36%) and sunspot number +17% (95% CI 3–34%); 28-day averages stronger (+30% Kp, +23% SSN). n = 1,081 men, 3,248 cognitive visits.

Geomagnetic activity and the severity of the migraine attack

Headache

In migraine patients, headache severity was linearly correlated with the level of geomagnetic activity, with a markedly higher proportion of severe attacks occurring on geomagnetically stormy days than on quiet days. Severe headaches rose from 25.9% on quiet geomagnetic days to 43.75% on stormy days; 486 attacks recorded over 14 months in 30 migraine patients.

Effects of geomagnetic activity variations on the physiological and psychological state of functionally healthy humans: Some results of Azerbaijani studies

Advances in Space Research

EEG recordings in healthy adults showed that severe geomagnetic storms negatively affect the functional state of the human brain, producing measurable disorganization of cortical bioelectrical activity (alpha and theta changes) during disturbed days. Severe geomagnetic storms significantly altered EEG alpha (8–13 Hz) and theta (4–7 Hz) activity and increased indisposition/headache reports; weak/moderate storms had a stimulating effect while strong storms activated inhibitory (braking) processes.

Experimental simulation of the effects of sudden increases in geomagnetic activity upon quantitative measures of human brain activity: Validation of correlational studies

Neuroscience Letters

Experimentally applied fields simulating geomagnetic activity produced repeatable, region-specific changes in quantitative EEG power over the right parietal cortex, validating prior correlational links between geomagnetic activity and human brain electrical activity. After ~10 min exposure, right-parietal theta power was enhanced under 20 nT but suppressed under 70 nT (7 Hz amplitude-modulated fields) relative to sham exposure.

Greater electroencephalographic coherence between left and right temporal lobe structures during increased geomagnetic activity

Neuroscience Letters

Human EEG showed significantly greater coherence between the left and right temporal-lobe structures during periods of increased geomagnetic activity, indicating geomagnetic modulation of interhemispheric brain coupling. Increased temporal-lobe interhemispheric EEG coherence coincided with elevated geomagnetic activity (Neuroscience Letters 560:126–130).

Assessment of the Effects of Geomagnetic and Solar Activity on Bioelectrical Processes in the Human Brain Using a Structural Function

Neuroscience and Behavioral Physiology

At high latitudes, sharp variations in geomagnetic and solar activity produced significant perturbing and modulating effects on multichannel EEG structural-function parameters, reflecting a measurable whole-brain response to heliogeophysical disturbance. Daily EEG in 10 healthy men (aged 19–37) over 25 days spanning C/M-class flares and G2–G3 storms; geomagnetic variation was reflected chiefly in changes of the EEG correlation radius.

The Effect of Environmental Factors on the Cognitive Functions of Cadets at a Military Institute

Izvestiya, Atmospheric and Oceanic Physics

In healthy young cadets, intensified solar activity and significant increases in geomagnetic activity produced deactivation of the cerebral cortex accompanied by slowed reaction time to external signals and impaired stimulus recognition. 81 first-year cadets tested across autumn–winter and spring; strong geomagnetic/solar increases slowed response time, impaired stimulus recognition and reduced stress resistance, whereas weak/moderate perturbations activated the cortex.

Functional State of the Brain of Elderly Women at Rest and in Mental Stress under Varying Geomagnetic Conditions

Human Physiology

EEG in elderly women demonstrated that varying geomagnetic conditions altered the functional state of the brain both at rest and during mental stress, disturbing the balance of cortical synchronization/desynchronization mechanisms. Geomagnetic variation shifted EEG synchronization/desynchronization balance in elderly women at rest and under cognitive load (Human Physiology 46(4):408–416).

Magnetic sense-dependent probabilistic decision-making in humans

Frontiers in Neuroscience

Cancelling the ambient geomagnetic field significantly and reproducibly shifted human probabilistic binary choices, providing behavioral evidence that a subconscious human magnetic sense influences decision-making. Field cancellation changed choice rate by ~10.3% per step (p < 0.025, percentile bootstrap); n = 55 men + 53 women; effect modulated by fasting/blood-glucose (~5.1 mmol/L).

Experimental simulation of the effects of increased geomagnetic activity upon nocturnal seizures in epileptic rats

Neuroscience Letters

Both experimentally simulated geomagnetic activity and increased natural (ambient) geomagnetic activity significantly and additively increased the proportion of nightly seizures in epileptic rats. Synthetic and natural geomagnetic activity each significantly raised nightly seizure proportion (P < 0.05), each accounting for ~6–8% of variance; effects additive. Regional natural range ~10–70 nT.

Enhancement of limbic seizures by nocturnal application of experimental magnetic fields that simulate the magnitude and morphology of increases in geomagnetic activity

International Journal of Neuroscience

Nocturnal application of experimental magnetic fields mimicking the magnitude and morphology of geomagnetic-activity increases significantly enhanced overt limbic seizures in chronically epileptic rats. Overt seizures increased 3.1-fold vs controls when fields were active for one or two successive nights; experimental field plus ambient geomagnetic activity (>40 nT) explained ~12–15% of daily seizure-incidence variance.

Geophysical variables and behavior: LXXIX. Overt limbic seizures are associated with concurrent and premidscotophase geomagnetic activity: synchronization by prenocturnal feeding

Perceptual and Motor Skills

Overt limbic seizures in epileptic rats were significantly associated with concurrent (and pre-midscotophase) natural geomagnetic activity, consistent with geomagnetic suppression of melatonin's anticonvulsant effect. Geomagnetic activity explained ~35% of the variance in seizure occurrence (multiple correlation R = 0.59) across 65 daily observation periods in 35 chronically epileptic rats.

Sudden death in epileptic rats exposed to nocturnal magnetic fields that simulate the shape and intensity of sudden changes in geomagnetic activity: an experiment in response to Schnabel, Beblo and May

International Journal of Biometeorology

Epileptic rats exposed to nocturnal magnetic fields simulating sudden geomagnetic-storm changes died at a dramatically higher rate than sham-exposed rats, offering an experimental model for sudden unexpected death in epilepsy linked to geomagnetic disturbance. 60% mortality within 24 h in field-exposed rats vs 10% in sham-exposed (P < 0.001) — a six-fold increase.

Geomagnetic storms: association with incidence of depression as measured by hospital admission

British Journal of Psychiatry, 164(3), 403-409

Geomagnetic storms were followed by a significant surge in depression-related psychiatric hospital admissions in men, supporting a geomagnetic trigger for depressive illness in predisposed individuals. 36.2% increase in male hospital admissions for depressed-phase manic-depressive illness in the second week following geomagnetic storms vs geomagnetically quiet control periods.

Do ambient electromagnetic fields affect behaviour? A demonstration of the relationship between geomagnetic storm activity and suicide

Bioelectromagnetics, 27(2), 151-155

In a 35-year national suicide dataset, suicide among women rose significantly during periods of concurrent geomagnetic storm activity, indicating ambient electromagnetic-field perturbations affect behaviour in a clinically meaningful way. 68,172 Australian suicides (1968-2002); female suicide increased significantly in autumn during geomagnetic storm activity (P = 0.01).

The effect of geomagnetic storms on suicide

South African Psychiatry Review, 6, 24-27

Across a 13-year South African record, monthly suicide totals were strongly and significantly correlated with geomagnetic storm activity for the population overall and for both sexes. 1980-1992; total suicides vs storm activity r = 0.6964 (p < 0.01); males r = 0.6301 (p < 0.025); females r = 0.7544 (p < 0.005).

Association of geomagnetic disturbances and suicides in Japan, 1999-2010

Environmental Health and Preventive Medicine, 19(1), 64-71

In a nationwide 12-year Japanese dataset, higher monthly geomagnetic disturbance was significantly associated with a greater number of male suicides, generating the hypothesis that geomagnetic disturbances trigger male suicide. 262,596 male + 102,539 female suicides; monthly mean K-index coefficient for males = 11.4 (SE 3.5, p = 0.001).

Association of geomagnetic disturbances and suicide attempts in Taiwan, 1997-2013: a cross-sectional study

International Journal of Environmental Research and Public Health, 17(4), 1154

Over 17 years, the monthly geomagnetic Kp index was significantly and independently associated with the number of both male and female suicide attempts in Taiwan, replicating and extending the earlier Japanese finding. 204 months; Kp10-index coefficient 2.44 for male (p < 0.0001) and 3.23 for female (p < 0.0001) suicide attempts, adjusting for temperature, humidity, unemployment and cosmic rays.

Suicides and mortality from cardiovascular diseases due to space-weather factors in high latitudes

Izvestiya, Atmospheric and Oceanic Physics, 56(8), 799-810

In a 63-year high-latitude Russian record, seasonal peaks in suicide coincided with peaks in the most intense geomagnetic storms and with the 11-year solar cycle, with wavelet coherence showing a close link between suicide rates and space-weather factors. 908 suicides in Kirovsk (67.6 N), 1948-2010; seasonal suicide maxima in March-May (P < 0.001), July (P = 0.006), and October (P < 0.001) coinciding with the most intense (Ap > 150 nT) magnetic storms.

Solar insolation in springtime influences age of onset of bipolar I disorder

Acta Psychiatrica Scandinavica, 136(6), 571-582

In a large international multisite cohort, a larger maximum monthly increase in springtime solar insolation at the onset location was significantly associated with a younger age of onset of bipolar I disorder. 5,536 patients across 50 sites in 32 countries (onset at 456 locations in 57 countries); significant inverse insolation-onset association at P < 0.001.

Variations in seasonal solar insolation are associated with a history of suicide attempts in bipolar I disorder

International Journal of Bipolar Disorders, 9(1), 26

In the largest international bipolar cohort to date, a larger seasonal swing in solar insolation (bigger winter-to-summer difference) was significantly associated with a lifetime history of suicide attempts. 4,876 bipolar I patients (1,496 with suicide-attempt history, 30.7%); odds of suicide attempt fell ~4.8% per 0.1 increase in winter/summer insolation ratio (Exp(beta) = 0.482), all coefficients p < 0.001.

Association between polarity of first episode and solar insolation in bipolar I disorder

Journal of Psychosomatic Research, 160, 110982

Greater annual variation in solar insolation at the onset location was significantly associated with a higher likelihood that the first bipolar I episode had a depressive (rather than manic) polarity. 7,488 bipolar I patients across 75 sites in 42 countries (onset at 591 locations in 67 countries); odds of depressive first episode fell 6.7% per 0.1 increase in min/max insolation ratio, p <= 0.001.

Maximum temperature and solar radiation as predictors of bipolar patient admission in an emergency psychiatric ward

International Journal of Environmental Research and Public Health, 16(7), 1140

Among consecutive emergency psychiatric admissions, higher solar radiation independently predicted admission for a primary bipolar disorder diagnosis, implicating solar exposure in acute affective decompensation. 730 patients (251 bipolar); solar radiation OR = 1.146 per 100 W (p = 0.025) and maximum temperature OR = 1.162 (p = 0.030) in logistic regression.

Affective disorders and solar activity

Actas Espanolas de Psiquiatria, 33(1), 7-12

Psychiatric admissions for affective disorders tracked the solar cycle: manic admissions rose with higher solar activity, demonstrating a significant solar-activity signal in mood-disorder hospitalization. Manic disorders positively correlated with solar activity (Pearson r = +0.334); depressive admissions inversely correlated (r = -0.72).

Solar activity at birth predicted infant survival and women's fertility in historical Norway

Proceedings of the Royal Society B: Biological Sciences, 282(1801):20142032

Higher solar activity (total solar irradiance) in the birth year significantly reduced survival to adulthood and lifetime reproductive success, with a proposed UV-driven folate-degradation mechanism. N=8,662 births (1676–1878); individuals born in solar-maximum years lived on average 5.2 years shorter than those born in solar-minimum years; fertility/LRS reduced in low-status women (p<0.05)

Association between gestational exposure to solar activity and pregnancy loss using live births from a Massachusetts-based medical center

Environmental Research, 242:117742

Higher sunspot activity during the first 24 gestational weeks was significantly associated with an increased number of pregnancy losses in a large modern obstetric cohort. 71,963 singleton live births (conceived 2002–2016); an IQR increase in sunspot number (78.8) was associated with ~13.3 additional pregnancy losses per ~92 weekly conceptions (95% CI 6.5–20.1)

Associations of solar activity and related exposures with fetal growth

Science of the Total Environment, 892:163862

Solar and geomagnetic activity were significantly associated with altered ultrasound-measured fetal growth (larger early-gestation head parameters and smaller later-gestation parameters), indicating a measurable space-weather effect on fetal development. 9,573 pregnancies (26,879 ultrasounds, 2011–2016); IQR increase in sunspot number (32.87) associated with head circumference −0.25 z-score (95% CI −0.36 to −0.15), biparietal diameter −0.17 (−0.26 to −0.08), femur length −0.13 (−0.23 to −0.03) at growth scans

Detrimental impact of solar and geomagnetic activity on plasma B-complex vitamins in the VA Normative Aging Study cohort

Scientific Reports, 14:24065

Increased solar and geomagnetic activity significantly lowered circulating folate and B12, providing direct human-cohort evidence for the folate/B-vitamin depletion mechanism proposed to underlie adverse birth and developmental outcomes. 910 participants / 3,019 visits (1998–2017); IQR rise in sunspot number lowered B12 by −71.8 pg/ml (95% CI −103.4 to −40.1; p=1.0E−05); IMF rise lowered B12 by −94.8 pg/ml (p=7.2E−06); folate −2.7 ng/ml (p=0.029)

Solar cycle predicts folate-sensitive neonatal genotypes at discrete phases of the first trimester of pregnancy: a novel folate-related human embryo loss hypothesis

Medical Hypotheses, 79(2):210–215

Sunspot activity during specific first-trimester windows significantly predicted the surviving distribution of folate-sensitive neonatal genotypes (MTHFR/MTRR), consistent with UV-driven, folate-mediated selective embryo loss. 379 neonates (lat 54°N, 1998–2000); sunspot activity predicted C677T-MTHFR for gestational days 31–60 (p=0.018) and A66G-MTRR for days 61–90 (p=0.0072)

Chromosome aberration and environmental physical activity: Down syndrome and solar and cosmic ray activity, Israel, 1990–2000

International Journal of Biometeorology, 50(1):1–5

The annual number of detected Down syndrome cases was significantly inversely correlated with solar activity indices (rising as solar activity fell and cosmic-ray flux rose), implicating cosmophysical factors in chromosome-aberration pathogenesis. Sunspot number: r=−0.78, P=0.008; solar radio flux: r=−0.76, P=0.01

An eleven-year cycle in human births

International Journal of Biometeorology, 35(1):33–38

Human birth (imputed conception) rates showed a reliable ~11-year periodicity directly related to the sunspot cycle across two national datasets. US and New Zealand birth data 1909–1985; periodogram/periodic-regression confirmed a significant ~11-year period matching the sunspot cycle

The 11-year cycle in human births

International Journal of Biometeorology, 37(2):72–77

An ~11-year rhythm in human births across seven regions correlated significantly with sunspots, solar flares, and geomagnetic (K-index) disturbances, extending the solar-cycle-in-births finding internationally. 7 regions (Australia, Germany, England & Wales, New Zealand, Japan, Switzerland, USA), 55 annual values 1930–1984 (~5 sunspot cycles); correlations with sunspots, solar flares, and magnetic indices

Correlation of human longevity oscillations with sunspot cycles

Radiation Research, 133(3):312–320

Mean longevity of birth cohorts oscillated in phase with the sunspot cycle, with cohorts born at solar minima living longer than those born at solar maxima, replicated across three independent populations. Birth cohorts 1740–1900 (US Congressmen, UK House of Commons, Cambridge alumni); cohort longevity 2–3 years greater during low vs peak sunspot activity

Time series analysis supporting the hypothesis that enhanced cosmic radiation during germ cell formation can increase breast cancer mortality in germ cell cohorts

International Journal of Biometeorology, 40(4):206–222

Breast-cancer-mortality birth-cohort oscillations were phase-locked to cosmic-ray variation ~25 years before birth (the time of maternal germ-cell formation), supporting a prenatal radiation priming effect on later disease. Female breast cancer mortality 1940–1990 vs Greenland 10Be cosmic-ray proxy; phase-lock ~25 years pre-birth; authors estimate a large fraction of risk associated with germ-cell radiation priming

Correlation of a 140-year global time signature in cancer mortality birth cohorts with galactic cosmic ray variation

International Journal of Astrobiology, 6(4):307–319

A consistent ~140-year (two-peak) global cancer-mortality birth-cohort signature across five countries correlated with background galactic cosmic-ray variation one generation before birth, indicating a global cosmophysical developmental effect. US, UK, Australia, Canada, New Zealand; peaks ~75 years apart in both sexes; cohort effects track cosmic radiation of the preceding generation

A 17-year oscillation in cancer mortality birth cohorts on three continents – synchrony to cosmic ray modulations one generation earlier

International Journal of Biometeorology, 53(6):487–499

A ~17-year oscillation appeared in all breast/total cancer-mortality birth-cohort series across three continents and was synchronized to cosmic-ray modulation one generation earlier, reinforcing a cross-generational space-radiation effect on development. US, UK, Australian cohorts spanning ~180 years (1820–2000); consistent ~17-year cycle across countries and both sexes

The light of life: evidence that the sun modulates human lifespan

Medical Hypotheses, 70(3):501–507

Using state vital statistics, individuals born during the 3-year peaks of 11-year solar cycles lived significantly shorter lives than those born in non-peak years, with males more affected, attributed to UV effects on the developing genome. 320,247 Maine citizens over 29 years; peak-cycle births lived on average 1.5 years less (CL 1.3–1.7)

Peaks of solar cycles affect the gender ratio

Medical Hypotheses, 71(6):829–838

Birth timing within solar-cycle peaks was linked to sex-differential mortality and a shift in the gender ratio from birth to death, with peak-conceived males showing greater disease burden and shorter lifespan. Maine vital statistics; ~2% decrease in gender ratio from birth to death and ~7-year shorter male lifespan associated with solar-peak birth; males showed ~28% more disease than females

The effect of solar cycles on human lifespan in the 50 United States: variation in light affects the human genome

Medical Hypotheses, 75(1):17–25

Extending the Maine analysis nationwide, people conceived/born during solar-cycle peaks lived significantly shorter lives, and the effect was amplified in high-elevation (higher-UV) states, supporting a UV-mediated genomic mechanism. All 50 US states + DC; peak-born lived ~1.7 years less than non-peak-born; the six highest-elevation states widened the MAX–MIN gap by ~13% (~3 additional months shorter)

Sunspot data and human longevity

Data in Brief, 21:1579–1590

Across a very large national mortality dataset, higher sunspot number at birth was highly significantly associated with shorter lifespan for both sexes, corroborating the solar-activity-at-birth longevity effect at population scale. 63,754,830 deaths (1979–2013); births at SSN≥90 vs <90 died ~16.5 years earlier (males 54.0 vs 70.6; females 60.7 vs 77.4 years); all p<0.0001

Solar energy at birth and human lifespan

Journal of Photochemistry and Photobiology B: Biology, 186:59–68

Higher solar energy (sunspot number) at birth was significantly associated with reduced lifespan, with effects emerging after age 47 and larger disparities in some subgroups, consistent with an epigenetic solar-imprinting mechanism. Males born at SSN>90 vs ≤90 averaged 66.3 vs 74.4 years (−8.1 yr); females 70.2 vs 78.1 years (−8.5 yr); African-American females up to −9.6 years

Evidence of synchronization between solar activity and agricultural performance in Germany

Frontiers in Agronomy

A 61-year record of 10 German crops shows agricultural yields oscillating in lockstep with the 11-year solar cycle, evidencing solar modulation of crop productivity. Dominant spectral peak at 10.67 years (95% CI 10.1–11.2 yr; secondary harmonics at 21.33 & 5.33 yr), p < 0.05; 61 yr (1960–2021), 10 crops; Monte Carlo (1000 iterations)

The influence of geomagnetic flux on global crop yields and income

Ecological Economics

Across global data, higher Earth geomagnetic field intensity is a robust determinant of significantly higher wheat, maize, and rice yields, consistent with magnetotropic stimulation of plant growth. A 1 mG rise in geomagnetic field strength ≈ +1% wheat & maize yields, +1.8% rice yields (soy n.s.); global yield panel 1985–2015; effect large enough to move per-capita agricultural value-added and GDP

Agriculture and sunspots

Nature

Seminal report that large-scale wheat production in multiple countries is modulated by the sunspot cycle, presumably via solar effects on temperature and rainfall. 10%–50% modulation of wheat production in China, the USA, and the USSR correlated with the ~11-yr and ~22-yr solar cycles

Sunspot activity influences tree growth: Molecular evidence and ecological implications

Molecular Ecology

Tree growth is lower during solar maxima, with molecular (gene-expression) evidence that solar-cycle-driven UV-B suppresses cell-wall genes, photosynthesis, and growth — a mechanistic solar-activity → tree-growth link. 11 tree species across a ~600 km latitudinal gradient in south-central Chile; growth depression at solar maximum strongest at low latitudes (higher UV-B); UV-B suppressed 4 of 5 cell-wall genes in Quillaja saponaria

Solar activity imprints in tree ring-data from northwestern Russia

Journal of Atmospheric and Solar-Terrestrial Physics

Scots pine tree-ring chronologies from the Kola Peninsula carry significant solar-activity periodicities, and tree-growth depressions coincide with Grand Solar Minima — a direct solar/cosmic-ray imprint on tree growth. Significant ~5.4, 11.7 and 22-yr solar periodicities in ring width; 11- and 22-yr tree-ring–cosmic-ray cycles persisted even through the Maunder Minimum; chronology spans 1445–2005 AD

Tree Rings of European Beech (Fagus sylvatica L.) Indicate the Relationship with Solar Cycles during Climate Change in Central and Southern Europe

Forests

European beech ring-width series track solar cycles, with growth variation coinciding with the ~11-yr Schwabe and ~22-yr Hale solar magnetic cycles across Central/Southern Europe. ~11-yr and 20–22-yr (Hale) oscillations detected in beech ring widths; growth changes coincide with the growth/fading of the solar magnetic cycle and Dalton/Gleissberg minima

Unknown effects of daily-scale solar activity on the plant growth: Data from 6-year growth monitoring of Sphagnum riparium

Physiologia Plantarum

High-resolution monitoring shows sunspot number significantly (though weakly) inhibits peat-moss growth on a daily scale, with the effect intensifying from solar minimum to maximum. 161,190 shoots measured over 6 years yielding 1,075 growth-rate values; inhibition significant between 6.7–15.3 °C and strongest for sunspot number lagged 4 days before growth

Geomagnetic Anomaly in the Growth Response of Peat Moss Sphagnum riparium to Temperature

Plants (Basel)

The geomagnetic Kp index modulates how strongly moss growth responds to temperature, with a distinct 'window' of enhanced temperature sensitivity at intermediate geomagnetic activity. Temperature–growth coupling r = 0.58 (n = 1439, P = 1.7×10⁻¹¹⁹) overall, rising to r = 0.65 (n = 464, P = 4.5×10⁻⁵⁸) within Kp 0.87–1.61

Correlation between the rate of growth of rice seedlings and the p-indices of the chemical test of Piccardi: a solar hypothesis

International Journal of Biometeorology

Rice-seedling growth rate correlates strongly with the Piccardi chemical-test indices, supporting a solar/space-weather influence on both a simple chemical reaction and living plant growth (the Piccardi tradition). Correlation coefficients exceeding 0.9 between rice-seedling growth rate and Piccardi p-indices, with very low probability of the null hypothesis

Space weather disrupts nocturnal bird migration

Proceedings of the National Academy of Sciences

Community-wide radar analysis shows fewer birds migrate and navigation effort drops during geomagnetic disturbances driven by space weather, demonstrating a population-scale space-weather effect on migration. 23 yr (1995–2018), 37 radar stations, >1.7M fall scans; 9–17% reduction in migration intensity during severe geomagnetic events and 25.4% drop in against-wind flight effort under overcast + high magnetic disturbance

Geomagnetic disturbance associated with increased vagrancy in migratory landbirds

Scientific Reports

Disruption of Earth's magnetic field is strongly associated with off-course (vagrant) migratory landbirds during fall migration across North America, implicating geomagnetic navigation failure. 2,226,936 banding records, 152 species, 1960–2019; +2 SD geomagnetic disturbance → +24% median vagrancy index and +250% spatiotemporally rare records (posterior ω = 0.109, 95% CrI 0.077–0.142, p(>0)=1.0)

Magnetic storms disrupt nocturnal migratory activity in songbirds

Biology Letters

Under simulated solar-storm geomagnetic conditions, European robins suppressed nocturnal migratory restlessness and shifted activity to daytime, showing a direct behavioral response to magnetic-storm-like disturbance. Controlled orientation-cage experiment on 3 songbird species; European robin significantly reduced nocturnal migratory restlessness and increased early-morning (visual-cue) activity under simulated solar storms

Gray whales strand more often on days with increased levels of atmospheric radio-frequency noise

Current Biology

Live gray-whale strandings cluster on days of high solar-storm-driven atmospheric radio-frequency noise, indicating space-weather disruption of the whales' magnetic navigation sense. 31 years of stranding data (n = 186); strandings significantly more likely on high solar-activity / high RF-noise days (gray whales ~4.3× more likely to strand under high solar-outburst RF noise), building on a prior positive strandings–sunspot relationship

The Possible Effect of Space Weather Factors on Various Physiological Systems of the Human Organism

Atmosphere (MDPI), 12(3):346

Flagship 25-year systematic review of heliobiology: on the daily scale, geomagnetic storms and other space-weather events plausibly drive short-term morbidity outbreaks and functional-state deterioration, with hospital statistics linking geomagnetic disturbances to blood-flow pathologies (myocardial infarction, stroke). Systematizes ~25 years of solar-biospheric studies across 3 axes (time scale x biological organization level x degree of response)

Revealing trends: A bibliometric analysis of 28 years of space weather event research publications using the Scopus databases (1994-2022)

Advances in Space Research, 72(12):5753-5766

Quantifies the scale and steady growth of the space-weather research corpus in Scopus, documenting a substantial, expanding literature (publications rising steadily since 2005) and mapping the field's country/institution co-authorship structure. 2,779 Scopus articles over 28 years (1,713 after removing reviews); sustained growth since 2005

Effects of Space Weather on Biomedical Parameters during the Solar Activity Cycles 23-24

Bulletin of Experimental Biology and Medicine, 159(2):269-272

Fourteen-year (1998-2012) biomedical monitoring shows biological parameters track space weather and reveal a distinct 2005 shift in statistical distribution, interpreted as a biosphere adaptation response to changing heliogeophysical conditions rather than random variation. 14 years of continuous biomedical monitoring across solar cycles 23-24

Comparative analysis of modern research methods of biotropic effects of space weather

RUDN Journal of Medicine, No. 4:5-10

Biotropic-effects review arguing space-weather influence on biosystems proceeds through nonlinear processes, and that cosmogeophysical factors have shaped adaptation and the formation of life on Earth. Comparative methodological review of biotropic space-weather research approaches

Synchronization of Human Autonomic Nervous System Rhythms with Geomagnetic Activity in Human Subjects

International Journal of Environmental Research and Public Health, 14(7):770

Foundational mechanism study: over 31 days of continuous monitoring, group heart-rate variability correlated significantly with solar wind speed, Kp, Ap, solar radio flux, cosmic-ray counts and Schumann-resonance power, and participants' HRV rhythms synchronized (~2.5-day period) despite being in separate locations. 10 subjects, 31 days; significant HRV correlations with multiple space-weather indices; group synchronization at ~2.5-day period

Geomagnetic Storms: Association with Incidence of Depression as Measured by Hospital Admission

British Journal of Psychiatry, 164(3):403-409

Seminal high-impact study finding a statistically significant surge in male hospital admissions for depressed-phase manic-depressive illness in the second week following geomagnetic storms, supporting a heliogeophysical contribution to seasonal depression. +36.2% male admissions for depressed-phase manic-depressive illness in the 2nd week after geomagnetic storms (statistically significant)

Chronoastrobiology: proposal, nine conferences, heliogeomagnetics, transyears, near-weeks, near-decades, phylogenetic and ontogenetic memories

Biomedicine & Pharmacotherapy, 58(Suppl 1):S150-S187

Foundational programmatic review proposing chronoastrobiology: it identifies matching near-transyear cycles in the solar wind and interplanetary magnetic field and in biological variables, arguing nonphotic heliogeomagnetic cycles are imprinted as coperiodisms in living matter. Documents congruent ~near-transyear periodicities shared between solar wind / IMF / geomagnetic aa index and biological variables

Magnetic factor in solar-terrestrial relations and its impact on the human body: physical problems and prospects for research

Physics-Uspekhi, 59(5):502-510

Authoritative physics review affirming the reality of biological effects of very weak alternating magnetic fields tied to solar and geomagnetic activity, and framing the outstanding physical problem of the biophysical mechanism as the key research frontier. High-impact physics-journal review affirming the geomagnetic biotropic effect while defining the open mechanistic problem

Biological effects related to geomagnetic activity and possible mechanisms

Bioelectromagnetics, 38(7):497-510

Comprehensive review presenting contemporary evidence that geomagnetic-activity indices correlate with biological parameters (corroborated by simulated-geomagnetic-storm experiments), and advancing candidate mechanisms: circadian-rhythm disruption, cryptochrome, melatonin, and the CG8198 gene. Synthesizes correlational + simulated-storm experimental evidence and proposes cryptochrome/melatonin/circadian mechanisms

A nearly universal solar wind-magnetosphere coupling function inferred from 10 magnetospheric state variables

Journal of Geophysical Research

Foundational paper deriving a coupling function that estimates solar-wind-to-magnetosphere energy transfer from upstream measurements — widely used in modern space-weather models.

On the effects in cosmic-ray intensity observed during the recent magnetic storm

Physical Review

The original Forbush decrease paper — the sudden drop in galactic cosmic-ray flux at Earth during passing CMEs. Foundational to the cosmic-ray modulation literature.

The standardized index, Ks, and the planetary index, Kp

IATME Bulletin

The original Kp index definition — still the field's standard geomagnetic-disturbance index nearly 90 years later.