Space Weather & Chronic Pain

What Is Space Weather?

Space weather refers to the changing environmental conditions in near-Earth space, driven primarily by activity on the Sun. Unlike conventional weather (driven by atmospheric dynamics), space weather encompasses solar flares, coronal mass ejections (CMEs), solar wind streams, and the fluctuating strength of Earth's geomagnetic field.

These events are monitored continuously by NOAA's Space Weather Prediction Center (SWPC) and NASA satellites including the Deep Space Climate Observatory (DSCOVR) and the ACE spacecraft. Their real-time data feeds are free and public — the same sources any space-weather tool draws on.

Key Solar Events

The Kp Index — Your Key Metric

The planetary Kp index is the single most important space weather metric for health-related applications. It measures the global level of geomagnetic disturbance on a quasi-logarithmic scale from 0 (very quiet) to 9 (extreme storm). It is updated every 3 hours by NOAA and is available in real-time via the SWPC API.

How Space Weather Affects Chronic Pain — The Biology

The connection between geomagnetic activity and chronic pain is not folklore — it is an active area of peer-reviewed research. But it is early research: the mechanisms below are proposed and partially supported, not settled science, and much of the work involves small samples or correlational designs. We present them as what researchers are investigating — not as established fact, and not as anything you should act on.

1. The Melatonin–Serotonin Pathway

The pineal gland, which regulates the circadian hormone cycle, is sensitive to changes in ambient magnetic fields. Geomagnetic disturbances have been reported to suppress the enzyme activity (N-acetyltransferase and HIOMT) responsible for converting serotonin into melatonin [1, 2]. The proposed result is reduced melatonin output during geomagnetically active periods, though this has not been consistently replicated.

This matters for pain patients because melatonin is a direct analgesic modulator. A landmark 2016 review by Danilov & Kurganova documented melatonin's pain-reducing effects across fibromyalgia, chronic back pain, headaches, and irritable bowel syndrome [3]. A 2021 meta-analysis (Chaudhry et al.) confirmed that low melatonin is associated with disrupted sleep architecture and amplified central sensitisation in chronic pain [4]. Fibromyalgia patients are known to have chronically low serotonin and melatonin levels [5], which has led some researchers to hypothesise greater vulnerability to disruption of this pathway. That hypothesis has not been tested directly.

2. Circadian Rhythm Disruption and Neuroinflammation

A 2023 review in Biomedical Journal (Martel et al.) argued that geomagnetic field weakening and disturbance may disrupt the molecular clockwork governing circadian gene expression [6]. Disrupted circadian rhythms are a well-established driver of pro-inflammatory cytokine release (TNF-α, IL-6, IL-1β). For chronic pain conditions where neuroinflammation plays a central role — such as fibromyalgia, rheumatoid arthritis, and neuropathic pain — this has been proposed as a trigger pathway — plausible, but not demonstrated in chronic pain patients specifically.

3. Inflammatory Biomarker Elevation with Lag Effect

A multi-variable study by Pahlen (2018) tracking solar variability against clinical laboratory parameters in human volunteers found measurable associations between geomagnetic disturbances and elevated inflammatory markers, with the effect most pronounced approximately 3–4 days after the geomagnetic event [8]. The authors attribute this lag to the time cytokine cascades take to amplify. If the effect is real, it would mean a storm on Monday might not show up until Thursday or Friday — which is exactly the kind of delayed relationship that is invisible without a log.

4. Autonomic Nervous System Dysregulation

Research by Zenchenko, Khorseva, and Breus (multiple studies, 2021–2025) has extensively documented synchronisation effects between geomagnetic field oscillations and human heart rate variability (HRV) — a proxy for autonomic nervous system (ANS) balance [9, 10]. Reduced HRV and sympathetic dominance during geomagnetic storms have been associated with increased pain sensitivity and heightened stress response in these studies. Association is not causation, and the sample sizes are small. Their 2021 MDPI review identified plausible effects on cardiovascular, neuroendocrine, and immune systems during space weather events [9].

5. Human Physiological Response Data

A 2021 multi-region study by Mavromichalaki et al. in Atmosphere directly tracked physiological parameters against Kp index readings across multiple geographic populations and found significant correlations during geomagnetic storm periods, including during very low geomagnetic activity (a potential rebound effect) [11]. If that holds up, it would suggest a non-linear relationship — which is the sort of thing group averages hide and an individual log might surface.

How MPC Uses Space Weather Data

When this ships, MPC will read from the NOAA Space Weather Prediction Center free public API at https://services.swpc.noaa.gov/. All data is free, public-domain, and updated in near real-time. No API key is required.

Data Sources & Endpoints

Fetching Live Kp Data — Example

async function getLatestKp() {
  const url = 'https://services.swpc.noaa.gov/json/planetary_k_index_1m.json';
  const response = await fetch(url);
  const data = await response.json();

  // Each entry: [time_tag, kp, a_running, station_count]
  const latest = data[data.length - 1];
  return {
    timestamp: latest[0],
    kp:        latest[1],
  };
}

// Example response entry:
// ["2026-05-02 14:00:00.000", 3.67, 15, 13]

What MPC Does With This

MPC does not tell you what to do about space weather, and it will not when this goes live. There is no risk score, no alert, no recommendation, and no suggestion about sleep, diet, supplements or scheduling. That is not what this app is for.

What it will do is record what the geomagnetic field was doing on each day you logged, and show it beside your own pain. If a pattern is there for you, you will be able to see it. If there isn't one, you'll see that too — and a flat result is a real answer, not a failure.

Whether any of the research above applies to you is a question your own logs answer better than any study cohort can. And anything you might want to change about how you manage your pain is a conversation with your clinician, not with a tracking app.

References & Further Reading

The following peer-reviewed studies and technical sources underpin the science presented on this page. All citations follow APA 7th edition format.

1. [1] Woldańska-Okońska, M., & Koszela, K. (2022). How magnetic fields (magnetotherapy and magnetic stimulation) influence serum serotonin concentrations in patients with low back pain — clinical observation study. International Journal of Environmental Research and Public Health, 19(22), 14955. https://doi.org/10.3390/ijerph192214955
2. [2] Woldańska-Okońska, M., & Koszela, K. (2024). The physiological impact of melatonin, its effect on the course of diseases and their therapy and the effect of magnetic fields on melatonin secretion. Biomolecules, 14(3), 366. https://doi.org/10.3390/biom14030366
3. [3] Danilov, A., & Kurganova, J. (2016). Melatonin in chronic pain syndromes. Pain and Therapy, 5(1), 1–17. https://doi.org/10.1007/s40122-016-0049-y
4. [4] Chaudhry, S. R., Stadlbauer, A., Buchfelder, M., & Kinfe, T. M. (2021). Melatonin moderates the triangle of chronic pain, sleep architecture and immunometabolic traffic. Biomedicines, 9(9), 1139. https://doi.org/10.3390/biomedicines9091139
5. [5] Kaur, T., & Shyu, B. C. (2018). Melatonin: a new-generation therapy for reducing chronic pain and improving sleep disorder-related pain. In Advances in Experimental Medicine and Biology: Mechanisms and Modulation of Chronic Pain (pp. 229–251). Springer.
6. [6] Martel, J., Chang, S. H., Chevalier, G., Ojcius, D. M., & Young, J. D. (2023). Influence of electromagnetic fields on the circadian rhythm: Implications for human health and disease. Biomedical Journal, 46(1), 48–59. https://doi.org/10.1016/j.bj.2022.09.000
7. [7] Horvath, G., Nagy, K., Tuboly, G., & Nagy, E. (2023). Pain and weather associations — action mechanisms; personalized profiling. Brain Research Bulletin, 196, 12–22. https://doi.org/10.1016/j.brainresbull.2023.03.004
8. [8] Pahlen, T. S. (2018). Association of solar variability and space weather factors with parameters of clinical chemistry, hematology, hemostasis, inflammatory biomarkers and heart rate variability [Research Report]. ResearchGate. https://www.researchgate.net
9. [9] Zenchenko, T. A., & Breus, T. K. (2021). The possible effect of space weather factors on various physiological systems of the human organism. Atmosphere, 12(3), 346. https://doi.org/10.3390/atmos12030346
10. [10] Zenchenko, T. A., Khorseva, N. I., Breus, T. K., & Drozdov, A. V. (2025). Effect of synchronization between millihertz geomagnetic field variations and human heart rate oscillations during strong magnetic storms. Atmosphere, 16(2), 189. https://doi.org/10.3390/atmos16020189
11. [11] Mavromichalaki, H., Papailiou, M. C., Gerontidou, M., et al. (2021). Human physiological parameters related to solar and geomagnetic disturbances: data from different geographic regions. Atmosphere, 12(3), 322. https://doi.org/10.3390/atmos12030322
12. [12] Palmer, S. J., Rycroft, M. J., & Cermack, M. (2006). Solar and geomagnetic activity, extremely low frequency magnetic and electric fields and human health at the Earth's surface. Surveys in Geophysics, 27(5), 557–595. https://doi.org/10.1007/s10712-006-9010-7
13. [13] Krylov, V. V. (2017). Biological effects related to geomagnetic activity and possible mechanisms. Bioelectromagnetics, 38(7), 497–510. https://doi.org/10.1002/bem.22062
14. [14] Popovych, I., Gozhenko, A., & Badiuk, N. (2021). Relationships between geomagnetic Ap-index and parameters of the immunity in patients with multiple sclerosis and radiculopathies. Journal of Education, Health and Sport, 11(10), 55–66.
15. [15] NOAA Space Weather Prediction Center. (2026). SWPC data services API documentation. National Oceanic and Atmospheric Administration. https://services.swpc.noaa.gov/