Geomagnetic activity and human melatonin metabolite excretion
Abstract
Elevated geomagnetic activity has been linked with human psychological, neurological and cardiovascular outcomes, and altered melatonin production has been implicated as an underlying mechanism to explain these effects. The relationship between geomagnetic activity and overnight excretion of the melatonin metabolite, 6-hydroxymelatonin sulfate (6-OHMS), was evaluated in a population of 153 male electric utility workers. The effect of geomagnetic activity combined with either 60Hz magnetic field or ambient light exposures was also evaluated. Elevated equivalent amplitudes (USGS, Boulder, CO) were associated with lower adjusted mean nocturnal 6-OHMS/cr concentrations and reduced total overnight 6-OHMS excretion, consistent with a previous study. Time intervals in which geomagnetic activity predicted the largest differences in mean 6-OHMS excretion generally occurred between 15- and 33-h prior to urine sample collection. These times coincide with key periods of melatonin regulation and production, respectively, suggesting that geomagnetic activity may play a role in the entrainment of human melatonin rhythms.
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Nocturnal human melatonin production can be influenced by geomagnetic activity.
“Nocturnal human melatonin production can be influenced by geomagnetic activity (Burch et al., 2008).”
From Sex-specific association of the lunar cycle with sleep (2022) · cites this paper as Burch et al., 2008
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“Higher GMA levels are associated with lower total overnight melatonin levels (Burch et al., 2008).”
- Authors
- Burch, J. B., Reif, J. S., & Yost, M. G.
- Affiliations
- University of South Carolina (US)
- Colorado State University (US)
- University of Washington (US)
- Corresponding author
- Burch, James B.
- Venue
- Neuroscience Letters
- Publisher
- Elsevier BV
- Published
- 2008-06
- Volume
- 438
- Issue
- 1
- Pages
- 76-79
- ISSN
- 0304-3940 (ISSN-L)
- OpenAlex
- W2121245538
- Cited by
- 52
- References
- 24
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 6 · 2020: 4 · 2019: 6 · 2018: 5 · 2017: 4 · 2015: 4 · 2014: 2 · 2013: 2 · 2012: 4
- FWCI
- 0.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroscience Letters (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Colorado State University
- National Institutes of Health
- National Oceanic and Atmospheric Administration
- National Institute of Environmental Health Sciences (R01ES008117, 1 R01ES08117)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Electromagnetic Fields and Biological Effects
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Geomagnetism and Paleomagnetism Studies
- Keywords
- geomagnetic activity, melatonin, 6-hydroxymelatonin sulfate, ambient light exposure, electric utility employees, nocturnal urine, circadian rhythm
- MeSH terms
- Adult, Circadian Rhythm, Electromagnetic Fields, Humans, Male, Melatonin, Middle Aged, Pineal Gland, Radiation, Up-Regulation
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