Human melatonin during continuous magnetic field exposure
- Midwest Research Inst., Kansas City, MO (United States)
This report describes the third in a series of double-blind, laboratory-based studies that were aimed at determining the effects of nocturnal exposure to power frequency magnetic fields on blood levels of melatonin in human volunteers. The two earlier studies evaluated effects on melatonin of intermittent exposure to 60 Hz circularly polarized magnetic fields at 10 and 200 mG. No overall effects on melatonin levels were found. In the present study, men were exposed continuously rather than intermittently through the night to the same 200 mG magnetic field condition that was used previously; again, no overall effects on melatonin levels were found. The authors conclude that the intermittent and continuous exposure conditions used in the laboratory to date are not effective in altering nocturnal blood levels of melatonin in human volunteers.
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 462585
- Journal Information:
- Bioelectromagnetics, Vol. 18, Issue 2; Other Information: PBD: 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Relation between residential magnetic fields, light-at-night, and nocturnal urine melatonin levels in women: Volume 1 -- Background and purpose, methods, results, discussion. Final report
Regularly scheduled, day-time, slow-onset 60 Hz electric and magnetic field exposure does not depress serum melatonin concentration in nonhuman primates