No association of 6-sulfatoxymelatonin with in-bed 60-Hz magnetic field exposure or illumination level among older adults.

We examined the association of 6-sulfatoxymelatonin (aMT6s) excretion with in-bed 60-Hz magnetic field (MF) exposure and other potential regulators. Adults aged 50-81 years (n=242 years, mean 67.6+/-5.

Depression and endogenous melatonin in postmenopausal women.

Background: Previous reports on melatonin secretion in depression are numerous but conflicting. There are very few studies relating the duration of the nocturnal melatonin peak to depression, and the results of those studies have been equivocal.

Methods: We studied mood disorders and urinary melatonin excretion in 382 postmenopausal women.