Chronopathological forms of magnesium depletion with hypofunction or with hyperfunction of the biological clock.
Durlach, J, Pagès, N, Bac, P et al.·Magnesium research·2002
This paper suggests that low magnesium levels may disrupt the body's internal clock (circadian rhythm) in two opposite ways. In one pattern, the clock runs too fast, causing depression, nighttime headaches, and fatigue—similar to symptoms in ME/CFS and fibromyalgia. In the other pattern, the clock runs too slow, causing anxiety, migraines, and sleep problems. The authors propose that measuring melatonin levels could help distinguish between these two patterns and guide treatment.