Key Takeaway
500mg magnesium daily for 8 weeks significantly improved sleep quality, sleep time, melatonin levels, and reduced cortisol in elderly with insomnia.
Summary
This double-blind, placebo-controlled trial examined the effect of magnesium supplementation on sleep quality in 46 elderly adults with primary insomnia.
Key findings:
- Sleep quality index improved significantly (p < 0.001)
- Sleep time increased
- Serum melatonin levels increased
- Cortisol levels decreased
- Sleep efficiency improved
Protocol:
- 500mg magnesium daily for 8 weeks
- Elderly participants (60-75 years)
- Measured both subjective and objective markers
Clinical significance:
Provides strong evidence for magnesium's role in sleep regulation, particularly in populations at high risk for deficiency.