Is Magnesium useful for Schlaf?

Magnesium is often promoted for sleep, but the evidence is limited. Mechanistically, magnesium binds to GABA receptors and may support melatonin production. Some studies show modest improvements in insomnia, especially in older adults with low magnesium levels. However, effects are generally small and not consistent across populations. A blood test (e.g., MyBody-X) can measure magnesium status, but deficiency is rare in healthy individuals. If levels are normal, supplementation is unlikely to improve sleep. High doses (>350 mg) can cause diarrhea. For better sleep, focus on sleep hygiene, consistent bedtime, and stress management. The evidence for magnesium as a standalone sleep aid is weak to moderate. Consult a doctor before supplementing.