What role does Magnesium play in sleep?

Magnesium supports sleep primarily through GABA receptor modulation and melatonin production, promoting relaxation and sleep quality. However, the evidence is mixed: some human studies show benefits in older adults or those with deficiency, but large-scale RCTs in healthy populations are lacking. The provided MyBody-X context does not address magnesium directly, so this answer relies on general mechanistic and observational knowledge. Magnesium status can be assessed via blood or RBC tests, but supplementation should be targeted—excess causes gastrointestinal side effects. For sleep issues, focus on sleep hygiene, light exposure, and consistent timing. Magnesium is not a standalone solution; its role is modest and context-dependent. Evidence level: mechanistic/unclear due to absence of strong human data in the given context.