Magnesium and melatonin: uses and risks for sleep

Recent discussions regarding sleep aids highlight the differing roles of melatonin and magnesium. Melatonin is a hormone that signals the body when it is time to sleep, making it useful for correcting circadian rhythm disruptions such as jet lag or shift work. Magnesium is a mineral essential for nerve and muscle function that may aid relaxation.

Studies published in 'Nature and Science of Sleep' and 'Sleep Medicine: X' suggest that while magnesium supplements like magnesium bisglycinate and magnesium L-threonate may offer some benefits for sleep quality, the results are often modest and may primarily benefit those with existing deficiencies.

However, excessive magnesium intake can lead to adverse effects. Common side effects include digestive issues such as stomach pain, nausea, and diarrhea, particularly with forms like magnesium carbonate, chloride, oxide, and gluconate. In rare, severe cases, excessive consumption can lead to hypermagnesemia, which may cause low blood pressure, muscle weakness, irregular heartbeat, and potentially life-threatening complications like respiratory issues or cardiac arrest.