Overview of Magnesium and Sleep Research A 2025 review of studies has examined magnesium’s effect on sleep and common sleep disorders, according to a report by registered dietitian nutritionist Molly Knudsen, M.S., RDN. The review, published in May 2026, consolidates findings on how this essential mineral influences rest. Nearly 90 percent of the U.S. population is estimated to have inadequate magnesium intake, the report stated, citing a 2025 study in Nutrients. Magnesium is involved in nervous system regulation, muscle function, and neurotransmitter signaling, supporting over 300 biochemical processes in the body, according to the review. A separate report by Evangelyn…

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