The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial
“Supplementation of magnesium appears to improve subjective and objective measures of insomnia in elderly people and may become a useful instrument in managing sleep disorders in the elderly, which could also be extended as a helpful aid to the general population.” Link to article here https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703169/