First result: The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.
CONCLUSION:
Supplementation of magnesium appears to improve subjective measures of insomnia such as ISI score, sleep efficiency, sleep time and sleep onset latency, early morning awakening, and likewise, insomnia objective measures such as concentration of serum renin, melatonin, and serum cortisol, in elderly people.
btw I was a fan of Steve Cronin's channel and of reddit's nootropics subreddit. Steve's stuff was hardly experimental. Lots of this stuff is heavily researched. Youtube probably has input from Big Pharma. What's next, eliminating smoothy and juicing videos? Vegan recipes? Will they let themselves become a perfect shady of the corporate lifestyle?