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Re:YouTube Is Removing Some Nootropics Channels by jimrandomh on Monday April 30, 2018 @07:11PM (#16963322)
Check the Wikipedia page on magnesium deficiency, https://en.wikipedia.org/wiki/Magnesium_deficiency_(medicine... . It has solid citations and says:

"Symptoms of magnesium deficiency include ... insomnia" and "57% of the US population does not meet the US RDA for dietary intake of magnesium."

I don't know what was in the video beyond its title, but the title is solidly inside the bounds of established science.

Re:YouTube Is Removing Some Nootropics Channels by vkou on Monday April 30, 2018 @07:26PM (#16963399)
The difference between established science, and medical advice is that the latter needs to look at the body as a holistic system.

Magnesium deficiency may be a documented problem, with documented symptoms. Taking magnesium to correct it may have unfortunate side effects, due to other drugs that you're taking, or other conditions that you may have.

Re:YouTube Is Removing Some Nootropics Channels by Barrin92 on Monday April 30, 2018 @08:15PM (#16963674)
And beta-blockers lower blood pressure, that doesn't mean you should take them because someone on youtube tells you to. You should take drugs or supplements when a physician tells you that something is wrong that needs fixing.