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Iron Supplementation: Who Needs It, Who Doesn't, and How to Test
Iron is the most common nutrient deficiency in the world — and simultaneously one of the most commonly taken supplements by people who have no deficiency at all. Both things are true, and the gap between them causes real problems....
Melatonin Supplementation: Dose-Response, Timing, and Long-Term Safety
The most popular sleep aid in America is a hormone your body already makes — and most people are taking it at doses 10 to 100 times higher than their brain ever produces naturally. Melatonin sales have more than doubled...