What common supplements do, what the evidence says, typical doses, side effects and who should talk to a doctor first.
Supplements
Creatine is one of the best studied sports supplements. What it does for strength, how much to take, why the scale goes up, what it means for your kidneys and who should avoid it.
Daniel Hayes · Oct 31, 2026
Supplements
Glycinate is gentle, citrate is well absorbed but loosens stools, and oxide is mostly a laxative. How the three forms differ, how much you need, the safe limit and who should check with a doctor first.
Oct 31, 2026 · 7 min read
Supplements
Sunlight covers most people in summer, but food rarely does. Here is who needs a vitamin D supplement, how much to take, D2 vs D3, when a blood test helps and how much is too much.
Oct 31, 2026 · 8 min read
