Two dozen outlets ran the same glucosamine-Alzheimer’s scare in four days. The new Nature Metabolism paper is strong mouse biology with a weak hospital-records footnote, and the bigger human data points the other way.
Caffeine is the most-studied performance drug in sport, and it works, modestly. What matters after 50 is the dose, the timing, and whether the label tells you the number.
My own doctor told me to quit creatine because a number on my bloodwork went up. That number was never measuring what he thought it was. I take creatine every day, and at my last physical my doctor told me to stop. His reason: my creatinine had crept up on the panel, and creatinine is
