It's not just for gym bros — scientists say a $0.50 muscle-building supplement slows aging and may counteract Alzheimer's

Scientists have concluded that its byproduct, AMP, triggers mitochondrial growth.

Studies like this highlight a potential negative effect of high-dose vitamin supplementation, which can indiscriminately block the stimulus our bodies need to grow stronger. For this reason, I do not recommend excessive vitamin supplements—instead, a wiser approach is to naturally stimulate the body’s own, far more potent antioxidant compounds with

and a limited capacity for achievement. The key is a hormone called BDNF—one of the biggest scientific advances that no one is talking about. What it stands for (brain-derived neurotrophic factor) isn’t as important as what it means because if you don’t produce more BDNF, it could stand for “brain does not function.” The concept is best understood