Taurine

The longevity amino acid hiding in plain sight

1–3g of taurine daily. A 2023 Science paper identified taurine decline as a driver of aging — supplementing in mice and monkeys reversed multiple aging markers. In humans, taurine improves cardiovascular function, reduces oxidative stress, supports mitochondrial health, and has been found in high concentrations in young, healthy skin. It's inexpensive, tasteless, and fundamentally safe at supplemental doses.