NIH researchers conclude that taurine is unlikely to be a good aging biomarker

Researchers compared taurine levels, a substance found naturally in the body, in people of different ages. They used blood measurements from several human studies and checked whether taurine consistently fell with age or matched signs of better health. Taurine levels did not show a dependable age-related pattern. This challenges earlier research suggesting that taurine drops with age and that taking more might slow aging.

What this means for you: Do not buy taurine supplements just because they are marketed as an anti-aging treatment. The study does not prove taurine is useless, but it shows that blood taurine is not yet a reliable guide to aging or a reason to supplement.