What is taurine?
Taurine is a small nutrient-like molecule, found mainly in fish, seafood and meat, that helps cells balance fluids and minerals and supports the heart, eyes and digestion.
Think of taurine as a building's maintenance crew that keeps the water pressure and electrical balance right in every room. You don't notice it until something goes wrong.
Why it matters for aging
Your body makes some taurine, and you get the rest from animal foods, especially shellfish, fish and dark poultry meat. Vegans tend to have lower intake. Taurine is also added to energy drinks and infant formula.
It became a longevity topic after mouse studies, but the human side of the story is now contested. Human trials are underway.
A common myth
Taurine levels crash with age, so supplements slow aging.
A 2023 study reported falling levels and longer life in taurine-fed mice. But a 2025 study following people over time found taurine stayed stable or rose with age in healthy individuals. Human benefits are unproven.
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Updated Nov 9, 2026 · All terms