A new study from scientists at the National Institutes of Health has cast doubt on earlier research suggesting that taurine, an amino acid supplement popular among biohackers, can delay aging. The findings contradict previous studies in worms, mice, and monkeys that showed promising results, with taurine supplements extending lifespan by 10-12%. However, this new study found no steady decline in taurine levels as participants aged, including humans of various ages and monkeys.
The researchers suggested that limitations in earlier research may explain the conflicting results. Most previous studies were “cross-sectional,” meaning they examined many participants at a single point in time rather than following them over an extended period. The new study combined both cross-sectional and longitudinal data, finding that taurine levels varied between participants but were influenced more by factors like sex and species than by aging itself.
The scientists concluded that low circulating taurine concentrations are unlikely to serve as a good biomarker of aging. However, they noted that the effectiveness of taurine supplements depends on various factors and individual circumstances. Taurine is still considered a powerful antioxidant and anti-inflammatory agent with numerous health benefits, including supporting immune function, digestion, and energy production.
While most people get sufficient taurine from animal-based foods in their diet, vegans and vegetarians may require supplements to maintain optimal levels. The amino acid is also commonly found in energy drinks and bars.
Source: https://nypost.com/2025/06/07/health/supplement-beloved-by-biohackers-may-not-fight-aging-after-all