Higher blood taurine share linked to lower death risk
Adults in the highest quarter for taurine’s share of blood amino acids had 29% lower relative mortality risk than those in the lowest quarter.
Dose-response
Limit: Metabolic efficiency may explain the association rather than a protective effect of taurine
Edited by Boris Djordjevic · AgingResearch.News
In an observational study, researchers analyzed 2,321 participants in the Korean Genome and Epidemiology Study, with a mean age of 56.5 years; 51.4% were female. They used data from 2001–2022 to compare taurine’s share of blood amino acids—molecules that include protein building blocks—with dietary taurine relative to protein intake and a score based on 21 genetic variants.
The highest quarter for blood taurine share had 29% lower relative risk of death than the lowest quarter. Higher blood taurine share was also linked to less unhealthy aging, defined as scoring in the lowest quarter on a physiological healthy-aging index. That estimate’s range of likely values included no difference. Neither the dietary measure nor the genetic score was associated with mortality or unhealthy aging.
Why it matters
The study addressed whether taurine acts as a cause of biological aging or a marker of the body’s function. The authors suggested that its relative abundance may mark metabolic efficiency—how efficiently the body’s chemical processes work.
Caveats
This observational study cannot establish that taurine causes better aging outcomes or that taking supplements would help. The findings came from a Korean cohort, and the preprint has not been peer-reviewed.
- Dietary taurine-to-protein ratio
- Amino acid metabolism
- Physiological Healthy Aging Index
- Plasma taurine/total amino acid ratio
- Taurine metabolism genetic risk score
- Humans
The paper
Ewha Womans University
medRxiv, Jul 13, 2026, Open access, Preprint, not peer-reviewed
