Taurine is not a reliable biomarker of aging, according to research that runs counter to suggestions that supplementation could be an easy way to improve longevity.

The findings, in the journal Science , dispute earlier studies indicating levels of the amino acid decline with age and its potential as an anti-aging therapy.

The study revealed that circulating levels of taurine did not decline with age in three mammalian species, including humans, across the adult lifespan and, in fact, increased among women.

Differences between individuals were also generally greater than the longitudinal changes across lifespan, limiting its utility as a biomarker of aging.

Furthermore, the association between taurine levels and functional measures of health status depended on the context in which

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