Guides · Taurine and aging

Taurine and aging: what the 2023 study claimed and what the 2025 follow-up found

Taurine became a longevity supplement after a 2023 Science paper reported that blood taurine falls with age in mice, monkeys and people, and that supplements extended healthy life in mice and improved health markers in monkeys. In 2025 a second Science paper measured taurine over time in three human cohorts and found it rose or stayed the same with age, so falling taurine is not a universal feature of aging. Human trial data are limited to small studies of blood markers. Taurine has not been shown to slow aging in people.

Written by The Bioregulator Atlas editorial team · Medical review pending · Facts and prices checked Oct 7, 2026

2023 (Science)
Supplementation increased healthspan and lifespan in mice; healthspan in monkeys(source)
2025 (Science)
Taurine increased or stayed unchanged with age in three human cohorts(source)
Human trial
24 women aged 55–70, 1.5 g/day for 16 weeks: higher SOD (an antioxidant enzyme)(source)
Outcome trials
None found testing taurine on human aging outcomes (search Oct 7, 2026)

The 2023 case for taurine

Singh and colleagues reported that circulating taurine declines with age in mice, monkeys and humans. Supplementing taurine increased healthspan and lifespan in mice and healthspan in monkeys, and mechanistically it reduced cellular senescence, DNA damage and mitochondrial dysfunction. In people, lower taurine levels correlated with several age-related diseases. The authors concluded that human clinical trials were warranted; they did not test taurine supplements in people.

The 2025 challenge

Fernandez and colleagues measured circulating taurine in three geographically distinct human cohorts, plus monkeys and mice, both repeatedly in the same individuals and across age groups. Taurine increased or stayed unchanged with age. Links between taurine and health outcomes varied widely. They concluded that falling taurine is not a universal feature of aging, which weakens the rationale for "topping it back up".

What human trials exist

The trials we found are small and measure markers rather than aging. In one double-blind study, 24 women aged 55 to 70 took 1.5 g of taurine or placebo for 16 weeks; taurine raised blood taurine and the antioxidant enzyme superoxide dismutase, and prevented a rise in a marker of oxidative damage seen with placebo. That is a biomarker change, not evidence of slower aging. Larger trials have been proposed but had not reported results when we checked.

Safety

Taurine occurs naturally in meat, fish and dairy and is a common ingredient in energy drinks. There are no long-term safety data on high-dose taurine supplements for healthy aging. If you take medicines or have kidney or heart conditions, check with a clinician first.

FAQ

Does taurine slow aging?

Not shown in people. It extended healthspan and lifespan in mice and improved health markers in monkeys, but no human trial has tested aging outcomes.

Do taurine levels drop with age?

A 2023 study said yes; a larger 2025 analysis of three human cohorts found taurine increased or stayed the same with age. The answer appears to depend on the person and the context.

Is there any human trial of taurine for aging?

Only small biomarker studies, such as a 16-week trial in 24 women aged 55 to 70 that found higher antioxidant enzyme levels. Larger aging trials had not reported results when we checked on Oct 7, 2026.

Is taurine safe?

It is a normal part of the diet, but long-term safety data on high-dose supplements are lacking.

Do you earn money from this page?

No. This page has no paid links. We do not have an affiliate relationship with any brand that sells these supplements, so none is featured.

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Not medical advice. Medical review pending: this page has not yet been reviewed by a licensed clinician. Statements about dietary supplements have not been evaluated by the Food and Drug Administration; these products are not intended to diagnose, treat, cure or prevent any disease. Compounded medicines are not FDA-approved. Prices change often; confirm on the seller's page.