A 2023 study reported lifespan and healthspan effects in animals, not people. Here is what the taurine research found, including a later human study that did not find the same age-related association.
Evidence note: Animal lifespan results do not establish a human longevity benefit or dose. The human trials below measured shorter-term outcomes, not lifespan.
A June 2023 paper in *Science* reported that circulating taurine declined with age in mice, monkeys, and human datasets. Supplementation increased lifespan and healthspan measures in mice and improved healthspan measures in monkeys. Those animal results generated interest in taurine as a possible aging-related intervention, but they do not show that taurine supplements extend human life or improve human healthspan.
The paper reported age-related declines in its mouse and monkey samples and in human observational datasets. In the mouse experiments, supplementation increased median lifespan by about 10–12% and improved several measured healthspan outcomes. In monkeys, six months of supplementation improved some measured health indicators. The human data were observational; people were not assigned taurine to test whether supplementation improved aging outcomes (Singh et al., 2023).
The results are preclinical evidence. Findings in animals can motivate human research, but they cannot establish a safe or effective human anti-aging treatment.
Taurine is a sulfur-containing amino acid (technically an amino sulfonic acid) that the body both synthesizes and obtains from diet, concentrated in meat, fish, and shellfish. It is not incorporated into proteins the way other amino acids are; instead, it exists as a free molecule at very high concentrations in tissues with high metabolic demand — heart, skeletal muscle, retina, and brain.
Taurine has several biological roles, and experimental studies have examined its relationship to mitochondrial function and other aging-related processes. Mechanistic plausibility does not establish that taking a supplement improves human longevity.
The 2023 paper did not include a human supplementation trial testing lifespan or healthspan. A 2025 study measured taurine in 137 physically active and inactive men aged 20–93 and found no association with age, muscle mass, strength, physical performance, or mitochondrial function. This does not settle every question about taurine, but it challenges the idea that circulating taurine is a reliable marker of aging in people (Marcangeli et al., 2025).
Evidence about taurine in other settings does not establish an anti-aging benefit or a longevity dose. This article does not recommend taurine supplementation; people considering a supplement should discuss their own circumstances with a qualified health professional.
At present, the animal findings are not evidence that taurine prevents aging in humans. No human longevity dose or product can be inferred from the animal experiments or from studies of taurine for different purposes.
The 2023 study provides animal evidence, while human evidence remains observational and is not consistent across studies. Neither study establishes that taurine supplementation extends human lifespan or healthspan. The article does not endorse a product or dosage.
The strongest human evidence is not a longevity trial. A 2024 systematic review and meta-analysis combined 25 randomized trials with 1,024 participants. Doses ranged from 0.5 to 6 grams daily, and follow-up lasted from 5 to 365 days. The review reported changes in some cardiometabolic measures, including blood pressure, fasting glucose, and triglycerides, but the trials varied in participants, duration, and clinical purpose. These results do not establish that taurine prevents disease, slows aging, or extends life.
A much smaller randomized study enrolled 24 women aged 55–70: 13 received 1.5 g/day of taurine and 11 received placebo. It assessed oxidative-stress-related biomarkers, not lifespan, disability, or major clinical events. A biomarker moving in a favorable direction can help generate a hypothesis, but it is not the same as a demonstrated health benefit. The 2023 animal paper that popularized taurine for aging studied mice and monkeys; animal dosing and outcomes cannot be translated directly into a human anti-aging protocol.
Taurine occurs naturally in foods such as seafood and meat, and people who eat varied diets already obtain some from food. There is no established supplemental dose for longevity. If a clinician recommends a trial for a specific reason, agree on the intended outcome, product, dose, duration, and review date rather than copying the highest dose in a study. Do not combine several new supplements at once; that makes side effects and benefits difficult to interpret.
People with kidney or liver disease, those who are pregnant or breastfeeding, and people taking medicines that affect blood pressure or glucose should seek professional advice first. Short trials reporting few adverse events do not prove long-term safety for every population. Stop and seek medical advice for unexpected symptoms.
FAQ
Does taurine extend human lifespan? No human lifespan trial has shown that.
Is 6 g/day a recommended dose? No. It is the upper end of doses used in some studies, not an established longevity recommendation.
For related context, compare this evidence with our creatine guide and NMN/NAD guide.
Research: Taurine RCT meta-analysis (25 trials; 1,024 participants); small trial in women aged 55–70; NIH review of taurine and aging.