September 29, 2026
Taurine is an amino acid found in meat, fish and your own cells.
In 2023, a study in Science reported that taurine supplementation extended lifespan in mice and worms and improved many markers of health in mice and monkeys.
It turned an overlooked nutrient into one of the most discussed longevity ingredients, though a 2025 follow-up complicated part of the story.
Key facts
- Taurine supplementation increased median lifespan in mice by roughly 10-12% (Singh et al., Science, 2023).
- Treated mice and monkeys showed better bone, muscle, metabolic and immune health.
- In humans, higher taurine levels were associated with better health, and exercise raised taurine levels. These are associations, not proof of cause.
- A 2025 study questioned whether taurine reliably declines with age across species.
What is taurine?
Taurine is a sulfur containing amino acid. Unlike most amino acids, it isn't used to build proteins.
Instead, it works on its own. It helps regulate calcium and fluid balance in cells, supports bile formation, stabilizes cell membranes and supports mitochondrial function. It is especially concentrated in the heart, muscles, eyes and brain.
Your body makes some taurine, and you get more from animal foods. Vegetarians and vegans typically consume much less.
What did the 2023 Science study find?
The study was led by Parminder Singh and Vijay Yadav at Columbia University, with collaborators around the world.
In mice. Researchers gave middle-aged mice (14 months old) daily taurine. Median lifespan increased by about 10-12%, and life expectancy for mice that reached old age rose further.
Treated mice also had stronger bones and muscles, better glucose control, healthier immune function and less anxiety-like behavior.
In worms and monkeys. Taurine extended lifespan in worms. Middle aged rhesus monkeys given taurine for six months showed better bone density, blood sugar control, liver health and immune markers.
Cellular effects. At the cellular level, taurine reduced senescent cells, improved mitochondrial function, reduced DNA damage and dampened inflammation. Those map onto several hallmarks of aging.
In humans. The team analyzed data from about 12,000 European adults. People with higher blood taurine levels tended to have lower rates of obesity, type 2 diabetes and high blood pressure, and lower inflammation.
The team also found that exercise increased blood taurine levels. These are correlations. They don't show that taking taurine causes the benefits.
The 2025 follow-up: is taurine really a marker of aging?
In 2025, a team from the US National Institutes of Health published another study in Science (Fernandez et al., 2025). Looking at humans, monkeys and mice over time, they found that taurine levels did not consistently fall with age.
In some groups they stayed flat or even rose, and they varied widely between individuals.
This doesn't erase the 2023 findings. The mouse lifespan and healthspan results still stand.
But it weakens the simple story that aging causes a taurine shortage that supplements refill.
The honest summary: taurine supplementation showed benefits in animals, but whether it slows aging in people is still unproven.
How much taurine should you take?
The mouse doses in the 2023 study would translate to several grams per day for an adult human.
Human studies of taurine for other purposes have commonly used 1-3 grams daily, and a typical diet provides somewhere under 500 mg.
Ares contains 1,000 mg. That is above what most diets supply and in the range used in human research, but below the human equivalent doses in the mouse lifespan study.
Is taurine safe?
Taurine has a strong safety record.
European food safety authorities have considered intakes up to 3 grams per day to be safe for adults.
It is found in energy drinks at around 1,000 mg per can, although those drinks' other ingredients are a separate question.
People with kidney disease, those on lithium or blood pressure medications, and pregnant or nursing women should check with a doctor first.
The bottom line
Taurine combines a strong animal evidence base, human associations and an excellent safety profile.
The open question is whether it slows aging in people, and a large human trial would settle it.
Until then, it's a low risk, high plausibility part of a longevity stack. See the full formula in My Longevity Stack and compare the evidence in Longevity Supplements That Actually Have Human Data.
FAQ
Does taurine extend lifespan? In mice and worms, yes, according to the 2023 Science study. It has not been shown to extend lifespan in humans.
Do taurine levels drop with age? The 2023 study reported declines, but a 2025 study found levels did not consistently fall with age and varied widely between people.
Can I get taurine from food? Yes, mainly from meat, fish and shellfish. Plant foods contain very little, so vegetarians and vegans typically get less.
Is the taurine in energy drinks the same? Chemically, yes. But energy drinks also contain caffeine and sugar, so they aren't a good way to get taurine.
Published by the SciRouter Editorial Team for general educational purposes. Last updated September 2026.
Educational disclaimer. This article is for educational and informational purposes only and is not medical advice. It summarizes published scientific research and does not endorse any specific product, supplement, drug, or treatment. These statements have not been evaluated by the Food and Drug Administration, and any products mentioned are not intended to diagnose, treat, cure, or prevent any disease. Always consult a licensed physician before starting, stopping, or changing any supplement or medication, especially if you are pregnant, nursing, have a medical condition, or take prescription medication.
