Best Urolithin A for Longevity Support

Reviewed by SOMA HEALTH's Medical Research Team

Longevity is a crowded word. What most people actually want is to stay strong, energetic and capable for as many years as possible. Urolithin A has become one of the more talked about compounds in that conversation because it targets a recognised feature of biological aging: the gradual decline of mitochondrial quality. This SOMA HEALTH guide sets out what the human evidence supports, and where the exciting claims are still preclinical.

Why mitochondria sit at the centre of healthy aging

Mitochondria are the parts of your cells that turn food and oxygen into usable energy. Researchers describe declining mitochondrial function as one of the recognised hallmarks of aging, and a related process, mitophagy, tends to slow with age. Mitophagy is cellular quality control: it recycles worn out mitochondria so healthier ones can replace them. When that clean up slows, damaged mitochondria accumulate, and cells across many tissues become less efficient. Supporting mitophagy is therefore a logical structure and function target for people focused on aging well. It is a mechanism to support, not a switch that stops the clock.

We are deliberate about language here. SOMA HEALTH does not talk about reversing aging or a fountain of youth, because the science does not support that and honesty is the point. What the science does support is more specific and more useful.

What urolithin A is

Urolithin A is a gut postbiotic. Your body does not get it directly from food; instead, gut bacteria convert ellagitannins from pomegranate, walnuts and berries into urolithin A. The catch is that only some people carry the microbes needed to produce a meaningful amount, so diet alone is unreliable. A defined dose bypasses that lottery. Its headline action is support for mitophagy, which is why it keeps appearing in the longevity discussion. Our complete urolithin A guide covers the background, and our mitochondrial health page explains the biology in more depth.

The proven human evidence

The strongest, human data centres on muscle and safety. Andreux 2019 in Nature Metabolism was the first in human trial; it showed urolithin A was safe and well tolerated at single doses up to 1,000 mg per day and produced a mitochondrial gene expression signature in muscle. Liu and D'Amico 2022 in JAMA Network Open followed older adults for roughly four months and reported improved muscle endurance. Singh 2022 in Cell Reports Medicine studied middle aged adults over four months across 500 mg and 1,000 mg daily arms and reported gains in muscle strength and exercise performance. For anyone thinking about longevity, muscle is not a side topic: strength and stamina in midlife and beyond are among the most reliable markers of staying independent and active as you age.

Newer human signals worth knowing

The most relevant recent addition for the aging conversation is a 2025 randomised controlled trial in Nature Aging. Over roughly 28 days in midlife adults, it reported support for the mitochondrial health of immune cells, discussed in the context of inflammaging, the low grade inflammation that tends to increase with age. Alongside it, a 2024 eight week randomised trial in the Journal of the International Society of Sports Nutrition in resistance trained men, and a 2025 trial in distance runners, extend the work into fitter populations. These are genuine but early findings. They broaden the human story from muscle toward cellular resilience without yet proving anything about lifespan in people.

What is still preclinical

The most dramatic longevity claims come from preclinical research and should be labelled as such. The foundational Ryu 2016 study in Nature Medicine showed that urolithin A improved mitophagy and muscle function in rodents and extended lifespan in the worm C. elegans. Lifespan extension in a worm is a meaningful scientific result; it is not a human outcome, and it does not mean a supplement extends human life. Early or preclinical research is also exploring roles in skin, gut, brain and heart tissue, but those areas are at the hypothesis stage. A 2024 systematic review in Ageing Research Reviews, titled around targeting aging with urolithin A in humans, concluded that the human evidence is still emerging. That is the accurate summary to carry with you.

How to think about it in a longevity routine

Treat urolithin A as one supporting input, not a centrepiece. The foundations of aging well are unglamorous and well proven: regular resistance and aerobic exercise, sufficient protein, quality sleep, not smoking and managing metabolic health. Urolithin A fits alongside those as a way to support the mitochondrial side of muscle and cellular quality. Human trials used 500 to 1,000 mg per day, and because mitochondrial turnover is gradual, consistency over months matters more than any single dose. You can dig into timing on our how long urolithin A takes to work page and compare products on our best urolithin A gummies roundup.

A note on limits: aging is not a disease, and urolithin A is not a treatment for any condition. If you are managing specific health concerns as you age, or you take medication, work with your doctor rather than substituting a supplement for medical care.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This guide is educational and is not a substitute for advice from a qualified healthcare provider.