Urolithin A has caught the attention of longevity researchers and individuals interested in living healthier for longer. Derived from foods rich in ellagic acid, urolithin A has been shown to extend healthspan and lifespan in animal models. It also shows promise in humans for decreasing inflammation, increasing mitophagy, and enhancing muscle endurance and strength. While further research is needed to understand how urolithin A may impact humans, it’s nonetheless worth exploring for anyone interested in longevity.
But what are the benefits of urolithin A — and can a supplement compensate for what your body might not produce on its own? Aging is complex, and mitochondrial decline is just one piece of the puzzle. While urolithin A supports energy and recovery, it doesn’t address other key drivers, such as genomic instability, deregulated nutrient sensing, or cellular senescence.
Let’s explore the mechanisms, limitations, and how urolithin A compares to holistic longevity approaches like NOVOS Core, a multi-ingredient supplement designed to support 12 hallmarks of aging.
What Is Urolithin A and Why Does It Matter for Aging?
Your body produces urolithin A in your gut after consuming certain foods. Here’s how it works.
How Urolithin A Is Produced (and Why Many People Cannot Make It)
Foods like pomegranates, walnuts, and raspberries contain compounds called ellagitannins, which first convert into ellagic acid. From there, specific gut microbes turn that acid into urolithin A.
However, the ability to produce urolithin A depends on your gut microbiome, which changes with age and varies from person to person. In fact, only about 40% of people have the necessary microbes to produce urolithin A naturally, according to a review in Trends in Molecular Medicine.
So, even if you consume foods that help produce urolithin A, your body might not generate the actual compound, which is why many people take a urolithin A supplement.
Related: 15 Powerful Anti-Aging Foods That Slow Aging and Help You Live LongerÂ
How Urolithin A Works in the Body
Urolithin A acts primarily by enhancing mitophagy — the removal of damaged mitochondria — to improve energy production and cellular health.
Mitochondria, Aging, and Cellular Energy
Mitochondria power our cells. But as we age, they become less efficient and generate more harmful byproducts, such as free radicals. Mitochondrial dysfunction is one of the 12 root causes of aging, contributing to fatigue, inflammation, and age-related disease.
Mitophagy Explained: Urolithin A’s Primary Mechanism
Urolithin A activates mitophagy, a quality control process that removes dysfunctional mitochondria. This effect has been demonstrated in human trials, as summarized in a 2021 review showing improved mitochondrial efficiency and renewal in muscle cells.
Urolithin A Benefits for Muscle Strength and Physical Performance
As we age, we lose muscle mass and energy. Urolithin A directly targets this effect by revitalizing the mitochondria in muscle cells.
Improvements in Strength, Endurance, and VOâ‚‚ Max
A randomized, placebo-controlled trial in middle-aged adults published in Cell Reports Medicine found that four months of urolithin A supplementation led to approximately 12% improvements in muscle strength. Participants also experienced clinically meaningful improvements in aerobic endurance (VOâ‚‚ peak) and physical performance (six-minute walk test).Â
While the primary endpoint — peak power output — did not improve significantly, the study reported enhanced mitochondrial efficiency and reduced inflammation, as indicated by lower acylcarnitines and C-reactive protein levels. Urolithin A also increased the expression of proteins linked to mitophagy and mitochondrial metabolism in skeletal muscle.
Reduced Muscle Fatigue and Support for Recovery
In a randomized clinical trial, adults aged 65 to 90 took 1,000 mg of urolithin A daily for four months. While the supplement did not significantly improve walking distance or maximal ATP production compared to placebo, it did improve muscle endurance — measured by the number of muscle contractions until fatigue — in both the hands and legs.Â
The study also reported reduced levels of plasma acylcarnitines, ceramides, and C-reactive protein, all biomarkers associated with poor mitochondrial health and inflammation. These results suggest that urolithin A may help support recovery and muscle performance by enhancing mitochondrial efficiency in older adults.
Urolithin A Benefits for Healthy Aging and Inflammation
Urolithin A doesn’t just boost physical energy. It may help counteract age-related inflammation, which can indirectly support immune health.
Reduced Inflammation and Oxidative Stress
A 2025 review in Frontiers in Nutrition summarized how urolithin A may reduce exercise-induced inflammation and oxidative stress. Multiple studies found that UA lowered C-reactive protein (CRP) levels — a key marker of systemic inflammation — and reduced reactive oxygen species (ROS) by inhibiting NADPH oxidase activity. Animal models also showed increased production of antioxidant enzymes, like glutathione and catalase. Together, these effects suggest that UA may help protect muscle cells during physical stress and support healthier recovery.
Support for Immune and Cellular Function
The same review highlights how urolithin A enhances mitophagy and mitochondrial quality in human tissue — a process critical for energy production and cellular health. By improving how cells clear damaged mitochondria, UA may support overall resilience and cellular performance, especially in aging populations.
Heart and Brain Health: What the Research Suggests
Emerging research points to urolithin A’s potential to support cardiovascular and cognitive health.
Cardiovascular Support and Mitochondrial Quality
Animal studies suggest that urolithin A may support cardiovascular function by improving cardiac output, contractility, and stress resilience — particularly during prolonged physical activity. While urolithin A enhances mitochondrial health in cardiac tissue, its direct effects on blood vessel elasticity or endothelial function remain speculative. Some human studies using pomegranate extract (a potential precursor to urolithin A, depending on gut microbiota) have shown improved blood flow and vessel diameter. However, more research is needed to confirm these outcomes for urolithin A supplementation specifically.
Potential Neuroprotective Effects
A 2024 study showed that long-term urolithin A treatment improved memory, learning, and olfactory function in mice with Alzheimer’s-like disease. The treatment also reduced neuroinflammation markers and improved lysosomal function — key to clearing cellular waste in the brain.
What Does the Research Say About Safety and Dosage?
Evidence From Human Clinical Trials
Human studies have used doses between 250 mg and 1,000 mg per day. A 500 mg dose appears to be the sweet spot for efficacy and safety, showing improved function and reduced inflammation in older adults.
Safety, Side Effects, and Typical Dosage
Urolithin A is well-tolerated. Most participants reported no side effects.
The Key Limitation of Urolithin A
Why Urolithin A Only Targets Mitochondrial Health
While urolithin A’s effect on mitophagy is noteworthy, aging is more than just mitochondrial decline. The hallmarks of aging involve deregulated nutrient sensing, epigenetic drift, genomic instability, and more.
Why Aging Requires More Than One Pathway
For example, urolithin A does not address deregulated nutrient sensing, which is another root cause of aging. NOVOS Core includes compounds like glycine, alpha-ketoglutarate, and glucosamine sulfate to fill these gaps.
How NOVOS Core Goes Beyond Urolithin A
Targeting Mitochondria Plus 11 Other Hallmarks of Aging
NOVOS Core contains 12 scientifically backed ingredients that collectively target multiple longevity pathways:
- Glycine: Supports autophagy and collagen production
- Alpha-ketoglutarate: Improves nutrient sensing
- Magnesium malate: Supports mitochondrial energy and cognition
- Glucosamine sulfate and hyaluronic acid: Support joints, skin, and extracellular matrix
It’s part of a multi-product longevity system that also includes NOVOS Boost, NOVOS Vital, and NOVOS Age.
Why a Multi-Hallmark Approach Matters for Longevity
Aging is a systemic process, and no single molecule can stop it. NOVOS Core is designed to act on the full spectrum of aging biology, not just one mechanism.
Key Takeaway: Are Urolithin A Health Benefits Enough on Their Own?
Urolithin A is a validated compound for mitochondrial health, muscle function, and inflammation. But it targets only one pathway. Aging well requires more than mitophagy alone, making urolithin A supplement benefits limited.
NOVOS Core takes a comprehensive, multi-hallmark approach to aging. It builds upon the mitochondrial benefits of urolithin A while addressing other aging drivers.
If you’re serious about extending your healthspan, start with a formula designed for whole-body support and healthy aging.
