Urolithin B is primarily recognized for its potential health-promoting properties, particularly due to its anti-inflammatory and antioxidant activities. It is a metabolite produced by gut microbiota from ellagitannins and ellagic acid, compounds found in foods like pomegranates, berries, and nuts. Because of its ability to modulate cellular pathways related to aging and inflammation, Urolithin B is being studied for its role in supporting mitochondrial health and promoting muscle function, especially in older adults. It has shown promise in preclinical studies for improving cellular energy production and reducing markers of oxidative stress. Research also suggests it may help delay age-related muscle decline (sarcopenia) by enhancing mitophagy—the process of clearing damaged mitochondria. Due to these properties, Urolithin B is being explored as a dietary supplement ingredient aimed at promoting healthy aging and longevity. Additionally, its anti-inflammatory effects may benefit metabolic and neurodegenerative conditions, though human clinical evidence is still emerging. Ongoing studies are evaluating its bioavailability and long-term impact on age-associated diseases.