Urolithin A seems to improve mitochondrial health in older adults https://www.theguardian.com/science/2022/jun/26/can-our-mitochondria-help-to-beat-long-covid Urolithin A activates a process called autophagy https://www.theguardian.com/science/2024/jan/27/why-longer-lives-for-our-dogs-could-mean-longer-lives-for-us Certain microbes can convert the raw ingredients in pomegranates into urolithin A https://www.theguardian.com/lifeandstyle/shortcuts/2016/jul/12/yotam-ottolenghis-top-pomegranate-tips