Urinary stone A. A research report has found that a substance called UrolithinA in pomegranate and other fruits may help slow down specific aging processes by improving the function of cell mitochondria; In addition, ingesting this compound poses no risk to human health. Research has shown that urolithin A can stimulate mitochondrial biogenesis in the same way as regular exercise, and is the only compound that can rebuild cells to recycle defective mitochondria.