A natural compound linked to gut bacteria may help rejuvenate aging immune cells, scientists say.

Scientists have identified a natural compound called urolithin A that may help reverse signs of immune aging, offering a promising new path for keeping the body’s defenses strong as we get older. The compound, which forms in the gut when certain foods are digested, appears to restore energy and function in T cells that weaken with age. While research is still early, the findings suggest it may be possible to “recharge” older immune cells and help the body respond better to infections, vaccines, and disease.








