In a University of Oregon laboratory, scientists have achieved one of the most dramatic lifespan extensions ever recorded in an animal—446 percent in male roundworms—by silencing a single molecular signaling pathway. The discovery, published in the journal Aging in 2026, reveals that sex and tissue identity profoundly shape how an organism responds to the same genetic intervention, challenging the long-held assumption that longevity pathways operate uniformly across bodies. Perhaps most instructively, the work reminds us that living longer and living well are not the same promise, and that bio