A new study suggests there may be a biological limit to how long humans can live, even if future medicine manages to slow or reverse many aspects of aging. Researchers estimate the maximum human lifespan could be around 146 to 194 years, with irreversible DNA mutations in the heart and brain remaining one of the biggest obstacles to living longer. The findings, published in the journal npj Aging, highlight that some forms of age-related damage may be impossible to fully overcome with current scientific understanding. #lifespan #science #biology #health