Study reveals hidden DNA damage may decide how long humans live

For centuries, humans have searched for ways to extend life, first through medicine that prevented early deaths and later through research aimed at slowing the biological processes associated with aging. But even if scientists eventually found a way to stop many age-related problems, the body might still face limits built into its own cells. A new mathematical model explores what human lifespan could look like if aging itself were removed while one unavoidable process continued: the gradual accumulation of DNA errors inside ordinary cells.The result suggests that humans might live far longer than today’s record holders, but not indefinitely. Genetic damage may eventually become a barrier.How DNA mutations could become the next lifespan barrierEvery day, cells divide, repair themselves and carry out countless biological tasks. During those processes, small mistakes can appear in DNA.