Scientists have discovered how to reverse aging at the cellular level by replicating a natural process that occurs when embryos shed aging markers. Recent breakthroughs in cellular rejuvenation, backed by billionaire investors like Jeff Bezos and Sam Altman, could soon treat diseases like glaucoma and potentially extend human healthspan by years, though significant questions remain about safety, accessibility, and societal implications. Embryos naturally reverse aging by shedding inherited markers shortly after conception, and scientists are now learning to replicate this process in adult cells to restore youthful function.