Sam Altman's longevity startup is upping the dose in an Alzheimer's drug trial after a lackluster first round

Joe Betts-LaCroix is the CEO of Retro Biosciences, a longevity biotech company backed by Sam Altman. Retro Biosciences Retro Biosciences, a longevity startup funded by Sam Altman, is testing an Alzheimer's pill. The medicine is designed to clear out gunk that builds up in the brain as we age. In healthy volunteers, no major side effects have been detected, the company said. The Sam Altman-funded longevity startup Retro Biosciences is testing a longevity pill that the company hopes could one...