Aman walks into his doctor’s surgery and requests advice on how to live to 100. The doctor tells the man to list all his vices, before instructing him to give up booze, cigarettes, sugar and sex. “Will that make me live longer?” asks the man. “Probably not,” shrugs the doctor. “But it’ll definitely seem that way.”
That old joke comes to mind whenever I hear of Bryan Johnson’s attempts to redefine his life expectancy. The American tech entrepreneur-turned-biohacker is renowned for the fanatical zeal of his efforts to reverse his biological age. Living alone, Johnson wakes at 4.30am, eats the last of his vegan meals by 11am and gulps down more than 100 pills every day. He avoids sunshine, shuns alcohol and never goes out in the evenings.
