Bryan Johnson, a 46-year-old tech entrepreneur and ... "Genetically, I should be bald. I started to lose my hair and go gray in my late 20s. Now, at 47, I've got a full head of hair and ~70% ...

Bryan Johnson, a biohacking enthusiast, has spent millions trying to slow aging. Instead, his use of the drug rapamycin may ...

Guerois is 28 but claims he has the 'biological age' of someone a decade younger after imitating controversial biohacker Bryan Johnson. He has spent the past two years following Johnson's ...