Tech entrepreneur and longevity advocate Bryan Johnson has discontinued his use of rapamycin, a controversial anti-ageing drug, after concerns it may have accelerated ageing rather than reversed it.

THE MAN THAT WANTS TO LIVE FOREVER") BRYAN JOHNSON: I wake up. I turn a specific light on in my bathroom that gives me sun-like exposure. I take three pills, go downstairs, start HRV therapy ...

NPR's A Martinez speaks with tech entrepreneur Bryan Johnson about the Netflix documentary "Don't Die: The Man That Wants To Live Forever," which portrays his quest to slow aging.