Bryan Johnson claims he didn't biologically age in a year, targets 'immortality by 2039'

US millionaire entrepreneur Bryan Johnson has claimed that he is still the same biological age as he was a year ago and will try to achieve "immortality" by 2039. Calling it an "absolutely insane moment", he shared his six-year-old journey, adding that his body "largely operates at elite 18-year-old levels". Johnson reportedly spends ₹18 crore/year on his age-reversal.