New Delhi, Nov. 21 -- US tech entrepreneur and anti-ageing influencer Bryan Johnson, known for spending millions each year to reverse his biological age, has claimed that at 48, many of his vital health markers resemble that of an 18-year-old. Johnson, who runs the longevity start-up Blueprint, credited strict sleep habits, nutrition, exercise and the elimination of "bad habits" for what he calls the "80/20" of his regimen.

Johnson shared a detailed list of his biomarkers on X, writing: "I'm 48 but in many ways my body runs like an 18-year-old. If you're in a good place, keep it up. If you're struggling, take the first step; it's always the hardest and always worth it."

He listed several metrics he says fall in the top percentile ranges...