Longevity Expert Explains How Bryan Johnson Has Not Reduced His Pace of Aging by 31 Years

This was an expert assessment, not a controlled scientific study. It reviewed claims that one person’s aging rate had slowed by 31 years using biological-age tests, which estimate how old the body seems based on measurements. There was no large comparison group and no long-term proof that the program prevents illness or extends life. The reported results therefore cannot show that the approach works for other people.

What this means for you: Do not buy supplements or copy an expensive routine based on this claim. The evidence is too limited, and biological-age scores are not the same as living longer or staying healthier.