A 41-year-old longevity doctor says his ‘biological age’ is 24. He takes 3 supplements daily. A 41-year-old longevity doctor says his ‘biological age’ is 24. He takes 3 supplements daily. Learn More:https://www.anyfans.com/newsLink.html?url=https%3A%2F%2Fwww.yahoo.com%2Flifestyle%2F41-old-longevity-doctor-says-121230754.html