The key to a long life is avoiding the ‘poisonous 5 P’s,’ says one of the world’s top anti-aging experts

By Alexa Mikhail – Fortune.com

Long before Bryan Johnson became famous for his extreme biohacking—undergoing countless tests, following strict eating habits, and taking dozens of supplements in the name of living forever—Valter Longo was obsessed with longevity. 

In a profile of the scientist in the New York Times, Longo, a professor of gerontology and director of the USC Longevity Institute in California, says he wants to live 120 to 130 healthy years. His drive for longevity aligns with a growing interest in extending health span, the number of years lived free of disease, as opposed to life span—which refers to the number of years lived.