Allegedly there is a European aristocrat who's 215 years old who looks like he's 40.

A contact of mine who has been part of several esoteric societies and cults claims he knows an aristocrat who's 215 years old but looks like he's 40. He wouldn't tell me this person's name but he says he achieved extended life longevity by doing some kind of extreme dry fasting or something. Apparently living several hundreds of years is a common thing for people who are part of certain groups.

Have any of you heard of something similar? Please share your stories.