> he looks really good for his age That's anectodal and also quite subjective. The fact that he uses this as an argument for his studies (I've heard him saying

> he looks really good for his age That's anectodal and also quite subjective. The fact that he uses this as an argument for his studies (I've heard him saying exactly that in interviews) makes it very hard to take him seriously. > depends if it is due of his lifestyle or not Most likely genetics. I know plenty of people who look great for their ages whilst eating what Sinclair would probably consider a bad diet (mostly beef and processed meats, with some grains, vegetables and fruits interspersed) and taking no supplements. I'm talking about senior people who appear 10-15 years younger than their ages. I'm not using these anecdotes to promote not taking supplements or eating that kind of diet. Some of these people are but they're not in the business of selling their lifestyle and are not scientists at all. Also, looking good for one's age doesn't mean they're not going to die of a heart disease in 5 years time.