I have known a man who smoked, drank, ate a lot of meats, even smoked pots but he lived until the age of 107 years. I know another man who never smoked or drank, ate meat in moderation, walked 60 minutes every day regularly, never had belly fat, yet he died at the age of 50. I don't mean to say that lifestyle does not affect your life, what I am trying to say is how much you live depends on your DNA as well. All the information about your life is stored in your DNA including how much you live.