It's kind of funny how people who live for a long time have their own supposed reason for living so long. Like my great grandmother who is 95. She says she's lived for so long since she never avoided high fat or meat products, also because she's always been active - not obsessively so though, more because she's restless and always likes getting things done. I'm pretty sure she's actually SLE. I think the main reason people live long is genetics though - almost everyone in my family have lived past 100. Wouldn't surprise me if I did too.