There are a lot more people who seem to get to be over 100 these days.
I think it's all the preservatives in our body and also the breakthroughs in medicines. eg. Infant deaths are lower, we can transplant just about anything these days including faces (I want Kate Hudson's when she's done with it) etc.
I don't know if all the healthy lifestyle stuff is true...hell in 30 years we will probably just clone ourselves...though I feel sorry for all those people who believed in Cyrogenics....it ain't gonna happen :)