I found his TED talk and listened it, very interesting.
A quote from TED site about Aubrey, "Aubrey de Grey, British researcher on aging, claims he has drawn a roadmap to defeat biological aging. He provocatively proposes that the first human beings who will live to 1,000 years old have already been born."
So he is working about slowing the aging process.
whate'er you talking about man. we have better food and medicine than ever before. it's totally doable, just not today.
They are not trying to make you live 1000 years and 920 of it old like hell.
They are trying to expand being young. Like you are 100 years old but not "old"
Otherwise, it would be meaningless.