Genetic science has make huge leaps the last two decades. We have already discovered why we age, and we have also discovered the gene which is responsible for the reconstruction of the damaged cells. It is most likely that within the next two decades we will be able to slow down the aging process and dramatically increase our life expectancy. Until then, you can simply starve to death to live 30% longer.
Watch the following video in which professor Michio Kaku talks about aging