The last thing you ever want to do is extend the period of frailty and disability and make people unhealthy for a longer time period. So lifespan extension in and of itself should not be the goal of medicine, nor should it be the goal of public health, nor should it be the goal of aging science.

I'm not sure the least educated members of the population are missing out on the advances in medical technology as much as they are adopting harmful behavioral habits that shorten their life.

The way that we are going after ageing, I think, is a problem. The modern medical model is basically designed to attack one disease at a time. Independent of all other diseases and independent of the basic process of ageing itself.