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Age is the single largest risk factor for an enormous number of diseases. So if you can essentially postpone aging, then you can have beneficial effects on a whole wide range of disease.

The hope is that if we can increase youthfulness, we can postpone age-related diseases.

For healthy adult people, the really big thing we can foresee are ways of intervening in the ageing process, either by slowing or reversing it.

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.

We can't avoid age. However, we can avoid some aging. Continue to do things. Be active. Life is fantastic in the way it adjusts to demands; if you use your muscles and mind, they stay there much longer.

If you can slow the biological process of aging, even a minor slowdown in the rate at which we age yields improvements in virtually every condition of frailty and disability and mortality that we see at later ages.

Most people look at ageing as a disease. They do. They have prescriptions and places where you go to eradicate it.

Aging is not currently regarded as a disease, but researchers tend increasingly to view it as the common origin of conditions like insulin resistance or cardiovascular disease, whose incidence rises with age. In treating cell aging, we could prevent these diseases.

From my perspective, there's no reason to be afraid of aging, because if you age, you're lucky! The alternative is death.

There's no such thing as ageing gracefully. I don't meet people who want to get Alzheimer's disease, or who want to get cancer or arthritis or any of the other things that afflict the elderly. Ageing is bad for you, and we better just actually accept that.