Fixing obesity is going to require a change in our modern relationship with food. I'm hopeful that we begin to see a turnaround in this childhood obesity epidemic.

It's a bold and sweeping step that industry and childhood obesity advocates have decided to take together.

Once you avoid the things that accelerate aging like smoking, obesity, excessive alcohol consumption, and excessive sun exposure, you've done about as much as you can to influence your aging process.

Ageing is very rare. We only see it in humans and laboratory animals and in zoo animals and in our pets. Basically, organisms that are protected from the external world. Once you create that protection, you live long enough to see ageing.

The only control we have over the duration of our life is to shorten it, and we do that all the time.

If we do everything right, the best we can do is live out our potential with as little age-related disease and disability as possible.