The 'find it, fix it 'model of medicine doesn't work any more. The U.S. healthcare system is bankrupting the country, bankrolling the insurance companies and exhausting healthcare staff. And despite all that, we are ranked 50th in the world for life expectancy.

Some people who are obsessed with food become gourmet chefs. Others become eating disorders.

If we can reach populations in developing countries and help them understand the value of their indigenous diet and lifestyles rather than copying ours, perhaps we can reverse the exponential rise in cardiovascular disease that is plaguing them.

The important thing is to bring people with Parkinson's into our world and for the public to have a real understanding of it, as they've beginning to have with autism.

I think all Americans believe in human rights. And health is an often overlooked aspect of basic human rights. And it's one that's easily corrected. The reason I say that is that many of the diseases that we treat around the world, I knew when I was a child. My mother was a registered nurse. And they no longer exist in our country.

As has been well documented, I smoked pot as a kid, and I view it as a bad habit and a vice, not very different from the cigarettes that I smoked as a young person up through a big chunk of my adult life. I don't think it is more dangerous than alcohol.