Avoid buying frozen dinners and processed foods, as they are often overloaded with salt.

No matter how old you are, no matter how much you weigh, you can still control the health of your body.

If you change your lifestyle, remember it's not a wind sprint, but it's a marathon you're embarked on, and you'll be able to stay there.

One way to fuel the brain to make more decisions is to feed it carbs. So as the day goes on, you start to crave more carbs - especially women, because women tend to make more of the day-to-day decisions in our lives than men.

I don't operate on smokers. I tell cigarette smokers that I can operate on you, I get paid the same. And you might even do well. But it's the wrong thing to do. So I refuse to operate on you until you stop smoking.

Much of eating is about customs and habits, and we've developed some unfortunate ones. Not enough families eat together. We eat in front of the TV while we're absorbed in a program. You know, the average person will eat up to 50 percent more food when distracted.

Our ancestors had to eat whenever food was around. And we're actually still hardwired the same way. The big difference is we don't have to hunt for our food. For us, "hunting" comes down to sliding the milk carton out of the way.