People say their weight is genetic. But it turns out that people who are overweight don't just have overweight kids. They also have overweight pets. That's not genetic.

At the end of the day, sleep is a barometer of your emotional health. And so if you're not in the right place where you need to be, then you're going to have voices keeping you up at night because you have to work through those issues.

Here's the number one reason Americans are heavy: The brain, very smartly, wants nutrition. But the average American is not eating nutrients; he or she is eating empty calories. So you finish that 2,000 calories and your brain says, Keep going until you get nutrients.

That's how most men connect - in bed. The physical connection is important because it reinforces the emotional one.

What we have now is doctors who are actually better technically at what they're doing in their specialty than 30 or 40 years ago, but we lost the relationship, when the doctor would look people in the eye and say, 'I care about you. We can do this together.'

Sweeteners, which can be up to 300 times sweeter than natural sugar, are known to increase appetite and result in overeating. Be on the lookout for artificial sweeteners, and when possible, steer clear of them.

I think I'm a better doctor than I am a husband. I give myself a good grade as a doctor, then the next best grade as a father, and the worst grade as a husband.