At a time when 20% of people in the US go to bed hungry each night and almost 50% of the world's population is malnourished, choosing to eat more plant-based foods and less red meat is better for all of us-ourselves, our loved ones, and our planet.

I'm a big admirer of Walter Willett's work. I think he's done some really important research. He and I agree on most things.

The need for love and intimacy is a fundamental human need, as primal as the need for food, water, and air.

When most people think about my work, they think about diet. To me, diet has always been the least interesting part of it.

People who are lonely and depressed are three to 10 times more likely to get sick and die prematurely than those who have a strong sense of love and community. I don’t know any other single factor that affects our health - for better and for worse - to such a strong degree.

When I use the word spirituality, I don't necessarily mean religion; I mean whatever it is that helps you feel connected to something that is larger than yourself.

Think about it: Heart disease and diabetes, which account for more deaths in the U.S. and worldwide than everything else combined, are completely preventable by making comprehensive lifestyle changes. Without drugs or surgery.