Look through the TIME magazine slideshow linked here. The photographs are from the book Hungry Planet, by Peter Menzel and Faith D’Aluisio. They traveled around the world and spoke with different families about what and how much they eat. Each photo depicts a family with one week’s worth of food purchases. Among the lessons Mr. Menzel learned from the project:
I think the most interesting thing that I learned that I think other people could benefit from was the family in Okinawa. And the reason we went to Okinawa was because it has the highest percentage of centenarians anywhere in the world. And the surprising thing is not so much what they’re eating–which is fairly healthy things like fish and soy–but it’s their attitude and it’s what their parents taught them as children. And they were told `Hara hachi bu,’ and that means only eat until you’re 80 percent full. And that’s not really what Western people are telling their kids to clean their plates and `Mange, mange,’ you know, make sure that you eat enough. It makes a lot of sense because your brain lags behind your stomach. And if you stop when you’re 80 percent full, that’s the point when you really have had enough and your body really is at a point where it’s got the right amount of food.
An interview with Menzel and D’Aluisio can be found here.