Thirty-five years after the first dietary guidelines, how much do we really know about the science behind a healthy diet?
Is it All in Your Gut?
Is there a hidden cause of obesity? A professor at Stanford thinks the answer might lie with the 100 trillion microbes living in our bodies.
The Bliss Point
How did food companies get us to crave their products? They discovered the *bliss point.*
The Unexpected Science of Exercise
Does exercise really make you lose weight? One scientist went to Africa and found an unexpected answer.