The question of what to eat to be healthy has spawned a rash of often contradictory advice by "experts." In this audio lecture, sponsored by the Stanford Ethics and Society Program, NYU professor and author Marion Nestle offers simple advice that cuts through the confusion. She highlights the difference between "nutrients" and "food," and suggests how to bring "nutrition" back into the food realm. Her discussion forays into how agriculture and business interact to produce the foodstuffs on our shelves.