Joel Fuhrman MD talks about diets that don't work, and nutrient density as the key to healthy eating.  To learn more about Dr. Fuhrman, visit him on his website at http://www.drfuhrman.com/

 One third of Americans are classified as obese—-and the number is growing. Let's get some insight into this expanding epidemic.

 Dr. Richard Johnson is professor of medicine at the University of Colorado, where he runs the kidney division and is in charge of transplantation and research in blood pressure. He has also written the best book on the market on the dangers of fructose called The Sugar Fix.