Thursday, the FDA announced it was banning trans fats from the foods we consume, so I called upon Dr. Dean Ornish to join me on America Weekend to explain the repercussions of that decision. Will it change the taste? Will it raise prices? Why are there trans fats in our food in the first place if they're so dangerous? Dean has written several books about heart health, and advised both McDonald's and Pepsico on removing trans fats from their products in recent years.