Mitchell Davis makes sense of calories with noted food author and professor Dr. Marion Nestle on this week's episode of Taste Matters. Marion's latest book, "Why Calories Count", explores the essential measurement of energy in food and how it affects our nutrition and diets. Find out why tackling problems like obesity can be much simpler than it's made out to be and why portion size is to blame for most weight-related problems. This program was sponsored by Hearst Ranch.

"If you are gonna try to diet, you just have to eat less. There's really no other way to do it."

"Most people aren't active enough to work off the excess calories they consume."

--Marion Nestle on Taste Matters