Volumetrics DIet Fresh colorful vegetables and fruits Consistently rated as one of the best diets by U.S. News & World Report, Volumetrics was created by Barbara Rolls, Ph.D., a professor of nutrition at Penn State University. The strategy here is simple: Fill up on foods that provide the most nutrition for the least amount of calories. Foods are divided into four categories, from least energy-dense (fruits, non-starchy vegetables, broth-based soups) to most energy-dense (crackers, cookies, chocolate, nuts, and butter); dieters plan their meals to include as many of the lower-density foods as possible.
Hide player controls
Hide resume playing