Fasting has been used for thousands of years and is considered one of the oldest therapies in medicine, to help heal and prevent disease. But what is the best plan for your body - a one-day fast? multiple days? A water fast?

Dr. Alan Goldhamer is here to end all that confusion. He talks with Dr. Friedman about how you're already fasting, fasting vs starving, finding the best fasting length for your goals, and what's the deal with the sugars in fruits?

Dr. Goldhamer is the founder of TrueNorth Health Center, a state-of-the-art facility that provides medical and chiropractic services, psychotherapy, and counseling, as well as massage and bodywork. He is also director of the Center's groundbreaking residential health education program.