Yo-yo dieting is dangerous for more than just your waist line, it can damage your heart. Dr. Oz and Kirstie Alley demonstrate the dangers of weight cycling.
Read about the emotional triggers of yo-yo dieting.
Watch Kirstie Alley answer your questions from Facebook and Twitter in a web-exclusive video.
See Dr. Oz’s interview with America’s most famous yo-yo dieter: Kirstie Alley.
For more about Kirstie's weight loss visit KirstieAlley.com.