Kirstie Alley sits down with Dr. Oz to discuss her very public weight struggles and nothing is off-limits! She speaks candidly about everything from cocaine to body image. Learn what she sees when she looks back on her body over the years and why she regrets wearing a bikini on Oprah. Plus, get the tools that helped her turn her life around for good.

View Part 2 of Kirstie Alley: Confessions of a Yo-Yo Dieter.

Read more about the dangers of yo-yo dieting and how it damages your health.

Watch Kirstie Alley answer your questions from Facebook and Twitter in a web-exclusive video.

Watch as Dr. Oz and Kirstie Alley reveal the damage yo-yo dieting can do to your heart.

For more about Kirstie's weight loss visit

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.