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

We all love a good cup of coffee to wake us up in the morning. But that routine drink may be doing good things for your health. Turns out, drinking coffee could help you do three big things: burn fat, lower your risk of type 2 diabetes, and boost your mood. Watch the video below to see how, plus three ways to spice up your coffee with adding calories!