An in-depth look at the biological science and research studies behind Dr. Kellyann Petrucci’s diets and programs.
All About Collagen
Dr. Kellyann earned her nickname “The Queen of Collagen,” by proving the benefits of this incredible superfood through her patients’ amazing health transformations.
Your Guide To Mini-Fasting
Mini-fasting™, also known as intermittent fasting, helps support cell regeneration and gut health, and stops inflammation. It’s a powerful tool for weight loss and health transformations.
Your Bone Broth Resource
Bone Broth contains collagen, which helps your body burn fat. It helps beautify skin and hair, helps heal your gut, and detoxify your body.
Live Events & Media
Discover Dr. Kellyann’s conferences, press and media appearances, plus access Dr. Kellyann’s media kit.
Browse and learn about Dr. Kellyann’s NYT Bestseller Dr. Kellyann’s Bone Broth Diet, plus the cookbooks and paleo guides that have helped hundreds of thousands of people lose weight and get healthy.