New York Times bestselling author Dr. Jason Fung joins forces with naturopathic doctor Nadia Pateguana to offer methods to prevent and reverse PCOS through diet and intermittent fasting. Polycystic Ovary Syndrome (PCOS) is the most common reproductive disorder in the world, affecting an estimated eight to 20 percent of women of reproductive age, almost half of whom are unable to conceive. PCOS is also associated with increased risks of heart disease, ovarian and endometrial cancers, and type 2 diabetes. In this clearly written guide, backed by science and personal experience, Drs. Jason Fung and Nadia Brito Pateguana show: How to prevent and reverse PCOS with a low-carb, ketogenic diet and intermittent fasting. How the root cause of PCOS is excess insulin--and how to get rid of it. 50 recipes and a variety of meal plans for putting new knowledge into (delicious) practice.