Kellyann Petrucci, MS, ND, is a board-certified naturopathic physician, certified nutrition consultant, and the author of Dr. Kellyann’s Bone Broth Diet. A weight-loss and natural anti-aging transformation expert with a private practice, she is a concierge doctor for celebrities in New York City and Los Angeles.

Petrucci is a regular guest on television shows such as The Doctors and Dr. Oz, and national news programs. She is the driving force behind the website DrKellyann.com, and has authored six books, including Living Paleo for Dummies (one of the highest-selling Dummies books of all time). In addition, she is a regular contributor to the Huffington Post and MindBodyGreen and the creator of the 30 Day Reset Program, which helps people lose weight, regain their energy, and reverse the effects of aging.

One of the few practitioners in the United States certified in biological medicine by the esteemed Dr. Thomas Rau of the Paracelsus Klinik Lustmuhle in Switzerland, Petrucci did postgraduate work in Europe, studying naturopathic medicine in England and Switzerland. She teaches about the relationship between hormonal balance, mood, and how we can heal using food as medicine.