KELLYANN PETRUCCI, MS, ND, is a board-certified naturopathic physician, certified nutrition consultant, and the New York Times bestselling author of Dr. Kellyann’s Bone Broth Diet. She is also a concierge doctor for celebrities in Los Angeles and New York and is featured on the public television special 21 Days to a Slimmer, Younger You. Dr. Petrucci is a regular guest on television shows including The Doctors, and Dr. Oz, and national news programs.

She is one of the few practitioners in the United States certified in biological medicine by the Paracelsus Klinik Lustnuhle AG in Switzerland. She lives in Bucks County, PA.