Lisa Young, PhD, RDN, CDN, is an internationally recognized nutritionist and portion control expert. She is an Adjunct Professor of Nutrition at New York University, author, international lecturer, registered dietitian nutritionist in private practice, and media consultant. As one of the leading experts on food portion sizes in the U.S., Dr. Young is the author of Finally Fully, Finally Thing: 30 Days to Permanent Weight Loss One Portion at a Time (Center Street, 2019) and The Portion Teller Plan: Eating, Cheating, and Losing Weight Permanently (Crown, 2006). Dr. Young has also authored peer-review research articles as well as popular features on portion size and served as an adviser to the NYC Department of Health and Mental Hygiene on its various portion-control initiatives.

Lisa Young, PhD, RDN, CDN, has no relevant disclosures to report. She has certified that no conflict of interest exists for this program. View our disclosure policy.