David Ludwig, a leader in the field of childhood obesity research and treatment, will speak at the University of Arkansas at noon Friday, April 15 in the Graduate Education Building auditorium. A morning time was previously announced for the talk.

Ludwig will talk about the science behind his book, Always Hungry? Conquer Cravings, Retrain Your Fat Cells & Lose Weight Permanently. The talk is free and open to the public. The U of A Bookstore will have copies of the book available for sale at 11:30 a.m., and Ludwig will be available to sign copies.

The event is sponsored by the College of Education and Health Professions and will also be streamed live and can be accessed by registering online.

Ludwig is a professor of pediatrics at Harvard Medical School and professor of nutrition at Harvard School of Public Health. He is on staff at Boston Children's Hospital and is founding director of the Optimal Weight for Life program at the hospital. It's one of the country's oldest and largest multidisciplinary clinics for the care of overweight children.

Ludwig also directs the New Balance Foundation Obesity Prevention Center. His research focuses on the effects of diet on hormones, metabolism and body weight. He is principal investigator on numerous grants from the National Institutes of Health, has published more than 150 scientific articles, and serves as contributing writer for Journal of the American Medical Association.

Always Hungry was No. 1 on the New York Times best seller list of food and fitness books in February. It is No. 9 on the list of health books for April.