Dr. Jeffery is a psychologist by training and has done research on the treatment and prevention of obesity for approximately 30 years. He has published over 315 peer-reviewed articles in the area and is widely recognized particularly as an expert in community approaches to obesity management. His work in this domain includes a number of large-scale studies directed toward assessing whether intervention efforts aimed at the population as a whole can be effective in achieving weight loss or prevention of weight gain. The studies included several projects in which attempts were made to reach the population with educational messages about diet and exercise behaviors for weight control via mass media, worksites, public health departments, and health care providers. More recently he has also been involved in several studies that have examined non-educational factors related to diet and exercise choice, such as food availability and price. In 2010, he was awarded an NIH Ruth L. Kirschstein-NRSA training grant in obesity prevention. Dr. Jeffery is the Director of the University of Minnesota Obesity Prevention Center (OPC), which was established in 2004 as part of the Healthy Foods, Healthy Lives Presidential Initiative.