Dr Susan Jebb is Head of Nutrition and Health Research at the Medical Research CouncilHuman Nutrition Research centre in Cambridge. Susan is a nutrition scientist and a State Registered Dietitian and has a particular interest in the role of dietary factors in the aetiology and treatment of obesity and its related metabolic diseases. Susan is currently Chair of the UK Association for the Study of Obesity and is working with government, industry, health professionals and consumer groups to develop effective public health strategies to tackle obesity. She is also a member of the Joint Health Claims Initiative Expert Panel assessing nutrition-related health claims in the UK.