A UK Registered Nutritionist, until recently the Director of the Institute for Food, Nutrition and Health at the University of Reading UK and now Emeritus Professor of Nutrition. He is also a staff member of the human nutrition PhD programme in the University of Milan. His research has focused on the health consequences of consuming animal-derived foods with a focus on the functionality of dairy food matrix at key life stages. Current work includes the associations between plasma branched chain amino acids and type 2 diabetes risk and on vitamin D status and immune function in ethnic minority groups.