Ian has background training in biochemistry and nutrition and is currently Professor of Food Chain Nutrition and Director of the Institute for Food, Nutrition and Health at the University of Reading.

His research interests focus on food chain nutrition with emphasis on the relationship between consumption of animal-derived foods across the key life stages, nutrient supply and chronic disease risk with particular emphasis on vascular disease and dairy foods, saturated, trans and n-3 fatty acids.

His current work includes meta-analysis of prospective studies on the association between dairy food consumption and cardiometabolic diseases (CMD) and research on lipids and proteins in milk and dairy products and their influence on risk factors for CMD. Work also includes factors linked to primary production that for e.g. alter the fatty acid composition and concentrations of nutrients including iodine, selenium and vitamin D in foods. A study on the form of dietary vitamin D on vitamin D status is also ongoing.