Tom Clandinin’s outstanding contributions to nutritional science have improved the health of infants around the world, and pioneered a new field of study on the effects of dietary essential fatty acids in infant development. His groundbreaking science resulted in a fundamental shift in the understanding of the relationship between dietary fat and a wide variety of disease mechanisms encompassing diabetes, heart disease, childhood obesity and cancer. An internationally acclaimed leader in several areas of research, who is never afraid to relentlessly question existing dogma, his work has profoundly influenced not only scientific understanding but also public policy.