Assoc Prof Krebs is an Endocrinologist with a particular interest in obesity and diabetes. He trained in Endocrinology at Wellington Hospital in New Zealand and then did his doctorate with the Medical Research Council - Human Nutrition Research unit in Cambridge England. His thesis was on the impact of dietary factors on obesity and insulin resistance. Assoc Prof Krebs returned to New Zealand in 2002 to take up a consultant Endocrinology post at Wellington Hospital, where he is Clinical Leader of Endocrinology and Diabetes. He is also an Assoc Professor with the University of Otago, and previously the Director of the Clinical Research Diploma at Victoria University. As well as clinical and teaching activities, Assoc Prof Krebs maintains active research interests in the area of obesity and diabetes, with a focus on nutritional aspects, bariatric surgery and diabetes service delivery.