Jay is a recognized authority on low-carbohydrate ketogenic diets for the treatment of obesity, metabolic syndrome and type 2 diabetes. His interest began with a research position at the UBC Faculty of Medicine, where he studied the effectiveness of a traditional-style diet for obesity, metabolic syndrome and type 2 diabetes in the Namgis First Nation. The study was the subject of the Canadian Broadcasting Company documentary, “My Big Fat Diet. Since 1996, Dr. Wortman has served in senior management positions in the First Nations and Inuit Health Branch of Health Canada in Ottawa and Vancouver. He currently practices in West Vancouver.