Obesity is an important public health problem that is taking epidemic proportions worldwide. Indeed, nearly 50% of Canadians are obese and their number has increased dramatically in the last 20 years. Direct costs of obesity added to those of sedentary represent nearly 5% of the health system's budget. Also, obesity is linked with multiple co-morbidities; furthermore, modest weight loss has significant impact on type 2 diabetes, blood pressure and even reduces mortality. The investigators group has implemented an interdisciplinary team that has demonstrated its effectiveness for obesity management. However, the majority of obese subjects should be treated by primary care physicians (PCPs) that often feel uncomfortable when faced with the management of obesity. The investigators have therefore developed a clinical preceptorship for PCPs; this continuing medical education (CME) activity aims at engaging PCPs in obesity/overweight management. The current research proposal is aimed at the development and implementation of an innovative, integrated, interdisciplinary obesity care management system involving both primary and secondary health care professionals.