Obesity-related research began in the CHEO Research Institute with a part-time researcher in 2001 and shortly thereafter with the hiring of an endocrinologist with a research interest in childhood obesity. This research direction was initiated in response to the escalating obesity crisis and the increasing complexity of related co-morbidities. The Healthy Active Living and Obesity Research Group (HALO) was established in 2007 and rapid growth in the group occurred since that time. In 2010, the new HALO logo was developed (as can be seen on the cover of this annual report). The HALO Wall of Fame (a legacy of staff, volunteers and visitors who have been a part of HALO since its inception) was also unveiled in November 2010 and can be found in the HALO laboratory.