David A. Macklin is a lecturer at the University of Toronto Faculty of Medicine and a University of Toronto trained family physician  David  has committed his career to the prevention and treatment of obesity; directing multidisciplinary, evidence based – behavioural weight management programs. He is the Medical Director of the Weight Management Program at the Medcan Clinic. He is also the Medical Director the Weight Management Program at the Toronto Mount Sinai Hospital High Risk/Special Pregnancy BMI unit.  He is a Science Committee member at  the Canadian Obesity Network (CON).    David is also co-author of the new 2019 Canadian Clinical Practice Guidelines for Weight Management behavioural treatment chapter.  David is also a co-author of the soon to be published Canadian Action Study.