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; has for 19 years directed multidisciplinary, evidence based - behavioural weight management programs. He is the Medicazl 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 Obesity Canada (OC). David is a co-author of the Canadian Action Study. David is also a co-author of the Behavioural Treatment Chapter in 2020 Canadian Clinical Practice Guidelines for the treatment of Obesity in adults. David is the creator of the www.macklinmethod.com global obesity treatment training program.