Keywords: Addiction/Substance Use, Adolescents (13-19 years), Adults (20-64 years), Advocacy, Behaviour Modification (e.g., provision of item/tool, incentives, goal setting), Cancer, Chronic Diseases, Communicable Disease/Infection, Community, Dental Health, Education / Awareness & Skill Development / Training, Grade school aged (5-12 years), Meta-analysis, Nutrition, Obesity, Physical Activity, Seniors (60+ years), Sexual Health (e.g., pregnancy prevention, family planning, sexual behaviour), Sexually Transmitted Infections (STIs), Smoking Cessation/Tobacco Use