Keywords: Adults (20-59 years), Behaviour Modification (e.g., provision of item/tool, incentives, goal setting), Chronic Diseases, Education / Awareness & Skill Development / Training, Health Care Setting, Meta-analysis, Mobile Phone, Obesity, Primary health care provider office (e.g., Public health nurse, dietitian, social worker), Seniors (60+ years), Social Support (e.g., counseling, case management, outreach programs)