This report, prepared for NRS81001, examines the Social Determinants of Health (SDOH) in the Australian context, particularly concerning Aboriginal and Torres Strait Islander (ATSI) communities. It identifies obesity as a National Health Priority Area and analyzes how SDOH, such as poor education, income, and access to healthcare, contribute to health disparities. The report then discusses the 'Eat Healthy, Drink Healthy and Live Healthy' campaign as a health promotion program designed to address obesity in Indigenous communities, detailing its interventions, outcomes, and impact on behavior change. It also explores the role of Primary Healthcare Services in addressing health inequalities within these communities. The report concludes by emphasizing the interconnectedness of SDOH, health outcomes, and the importance of culturally appropriate healthcare services in improving the health and well-being of Indigenous Australians. The report highlights the impact of factors like low income, lack of access to healthy foods, and limited health awareness on the prevalence of obesity, and the effectiveness of community-based health interventions in mitigating these challenges.