Momentum and action: National Dietary Surveys of Australian adults (1983) and school children (1985) set the scene for government action (e.g.,; Nutrition Taskforce of the Better Health Commission (1987); National Food and Nutrition Policy (1992); National Dietary Guidelines for Australia (1991), for Children and Adolescents (1995) and Older Australian (1999); National Goals and Targets for Australia’s Health (1993); Strategic Intergovernmental Nutrition Alliance (SIGNAL), Eat Well Australia and the National Aboriginal and Torres Strait Islander Nutrition Strategy and Action Plan (2000-2010)). Key principles addressed environmental determinants – social justice, quality of the food supply, community participation and accountability, food and nutrition system and wider interaction, and ecologically sustainable development. In the late 1980’s, the Department of Health in Western Australia and New South Wales implemented social media campaigns to encourage consumption consistent with dietary guidelines. Deakin University’s Food and Nutrition Program (1991) ambitious intervention framework to improve public health nutrition to addressed determinants of dietary intake, nutrition status, and health outcomes. Addressing the food supply (e.g., availability, cost and composition), consumer characteristics as drivers of demand (e.g., knowledge, beliefs, values and attitudes) and other environmental influences (e.g., income, family, health services). In 2013, the increasing non-communicable disease attributable to diet led to the global International Network for Food and Obesity/NCDs Research, Monitoring and Action Support (INFORMAS). focussing on healthy food environments to reduce obesity. Specifically, the unhealthy food environment supply-side ‘push’ of energy-dense, nutrient-poor, widely available, relatively inexpensive and heavily promoted processed food products. Importantly, monitoring food environments, access, and sovereignty. Political amnesia: A potted history about the memory of politics and policymaking in public health nutrition in Australia with a focus on key lessons and turning points in addressing the environmental determinants of diet quality.