Historic population prevalence data (1980-2007): AIHW analysis of the 1980, 1983 and 1989 Risk Factor Prevalence Surveys, 1995 National Nutrition Survey and 1999–2000 Australian Diabetes, Obesity and Lifestyle (AusDiab) Study & Australian Bureau of Statistics, Department of Health and Family Services. National health Survey: summary of results 2007-08. Canberra: ABS/DHFS, 2009. Adults (25-65 1980, 1983, 1989; 18+ 1995; 25+ 2000; 18+ 2007). All prevalence data based on measured height and weight. State distribution data based on unpublished analyses of the population survey series.

Population projections (2010-2025): Walls & Magliano, 2011 H Walls, D Magliano, C Stevenson, K Backholer, H Mannan, J Shaw, A Peeters. Projected progression of the prevalence of obesity in Australia. Obesity 2012 Apr;20(4):872-8. Projections represent national, not state- and territory-specific information.

Projected rates of obesity represent a decrease in daily energy intake (less food and drink) or an increase in daily energy expenditure (more exercise) of 600kj in those who would have otherwise gained weight. This roughly equates to one less soft drink or glass of wine per day, or the addition of a 30-45 minute moderate-intensity walk. This is a preventive, not a weight loss, initiative. Based on the AusDiab data model. Analysis by Kathryn Backholer, Baker IDI, using these methods. The relationship between change in energy intake or expenditure and weight was based on this study.