1. United Nations, Department of Economic and Social Affairs, Population Division. World Population Prospects: The 2017 Revision, Key Findings and Advance Tables. Working Paper No. ESA/P/WP/248 (United Nations, 2017).
2. Flegal, K. M., Kruszon-Moran, D., Carroll, M. D., Fryar, C. D. & Ogden, C. L. Trends in obesity among adults in the United States, 2005 to 2014. JAMA 315, 2284–2291 (2016).
3. Johnson, N. B., Hayes, L. D., Brown, K., Hoo, E. C. & Ethier, K. A. CDC National Health Report: leading causes of morbidity and mortality and associated behavioral risk and protective factors—United States, 2005–2013. MMWR Suppl. 63, 3–27 (2014).
4. Hales, C. M., Carroll, M. D., Fryar, C. D. & Ogden, C. L. Prevalence of obesity among adults and youth: United States, 2015–2016. Centers for Disease Control and Prevention https://www.cdc.gov/nchs/data/databriefs/db288.pdf (2017). These are the most updated prevalence rates of the obesity epidemic in the United States.
5. Organisation for Economic Co-operation and Development. Obesity Update 2017. OECD www.oecd.org/health/obesity-update.htm (2017).