1. National Center for Health Statistics. Health, United States, 2007: With Chartbook on Trends in the Health of Americans. Hyattsville, MD, 2007.
2. Office for National Statistics. Population ageing in the united kingdom, its constituent countries and the european union.Off. Natl. Stat . 2012 http://www.ons.gov.uk/ons/rel/mortality-ageing/focus-on-older-people/population-ageing-in-the-united-kingdom-and-europe/rpt-age-uk-eu.html#tab-Associated-links (Accessed 14 Nov 2012).
3. Fakhouri TH , Ogden CL , Carroll MD . Prevalence of obesity among older adults in the United States, 2007-2010. NCHS data brief, no 106 . Hyattsville, MD: National Center for Health Statistics, 2012. http://www.cdc.gov/nchs/data/databriefs/db106.htm#ref1 (Accessed 14 Nov 2012).
4. Health & Social Care Information Centre. Health Survey for England - 2010: Trend tables. 2010. http://www.hscic.gov.uk/pubs/hse10trends (Accessed 21 Jul 2014).
5. Prevalence of Obesity and Trends in the Distribution of Body Mass Index Among US Adults, 1999-2010