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Prevalence of childhood obesity has increased dramatically worldwide. A Lancet article published in 2010 that the prevalence of childhood obesity during the past two to three decades, much like the United States, has increased in most other industrialized nations, excluding Russia and Poland.〔Han, J. C., D. A. Lawlor, and S. Y. Kimm. 2010. Childhood obesity Lancet 375 (9727) (May 15): 1737-48.〕 Between the early 1970s and late 1990s, prevalence of childhood obesity doubled or tripled in Australia, Brazil, Canada, Chile, Finland, France, Germany, Greece, Japan, the UK, and the USA.〔 A 2010 article from the American Journal of Clinical Nutrition analyzed global prevalence from 144 countries in preschool children (less than 5 years old).〔de Onis, M., M. Blossner, and E. Borghi. 2010. Global prevalence and trends of overweight and obesity among preschool children The American Journal of Clinical Nutrition 92 (5) (Nov): 1257-64.〕 Cross-sectional surveys from 144 countries were used and overweight and obesity were defined as preschool children with values >3SDs from the mean.〔 They found an estimated 42 million obese children under the age of five in the world of which close to 35 million lived in developing countries.11 Additional findings included worldwide prevalence of childhood overweight and obesity increasing from 4.2% (95% CI: 3.2%, 5.2%) in 1990 to 6.7% (95% CI: 5.6%, 7.7%) in 2010 and expecting to rise to 9.1% (95% CI: 7.3%, 10.9%), an estimated 60 million overweight and obese children in 2020.〔 ==United States== The National Survey of Children's Health (NSCH) has facilitated estimation of childhood obesity rates at state levels and comparison of geographic differences in social and behavioral factors. In the United States, 17% of children and teenagers in the United States are considered obese (BMI ≥95th percentile of the sex specific 2000 CDC growth charts).〔Obesity and overweight for professionals: Childhood: Basics | DNPAO | CDC (11/26/2011 2011 ). Available from http://www.cdc.gov/obesity/childhood/basics.html (accessed 11/26/2011).〕 Prevalence has remained high over the past three decades across most age, sex, racial/ethnic, and socioeconomic groups, and represents a three-fold increase from one generation ago and is expected to continue rising.〔Orsi, C. M., D. E. Hale, and J. L. Lynch. 2010. Pediatric obesity epidemiology Current Opinion in Endocrinology, Diabetes, and Obesity (Dec 13), www.refworks.com.〕〔Arch pediatr adolesc med-- changes in state-specific childhood obesity and overweight prevalence in the united states from 2003 to 2007, july 2010, singh et al. 164 (7): 598 (11/30/2011 2011 ). Available from http://archpedi.ama-assn.org/cgi/content/full/164/7/598 (accessed 11/30/2011).〕 Prevalence of pediatric obesity also varies with state. The highest rates of childhood obesity are found in the southeastern states of which Mississippi was found to have the highest rate of overweight/obese children, 44.5%/21.9% respectively.〔Borghi, E., M. de Onis, C. Garza, J. Van den Broeck, E. A. Frongillo, L. Grummer-Strawn, S. Van Buuren, et al. 2006; 2005. Construction of the world health organization child growth standards: Selection of methods for attained growth curves Statistics in Medicine 25 (2): 247 From 2003-2007, there was a twofold increase in states reporting prevalence of pediatric obesity greater than or equal to 18%.7 Oregon was the only state showing decline from 2003 to 2007 (decline by 32%), and using children in Oregon as a reference group, obesity in children in Illinois, Tennessee, Kentucky, West Virginia, Georgia, and Kansas has doubled.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Epidemiology of childhood obesity」の詳細全文を読む スポンサード リンク
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