Overweight in adults is defined as a body mass index (BMI) greater than or equal to 25. Obesity in adults is defined as having a BMI greater than or equal to 30. In children, being overweight or obese is based on being above normal ranges on growth charts. Being overweight or obese occurs when the amount of calories you take in is consistently greater than the number of calories you use during activity and basic bodily functions.
According to the World Health Organization (WHO), there are over 1.4 billion overweight adults and about 500 million obese adults worldwide. And these numbers are expected to rise. In the US, an estimated 70% of adults are either overweight or obese. American children and teens are also affected. An estimated 17% of children and young adults aged 2-19 are obese.
Being obese can increase your risk of early death and shorten life expectancy.
Other complications of untreated obesity include:
Complications of obesity. EBSCO DynaMed website. Available at:
http://www.ebscohost.com/dynamed/what.php. Updated July 25, 2012. Accessed August 28, 2012. Updated February 15, 2013. Accessed March 20, 2013.
Snow V, Barry P, Fitteman N, Qaseem A et al: Pharmacologic and Surgical Management of Obesity in Primary Care: A Clinical Practice Guideline from the American College of Physicians.
Ann Intern Med. 2005;142:525-31.
Ogden CL, Carroll MD, Kit BK, et al. Prevalence of obesity and trends in body mass index among US children and adolescents, 1999-2010.
JAMA. 2012;307(5):483-490.
9/30/2008 DynaMed's Systematic Literature Surveillance
DynaMed's Systematic Literature Surveillance: Samuels-Kalow ME, Funai EF, Buhimschi C, et al. Prepregnancy body mass index, hypertensive disorders of pregnancy, and long-term maternal mortality.
Am J Obstet Gynecol. 2007;197:490.e1-6. Epub 2007 Aug 21.
12/2/2008 DynaMed's Systematic Literature Surveillance
DynaMed's Systematic Literature Surveillance: Pischon T, Boeing H, Hoffmann K, et al. General and abdominal adiposity and risk of death in Europe.
N Engl J Med. 2008;359:2105-2120.
2/5/2009 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed/what.php: Subak L, Wing R, Smith West D, et al. Weight loss to treat urinary incontinence in overweight and obese women.
N Engl J Med. 2009;360:481-490.
4/16/2009 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed/what.php: Neovius M, Sundström J, Rasmussen F. Combined effects of overweight and smoking in late adolescence on subsequent mortality: nationwide cohort study.
BMJ. 2009 Feb 24;338:b496.
10/16/2009 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed/what.php: Krul M, van der Wouden JC, Schellevis FG, van Suijlekom-Smit LW, Koes BW. Musculoskeletal problems in overweight and obese children.
Ann Fam Med. 2009;7:352-356.
1/15/2010 DynaMed's Systematic Literature Surveillance
DynaMed's Systematic Literature Surveillance: Shiri R, Karppinen J, Leino-Arjas P, Solovieva S, Viikari-Juntura E. The association between obesity and low back pain: a meta-analysis.
Am J Epidemiol. 2010;171(2):135-54.
1/29/2010 DynaMed's Systematic Literature Surveillance
DynaMed's Systematic Literature Surveillance: Kuk JL, Ardern CI. Influence of age on the association between various measures of obesity and all-cause mortality.
J Am Geriatr Soc. 2009 Sep 15.
Last reviewed February 2013 by Brian Randall, MD
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