The term bariatrics was coined around 1965, from the Greek root bar- ("weight" as in barometer), suffix -iatr ("treatment," as in pediatrics), and suffix -ic ("pertaining to"). The field encompasses dieting, exercise and behavioral therapy approaches to weight loss, as well as pharmacotherapy and surgery. The term is also used in the medical field as somewhat of a euphemism to refer to people of larger sizes without regard to their participation in any treatment specific to weight loss, such as medical supply catalogs featuring larger hospital gowns and hospital beds referred to as "bariatric".
Being overweight or obese are both rising medical problems. There are many detrimental health effects of obesity: Individuals with a BMI (Body Mass Index) exceeding a healthy range have a much greater risk of medical issues. These include heart disease, diabetes mellitus, many types of cancer, asthma, obstructive sleep apnea, and chronic musculoskeletal problems. There is also a focus on the correlation between obesity and mortality.
Overweight and obese people, including children, may find it difficult to lose weight on their own. It is common for dieters to have tried fad diets only to find that they gain weight, or return to their original weight, after ceasing the diet. Some improvement in patient psychological health is noted after bariatric surgery. It should also be noted that 51% of bariatric surgery candidates report a history of mental illness, specifically depression, as well as being prescribed at least one psychotropic medication at the time of their surgery candidacy. 
Methods of treatment
Although diet, exercise, behavior therapy and anti-obesity drugs are first-line treatment, medical therapy for severe obesity has limited short-term success and very poor long-term success. Weight loss surgery generally results in greater weight loss than conventional treatment, and leads to improvements in quality of life and obesity related diseases such as hypertension and diabetes mellitus. The combination of approaches used may be tailored to each patient. Bariatric treatments in youth must be considered with great caution and with other conditions that may not have to be considered in adults.
- Obesity, Childhood obesity
- Classification of obesity, Classification of childhood obesity
- Epidemiology of obesity, Epidemiology of childhood obesity
- Obesity and walking
- Social stigma of obesity
- Body fat percentage
- Steatosis (also called fatty change, fatty degeneration, or adipose degeneration)
- Subcutaneous fat
- Torpy JM (2005). "Bariatric Surgery". 294 (15). JAMA. doi:10.1001/jama.294.15.1986. Retrieved 10 Sep 2020. Cite journal requires
- Dictionary.com, based on Random House Unabridged Dictionary, Random House (2006):  Retrieved 15 April 2006
- Reynolds K, He J (2005). "Epidemiology of the metabolic syndrome". Am J Med Sci. 330 (6): 273–9. doi:10.1097/00000441-200512000-00004. PMID 16355011.
- Hedley AA, Ogden CL, Johnson CL, et al. (2004). "Prevalence of overweight and obesity among US children, adolescents, and adults, 1999–2002". JAMA. 291 (23): 2847–50. doi:10.1001/jama.291.23.2847. PMID 15199035.
- WHO factsheet on obesity Archived May 18, 2006, at the Wayback Machine
- Bray, George A. (2004), "Medical Consequences of Obesity", Journal of Clinical Endocrinology & Metabolism, 89 (6), pp. 2583–2589, doi:10.1210/jc.2004-0535, PMID 15181027
- Gregg, Edward W.; Cheng, Yiling J.; Cadwell, Betsy L.; Imperatore, Ciuseppina; Williams, Desmond E.; Flegal, Katherine M.; Narayan, K. M. Venkat; Williamson, David F. (2005), "Secular Trends in Cardiovascular Disease Risk Factors According to Body Mass Index in U.S. Adults", Obstetrical & Gynecological Survey, 60 (10), pp. 660–661, doi:10.1097/01.ogx.0000180862.46088.0d
- Flegal KM, Graubard BI, Williamson DF, Gail MH (2005). "Excess deaths associated with underweight, overweight, and obesity". JAMA. 293 (15): 1861–7. doi:10.1001/jama.293.15.1861. PMID 15840860.
- Bagozzi, Richard P.; Moore, David J.; Leone, Luigi (2004), "Self-Control and the Self-Regulation of Dieting Decisions: the Role of Prefactual Attitudes, Subjective Norms, and Resistance to Temptation", Basic and Applied Social Psychology, 26 (2–3), pp. 199–213, doi:10.1207/s15324834basp2602&3_7
- Ikeda, J.; Hayes, D; Satter, E; Parham, ES; Kratina, K; Woolsey, M; Lowey, M; Tribole, E (1999), "A Commentary on the New Obesity Guidelines from NIH", Journal of the American Dietetic Association, 99 (8), pp. 918–9, doi:10.1016/S0002-8223(99)00218-7, PMID 10450304
- Kubik, Jeremy F.; Gill, Richdeep S.; Laffin, Michael; Karmali, Shahzeer (2013). "The Impact of Bariatric Surgery on Psychological Health". Journal of Obesity. 2013: 1–5. doi:10.1155/2013/837989. PMC 3625597. PMID 23606952.
- Hensel J, Selvadurai M, Anvari M, et al. Mental illnessand psychotropic medication use among people assessedfor bariatric surgery in Ontario, Canada. Obes Surg.2016;26:1531–1536.
- Ward H.B., Yudkoff B.L., Fromson J.A. Lurasidone malabsorption following bariatric surgery: A case report. J. Psychiatr. Pract.. 2019;25(4):313-317. doi:10.1097/PRA.0000000000000402
- Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults, The Evidence Report. NIH Publication NO. 98-4083, September 1998. NATIONAL INSTITUTES OF HEALTH National Heart, Lung, and Blood Institute in cooperation with The National Institute of Diabetes and Digestive and Kidney diseases. Archived June 12, 2006, at the Wayback Machine
- "Gastrointestinal surgery for severe obesity: National Institutes of Health Consensus Development Conference Statement". Am J Clin Nutr. 55 (S2): 615S–619S. 1992. doi:10.1093/ajcn/55.2.615s. PMID 1733140.
- Colquitt J, Clegg A, Sidhu M, Royle P (2003). "Surgery for morbid obesity". Cochrane Database Syst Rev. 2 (2): CD003641. doi:10.1002/14651858.CD003641. PMID 12804481.
- Gerwecka, C.A.; Krenkela, J.; Molinia, M.; Frattingera, S.; Plodkowskia, R.; Jeora, S. St (2007), "Tailoring Information to the Needs of the Individual Patient Sustains Interest in the Weight Loss Program and Increases Compliance: A Pilot Project", Journal of the American Dietetic Association, 107 (8), pp. A83, doi:10.1016/j.jada.2007.05.212
|Wikimedia Commons has media related to Bariatrics.|
- VIDEO: How Bariatrics Has Changed Our Understanding of Type II Diabetes Daniel McKenna speaks at the University of Wisconsin School of Medicine and Public Health, 2008.
- MedLinePlus Portal on Weight Loss Surgery