Management of obesity can include lifestyle changes, medications, or surgery. Although many studies have sought effective interventions, there is currently no evidence-based, well-defined, and efficient intervention to prevent obesity.[1]
Treatment for obesity often consists of weight loss via healthy nutrition and increasing physical exercise.[2][3][4][5] A 2007 review concluded that certain subgroups, such as those with type 2 diabetes and women who undergo weight loss, show long-term benefits in all-cause mortality, while long‐term outcomes for men are "not clear and need further investigation."[6]
The most effective treatment for obesity is bariatric surgery.[7] Surgery for severe obesity is associated with long-term weight loss and decreased overall mortality. One study found a weight loss of between 14% and 25% (depending on the type of procedure performed) at 10years, and a 29% reduction in all cause mortality when compared to standard weight loss measures.[8] Another study also found reduced mortality in those who underwent bariatric surgery for severe obesity.[9]
In June 2021, the US Food and Drug Administration (FDA) approved semaglutide injection sold under the brand name Wegovy for long-term weight management in adults. It is associated with a loss of 6-12% body weight along with mild gastrointestinal side effects.[10][11]
Another medication, orlistat, is widely available and approved for long-term use. Its use produces modest weight loss, with an average of 2.9kg (6.4lb) at 1 to 4years, but there is little information on how these medications affect longer-term complications of obesity.[12][13][needs update] Its use is associated with high rates of gastrointestinal side effects.[13]
Diet programs can produce short-term weight loss and, to a lesser extent, over the long-term. Greater weight loss results, including amongst underserved populations, are achieved when proper nutrition is regularly combined with physical exercise and counseling.[4][12][14][15][16] Dietary and lifestyle changes are effective in limiting excessive weight gain in pregnancy and improve outcomes for both the mother and the child.[17]
Diets to promote weight loss can be divided into four categories: low-fat, low-carbohydrate, low-calorie, and very low calorie.[20][bettersourceneeded] Many dietary patterns are effective.[4] A meta-analysis of six randomized controlled trials found no difference between three of the main diet types (low calorie, low carbohydrate and low fat), with a 2–4 kilograms (4.4–8.8lb) weight loss in all studies.[20] At two years these three methods resulted in similar weight loss irrespective of the macronutrients emphasized.[21] High protein diets do not appear to make any difference.[22] A diet high in added sugars such as those in soft drinks increases weight.[23] There is evidence that dieting alone can be effective for weight loss and improving health for obese individuals.[4][12] However, a large study of adults found that obesity was associated with differences in brain structure, largely due to shared genetic factors, suggesting that interventions for obesity should not focus solely on energy content, but also take into account the neurobehavioral profile that obesity is genetically associated with.[24]
With use, muscles consume energy derived from both fat and glycogen. Due to the large size of leg muscles, walking, running and cycling are the most effective means of exercise to reduce body fat.[26] Exercise affects macronutrient balance. During moderate exercise, equivalent to a brisk walk, there is a shift to greater use of fat as a fuel.[27][28] To maintain health, the American Heart Association recommends a minimum of 30 minutes of moderate exercise at least 5 days a week.
The Cochrane Collaboration found that exercising alone led to limited weight loss. In combination with diet, however, it resulted in a 1kilogram weight loss over dieting alone. A 1.5 kilograms (3.3 pounds) loss was observed with a greater degree of exercise.[29] Even though exercise as carried out in the general population has only modest effects, a dose response curve is found and very intense exercise can lead to substantial weight loss. During 20weeks of basic military training with no dietary restriction, obese military recruits lost 12.5kg (28lb).[30] High levels of physical activity seem to be necessary to maintain weight loss.[31] A pedometer appears useful for motivation. Over an average of 18-weeks of use, physical activity increased by 27% resulting in a 0.38 decrease in BMI.[32]
Signs that encourage the use of stairs as well as community campaigns have been shown to be effective in increasing exercise in a population.[33] The city of Bogota, Colombia, for example, blocks off 113 kilometers (70mi) of roads every Sunday and on holidays to make it easier for its citizens to get exercise. These pedestrian zones are part of an effort to combat chronic diseases, including obesity.[34]
In an effort to combat the issue, a primary school in Australia instituted a standing classroom in 2013.[35]
There is evidence that exercise alone is not sufficient to produce meaningful weight loss, but combining dieting and exercise provide the greatest health benefits and weight loss on the long term.[4][12]
Weight loss programs
Weight loss programs involve lifestyle changes including diet modifications, physical activity and behavior therapy. This may involve eating smaller meals, cutting down on certain types of food and making a conscious effort to exercise more. These programs also enable people to connect with a group of others who are attempting to lose weight, in the hopes that participants will form mutually motivating and encouraging relationships.[36] Since 2013, the United States guidelines recommend treating obesity as a disease and actively treat obese people for weight loss.[4]
A number of popular programs exist including Weight Watchers, Overeaters Anonymous and Jenny Craig. These appear to provide modest weight loss (2.9kg; 6.4lb) over dieting on one's own (0.2kg; 0.44lb) over a two-year period,[12][37][38][39][40] similarly to non-commercial diets.[4][12] As of 2005, there was insufficient scientific evidence to determine whether Internet-based programs produce effective weight loss.[41] The Chinese government has introduced a number of "fat farms" where obese children go for reinforced exercise and has passed a law which requires students to exercise or play sports for an hour a day at school (see Obesity in China).[42][43]
In a structured setting with a trained therapist, these interventions produce an average weight loss of up to 8kg in 6 months to 1 year,[4] and 67% of people who lost greater than 10% of their body mass maintained or continued to lose weight one year later.[44] There is a gradual weight regain after the first year of about 1 to 2kg per year, but on the long-term this still results in weight loss.[4] Risk factors for cardiovascular disease and for diabetes are reduced for several years after taking part in a weight management programme, even if people regained weight.[45][46]
Attending group meetings for weight reduction programmes rather than receiving one-on-one support may increase the likelihood that obese people will lose weight. Those who participated in groups had more treatment time and were more likely to lose enough weight to improve their health. Study authors suggested that one explanation for the difference is that group participants spent more time with the clinician (or whoever delivered the programme) than those receiving one-on-one support.[47][48]
Comprehensive diet programs, providing counseling, targets for calorie intake and exercise, may be more efficient than dieting without guidance ("self-help"),[12][49][50] although the evidence is very limited.[51] Following comprehensive lifestyle modifications, the average maintained weight loss is more than 3kg (6.6lb) or 3% of total body mass, and could be sustained for five years,[15] and up to 20% of the individuals maintain a weight loss of at least 10% (average of 33kg).[14] There is some evidence that fast weight loss produce greater long-term weight loss than gradual weight loss.[12][15] Moderate on-site comprehensive lifestyle changes produce a greater weight loss than usual care, of 2 to 4kg on average in 6 to 12 months.[4] High-intensity comprehensive programs usually yield more weight loss than moderate or low-intensity, with about 35% to 60% of overweight individuals maintaining more than 5kg weight loss after 2 years.[4]
The NICE devised a set of essential criteria to be met by commercial weight management organizations to be approved.[52]
The Transtheoretical Model (TTM) has been used as a framework to assist the design of lifestyle modification programmes, including weight management. A systematic review found that there is insufficient evidence to draw conclusions regarding the effects of TTM-based programs targeting weight loss that included dietary or physical activity interventions, or both (and also combined with other interventions), on sustainable weight loss (one year or longer) in overweight and obese adults. However, very low quality evidence points that this approach may induce positive changes in physical activity and dietary habits, such as increased in exercise duration and frequency, improvement in fruits and vegetables consumption, and reduced dietary fat intake.[53]
Orlistat reduces intestinal fat absorption by inhibiting pancreatic lipase. Over the longer term, average weight loss on orlistat is 2.9kg (6.4lb). It leads to a reduced incidence of diabetes, and has some effect on cholesterol. However, there is little information on how it affects the longer-term complications or outcomes of obesity.[13]
The usefulness of certain drugs depends upon the comorbidities present. Metformin is preferred in overweight diabetics and for those gaining weight because taking clozapine for schizophrenia, as it may lead to mild weight loss in comparison to sulfonylureas or insulin.[60][61] The thiazolidinediones, on the other hand, may cause weight gain, but decrease central obesity.[62] Diabetics also achieve modest weight loss with fluoxetine and orlistat over 12–57weeks.[63]
Rimonabant (Acomplia), another drug, had been withdrawn from the market. It worked via a specific blockade of the endocannabinoid system. It has been developed from the knowledge that cannabis smokers often experience hunger, which is often referred to as "the munchies". It had been approved in Europe for the treatment of obesity but has not received approval in the United States or Canada due to safety concerns.[64][65]European Medicines Agency in October 2008 recommended the suspension of the sale of rimonabant as the risk seem to be greater than the benefits.[66]
Sibutramine (Meridia), which acts in the brain to inhibit deactivation of the neurotransmitters, thereby decreasing appetite was withdrawn from the UK market in January 2010 and United States and Canadian markets in October 2010 due to cardiovascular concerns.[56][67][68] In 2010 it was found that sibutramine increases the risk of heart attacks and strokes in people with a history of cardiovascular disease.[69][70]
Recombinant human leptin is very effective in those with obesity due to congenital complete leptin deficiency via decreasing energy intake and possibly increases energy expenditure. This condition is, however, rare and this treatment is not effective for inducing weight loss in the majority of people with obesity. It is being investigated to determine whether or not it helps with weight loss maintenance.[73]
Though hypothesized that supplementation of vitamin D may be an effective treatment for obesity, studies do not support this.[74] There is also no strong evidence to recommend herbal medicines for weight loss.[75]
Bariatric surgery ("weight loss surgery") is the use of surgical intervention in the treatment of obesity. As every operation may have complications, surgery is only recommended for severely obese people (BMI>40) who have failed to lose weight following dietary modification and pharmacological treatment. Weight loss surgery relies on various principles: the two most common approaches are reducing the volume of the stomach (e.g. by adjustable gastric banding and vertical banded gastroplasty), which produces an earlier sense of satiation, and reducing the length of bowel that comes into contact with food (e.g. by gastric bypass surgery or endoscopic duodenal-jejunal bypass surgery[76][77]), which directly reduces absorption. Band surgery is reversible, while bowel shortening operations are not. Some procedures can be performed laparoscopically. Complications from weight loss surgery are frequent.[78]
Surgery for severe obesity is associated with long-term weight loss and decreased overall mortality. One study found a weight loss of between 14% and 25% (depending on the type of procedure performed) at 10years, and a 29% reduction in all cause mortality when compared to standard weight loss measures.[8] A marked decrease in the risk of diabetes mellitus, cardiovascular disease and cancer has also been found after bariatric surgery.[8][79] Marked weight loss occurs during the first few months after surgery, and the loss is sustained in the long term. Bariatric surgery, particularly Roux-en-Y gastric bypass and sleeve gastrectomy, have demonstrated effectiveness in promoting weight loss and improving diabetes outcomes among severely obese individuals. A 2021 Evidence Update for Clinicians found that Roux-en-Y gastric bypass patients experienced slightly better weight loss and diabetes control outcomes than sleeve gastrectomy patients, though with a higher risk for rehospitalization and need for additional surgeries.[80]
In one study there was an unexplained increase in deaths from accidents and suicide, but this did not outweigh the benefit in terms of disease prevention.[79] When the two main techniques are compared, gastric bypass procedures are found to lead to 30% more weight loss than banding procedures one year after surgery.[81] For obese individuals with non-alcoholic fatty liver disease (NAFLD), bariatric surgery improves or cures the liver.[82][83]
A preoperative diet such as low-calorie diets or very-low-calorie diet, is usually recommended to reduce liver volume by 16-20%, and preoperative weight loss is the only factor associated with postoperative weight loss.[84][85] Preoperative weight loss can reduce operative time and hospital stay.[84][86][87] although there is insufficient evidence whether preoperative weight loss may be beneficial to reduce long-term morbidity or complications.[87][88] Weight loss and decreases in liver size may be independent from the amount of calorie restriction.[85]
Ileojejunal bypass, in which the digestive tract is rerouted to bypass the small intestine, was an experimental surgery designed as a remedy for morbid obesity.
The effects of liposuction on obesity are less well determined. Some small studies show benefits[89] while others show none.[90] A treatment involving the placement of an intragastric balloon via gastroscopy has shown promise. One type of balloon led to a weight loss of 5.7BMI units over 6months or 14.7kg (32lb). Regaining lost weight is common after removal, however, and 4.2% of people were intolerant of the device.[91]
An implantable nerve simulator which improves the feeling of fullness was approved by the FDA in 2015.[92]
In 2016 the FDA approved an aspiration therapy device that siphons food from the stomach to the outside and decreases caloric intake.[93] As of 2015 one trial shows promising results.[94]
Health policy
Obesity is a complex public health and policy problem because of its prevalence, costs, and health effects.[95] As such, managing it requires changes in the wider societal context and effort by communities, local authorities, and governments.[96] Public health efforts seek to understand and correct the environmental factors responsible for the increasing prevalence of obesity in the population. Solutions look at changing the factors that cause excess food energy consumption and inhibit physical activity. Efforts include federally reimbursed meal programs in schools, limiting direct junkfood marketing to children,[97] and decreasing access to sugar-sweetened beverages in schools.[98] The World Health Organization recommends the taxing of sugary drinks.[99] When constructing urban environments, efforts have been made to increase access to parks and to develop pedestrian routes.[100]
Mass media campaigns seem to have limited effectiveness in changing behaviors that influence obesity. At the same time they can increase knowledge and awareness regarding physical activity and diet, which might lead to changes in the long term. Campaigns might also be able to reduce the amount of time spent sitting or lying down and positively affect the intention to be active physically.[101][102]Nutritional labelling with energy information on menus might be able to help reducing energy intake while dining in restaurants.[103]
Since there is a relationship between obesity and automobile travel, interventions relating to transportation infrastructure (for example, policy aimed at encouraging the use of public transportation) could potentially reduce obesity.[104][105]
Clinical protocols
Much of the Western world has created clinical practice guidelines in an attempt to address rising rates of obesity. Australia,[106] Canada,[5] the European Union,[107] the United Kingdom, [108] and the United States[109] have all published statements since 2004.
People with a BMI of over 30 should be counseled on diet, exercise and other relevant behavioral interventions, and set a realistic goal for weight loss.
If these goals are not achieved, pharmacotherapy can be offered. The person needs to be informed of the possibility of side-effects and the unavailability of long-term safety and efficacy data.
In people with a BMI over 40 who fail to achieve their weight loss goals (with or without medication) and who develop obesity-related complications, referral for bariatric surgery may be indicated. The person needs to be aware of the potential complications.
Those requiring bariatric surgery should be referred to high-volume referral centers, as the evidence suggests that surgeons who frequently perform these procedures have fewer complications.
A clinical practice guideline by the US Preventive Services Task Force (USPSTF) concluded that the evidence is insufficient to recommend for or against routine behavioral counseling to promote a healthy diet in unselected people in primary care settings, but that intensive behavioral dietary counseling is recommended in those with hyperlipidemia and other known risk factors for cardiovascular and diet-related chronic disease. Intensive counseling can be delivered by primary care clinicians or by referral to other specialists, such as nutritionists or dietitians.[110][111] A survey of primary care physicians in the United States[112] found that although clinical guidelines do not consider overweight to be a risk factor that increases mortality,[113] physicians often report believing that being overweight increases all-cause mortality.
Canada developed and published evidence-based practice guidelines in 2006. The guidelines attempt to address the prevention and management of obesity at both the individual and population levels in both children and adults.[5] The European Union published clinical practice guidelines in 2008 in an effort to address the rising rates of obesity in Europe.[107] Australia came out with practice guidelines in 2004.[106]
Related Research Articles
Dieting is the practice of eating food in a regulated way to decrease, maintain, or increase body weight, or to prevent and treat diseases such as diabetes and obesity. As weight loss depends on calorie intake, different kinds of calorie-reduced diets, such as those emphasising particular macronutrients, have been shown to be no more effective than one another. As weight regain is common, diet success is best predicted by long-term adherence. Regardless, the outcome of a diet can vary widely depending on the individual.
Obesity is a medical condition, sometimes considered a disease, in which excess body fat has accumulated to such an extent that it can potentially have negative effects on health. People are classified as obese when their body mass index (BMI)—a person's weight divided by the square of the person's height—is over 30 kg/m2; the range 25–30 kg/m2 is defined as overweight. Some East Asian countries use lower values to calculate obesity. Obesity is a major cause of disability and is correlated with various diseases and conditions, particularly cardiovascular diseases, type 2 diabetes, obstructive sleep apnea, certain types of cancer, and osteoarthritis.
Type 2 diabetes (T2D), formerly known as adult-onset diabetes, is a form of diabetes mellitus that is characterized by high blood sugar, insulin resistance, and relative lack of insulin. Common symptoms include increased thirst, frequent urination, fatigue and unexplained weight loss. Other symptoms include increased hunger, having a sensation of pins and needles, and sores (wounds) that heal slowly. Symptoms often develop slowly. Long-term complications from high blood sugar include heart disease, stroke, diabetic retinopathy, which can result in blindness, kidney failure, and poor blood flow in the lower-limbs, which may lead to amputations. The sudden onset of hyperosmolar hyperglycemic state may occur; however, ketoacidosis is uncommon.
Weight loss, in the context of medicine, health, or physical fitness, refers to a reduction of the total body mass, by a mean loss of fluid, body fat, or lean mass. Weight loss can either occur unintentionally because of malnourishment or an underlying disease, or from a conscious effort to improve an actual or perceived overweight or obese state. "Unexplained" weight loss that is not caused by reduction in calorific intake or increase in exercise is called cachexia and may be a symptom of a serious medical condition.
A fad diet is a diet that is popular, generally only for a short time, similar to fads in fashion, without being a standard scientific dietary recommendation, and often making unreasonable claims for fast weight loss or health improvements; as such it is often considered a type of pseudoscientific diet. Fad diets are usually not supported by clinical research and their health recommendations are not peer-reviewed, thus they often make unsubstantiated statements about health and disease.
Low-carbohydrate diets restrict carbohydrate consumption relative to the average diet. Foods high in carbohydrates are limited, and replaced with foods containing a higher percentage of fat and protein, as well as low carbohydrate foods.
The Mediterranean diet is a concept first invented in 1975 by the American biologist Ancel Keys and chemist Margaret Keys. The diet took inspiration from the supposed eating habits and traditional food typical of Crete, much of the rest of Greece, and southern Italy, and formulated in the early 1960s. It is distinct from Mediterranean cuisine, which covers the actual cuisines of the Mediterranean countries, and from the Atlantic diet of northwestern Spain and Portugal. While inspired by a specific time and place, the "Mediterranean diet" was later refined based on the results of multiple scientific studies.
Anti-obesity medication or weight loss medications are pharmacological agents that reduce or control excess body fat. These medications alter one of the fundamental processes of the human body, weight regulation, by: reducing appetite and consequently energy intake, increasing energy expenditure, redirecting nutrients from adipose to lean tissue, or interfering with the absorption of calories.
Calorie restriction is a dietary regimen that reduces the energy intake from foods and beverages without incurring malnutrition. The possible effect of calorie restriction on body weight management, longevity, and aging-associated diseases has been an active area of research.
Bariatrics is a discipline that deals with the causes, prevention, and treatment of obesity, encompassing both obesity medicine and bariatric surgery.
A high-protein diet is a diet in which 20% or more of the total daily calories come from protein. Many high protein diets are high in saturated fat and restrict intake of carbohydrates.
A healthy diet is a diet that maintains or improves overall health. A healthy diet provides the body with essential nutrition: fluid, macronutrients such as protein, micronutrients such as vitamins, and adequate fibre and food energy.
A very-low-calorie diet (VLCD), also known as semistarvation diet and crash diet, is a type of diet with very or extremely low daily food energy consumption. VLCDs are defined as a diet of 800 kilocalories (3,300 kJ) per day or less. Modern medically supervised VLCDs use total meal replacements, with regulated formulations in Europe and Canada which contain the recommended daily requirements for vitamins, minerals, trace elements, fatty acids, protein and electrolyte balance. Carbohydrates may be entirely absent, or substituted for a portion of the protein; this choice has important metabolic effects. Medically supervised VLCDs have specific therapeutic applications for rapid weight loss, such as in morbid obesity or before a bariatric surgery, using formulated, nutritionally complete liquid meals containing 800 kilocalories or less per day for a maximum of 12 weeks.
Metabolic dysfunction–associated steatotic liver disease (MASLD), previously known as non-alcoholic fatty liver disease (NAFLD), is a type of chronic liver disease. This condition is diagnosed when there is excessive fat build-up in the liver, and at least one metabolic risk factor. When there is also increased alcohol intake, the term MetALD, or metabolic dysfunction and alcohol associated/related liver disease is used, and differentiated from alcohol-related liver disease (ALD) where alcohol is the predominant cause of the steatotic liver disease. The terms non-alcoholic fatty liver (NAFL) and non-alcoholic steatohepatitis have been used to describe different severities, the latter indicating the presence of further liver inflammation. NAFL is less dangerous than NASH and usually does not progress to it, but this progression may eventually lead to complications, such as cirrhosis, liver cancer, liver failure, and cardiovascular disease.
Bariatric surgery is a medical term for surgical procedures used to manage obesity and obesity-related conditions. Long term weight loss with bariatric surgery may be achieved through alteration of gut hormones, physical reduction of stomach size, reduction of nutrient absorption, or a combination of these. Standard of care procedures include Roux en-Y bypass, sleeve gastrectomy, and biliopancreatic diversion with duodenal switch, from which weight loss is largely achieved by altering gut hormone levels responsible for hunger and satiety, leading to a new hormonal weight set point.
Being overweight is having more body fat than is optimally healthy. Being overweight is especially common where food supplies are plentiful and lifestyles are sedentary.
Intermittent fasting is any of various meal timing schedules that cycle between voluntary fasting and non-fasting over a given period. Methods of intermittent fasting include alternate-day fasting, periodic fasting, such as the 5:2 diet, and daily time-restricted eating.
Obesity is a risk factor for many chronic physical and mental illnesses.
Weight management refers to behaviors, techniques, and physiological processes that contribute to a person's ability to attain and maintain a healthy weight. Most weight management techniques encompass long-term lifestyle strategies that promote healthy eating and daily physical activity. Moreover, weight management involves developing meaningful ways to track weight over time and to identify the ideal body weights for different individuals.
Weight Watchers or WW is a commercial program for weight loss based on a point system, meals replacement and counseling.
↑ Poobalan AS, Aucott LS, Smith WC, Avenell A, Jung R, Broom J (November 2007). "Long-term weight loss effects on all cause mortality in overweight/obese populations". Obesity Reviews. 8 (6): 503–513. doi:10.1111/j.1467-789X.2007.00393.x. PMID17949355. S2CID42859237.
↑ Peeters A, O'Brien PE, Laurie C, Anderson M, Wolfe R, Flum D, etal. (December 2007). "Substantial intentional weight loss and mortality in the severely obese". Annals of Surgery. 246 (6): 1028–1033. doi:10.1097/SLA.0b013e31814a6929. PMID18043106. S2CID21151854.
↑ Matarese LE, Pories WJ (December 2014). "Adult weight loss diets: metabolic effects and outcomes". Nutrition in Clinical Practice (Review). 29 (6): 759–767. doi:10.1177/0884533614550251. PMID25293593.
↑ Gwinup G (1987). "Weight loss without dietary restriction: efficacy of different forms of aerobic exercise". The American Journal of Sports Medicine. 15 (3): 275–279. doi:10.1177/036354658701500317. PMID3618879. S2CID1973279.
↑ Sahlin K, Sallstedt EK, Bishop D, Tonkonogi M (December 2008). "Turning down lipid oxidation during heavy exercise--what is the mechanism?". Journal of Physiology and Pharmacology. 59 (Suppl 7): 19–30. PMID19258655.
↑ Lee L, Kumar S, Leong LC (February 1994). "The impact of five-month basic military training on the body weight and body fat of 197 moderately to severely obese Singaporean males aged 17 to 19 years". International Journal of Obesity and Related Metabolic Disorders. 18 (2): 105–109. PMID8148923.
↑ Heshka S, Anderson JW, Atkinson RL, Greenway FL, Hill JO, Phinney SD, etal. (April 2003). "Weight loss with self-help compared with a structured commercial program: a randomized trial". JAMA. 289 (14): 1792–1798. doi:10.1001/jama.289.14.1792. PMID12684357.
↑ Atallah R, Filion KB, Wakil SM, Genest J, Joseph L, Poirier P, etal. (November 2014). "Long-term effects of 4 popular diets on weight loss and cardiovascular risk factors: a systematic review of randomized controlled trials". Circulation: Cardiovascular Quality and Outcomes (Systematic review of RCTs). 7 (6): 815–827. doi:10.1161/CIRCOUTCOMES.113.000723. PMID25387778.
↑ Allan K (2018). "4.4 Group‐based interventions for weight loss in obesity.". In Hankey C (ed.). Advanced nutrition and dietetics in obesity. Wiley. pp.164–168. ISBN9780470670767.
↑ Avery A (2018). "4.7 Commercial weight management organisations for weight loss in obesity.". In Hankey C (ed.). Advanced nutrition and dietetics in obesity. Wiley. pp.177–182. ISBN9780470670767.
↑ UK Prospective Diabetes Study (UKPDS) Group (September 1998). "Effect of intensive blood-glucose control with metformin on complications in overweight patients with type 2 diabetes (UKPDS 34). UK Prospective Diabetes Study (UKPDS) Group". Lancet. 352 (9131): 854–865. doi:10.1016/S0140-6736(98)07037-8. PMID9742977. S2CID19208426.
↑ Fonseca V (December 2003). "Effect of thiazolidinediones on body weight in patients with diabetes mellitus". The American Journal of Medicine. 115 (Suppl 8A): 42S–48S. doi:10.1016/j.amjmed.2003.09.005. PMID14678865.
↑ Pathak K, Soares MJ, Calton EK, Zhao Y, Hallett J (June 2014). "Vitamin D supplementation and body weight status: a systematic review and meta-analysis of randomized controlled trials". Obesity Reviews. 15 (6): 528–537. doi:10.1111/obr.12162. PMID24528624. S2CID8660739.
↑ Maunder A, Bessell E, Lauche R, Adams J, Sainsbury A, Fuller NR (June 2020). "Effectiveness of herbal medicines for weight loss: A systematic review and meta-analysis of randomized controlled trials". Diabetes, Obesity & Metabolism. 22 (6): 891–903. doi:10.1111/dom.13973. PMID31984610.
↑ Sullivan S (2015). "Endoscopic Treatment of Obesity". In Jonnalagadda SS (ed.). Gastrointestinal Endoscopy: New Technologies and Changing Paradigms. Springer. pp.61–82. ISBN9781493920327. Retrieved 18 March 2016.
↑ Tice JA, Karliner L, Walsh J, Petersen AJ, Feldman MD (October 2008). "Gastric banding or bypass? A systematic review comparing the two most popular bariatric procedures". The American Journal of Medicine. 121 (10): 885–893. doi:10.1016/j.amjmed.2008.05.036. PMID18823860.
1 2 Holderbaum M, Casagrande DS, Sussenbach S, Buss C (February 2018). "Effects of very low calorie diets on liver size and weight loss in the preoperative period of bariatric surgery: a systematic review". Surgery for Obesity and Related Diseases (Systematic review). 14 (2): 237–244. doi:10.1016/j.soard.2017.09.531. PMID29239795.
↑ Livhits M, Mercado C, Yermilov I, Parikh JA, Dutson E, Mehran A, etal. (2008). "Does weight loss immediately before bariatric surgery improve outcomes: a systematic review". Surgery for Obesity and Related Diseases. 5 (6): 713–721. doi:10.1016/j.soard.2009.08.014. PMID19879814.
↑ Cassie S, Menezes C, Birch DW, Shi X, Karmali S (2010). "Effect of preoperative weight loss in bariatric surgical patients: a systematic review". Surgery for Obesity and Related Diseases (Systematic review). 7 (6): 760–7, discussion 767. doi:10.1016/j.soard.2011.08.011. PMID21978748.
↑ Giugliano G, Nicoletti G, Grella E, Giugliano F, Esposito K, Scuderi N, D'Andrea F (April 2004). "Effect of liposuction on insulin resistance and vascular inflammatory markers in obese women". British Journal of Plastic Surgery. 57 (3): 190–194. doi:10.1016/j.bjps.2003.12.010. PMID15006519.
1 2 Snow V, Barry P, Fitterman N, Qaseem A, Weiss K, etal. (Clinical Efficacy Assessment Subcommittee of the American College of Physicians) (April 2005). "Pharmacologic and surgical management of obesity in primary care: a clinical practice guideline from the American College of Physicians". Annals of Internal Medicine. 142 (7): 525–531. doi:10.7326/0003-4819-142-7-200504050-00011. PMID15809464. Fulltext.
↑ Pignone MP, Ammerman A, Fernandez L, Orleans CT, Pender N, Woolf S, etal. (January 2003). "Counseling to promote a healthy diet in adults: a summary of the evidence for the U.S. Preventive Services Task Force". American Journal of Preventive Medicine. 24 (1): 75–92. doi:10.1016/S0749-3797(02)00580-9. PMID12554027.
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