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obesity, condition resulting from excessive storage of fat in the body. Obesity is now usually defined using a formula known as the body mass index (BMI), in which weight (in kilograms) is divided by height (in meters) squared. A person with a BMI of 25 or above is generally considered overweight; with one of 30 or above, obese. It has been estimated that roughly two thirds of American adults are overweight or obese, and that more than a third are obese.

Health and Social Implications

Obesity is a major public health concern because it predisposes the individual to many disorders, such as noninsulin-dependent diabetes, hypertension, stroke, and coronary artery disease, and has been associated with an increased incidence of certain cancers, notably cancers of the colon, rectum, prostate, breast, uterus, and cervix. In contemporary American society, obesity also carries with it a sometimes devastating social stigma. Obese people are often ostracized, and discrimination against them, especially in hiring and promotion, is common.

Causes of Obesity

Obesity research has yielded a complicated picture of the underlying causes of the condition. The simple cause is ingestion of more calories than are required for energy, the excess being stored in the body as fat. Inactivity and insufficient exercise can be contributing factors; the less active the person, the fewer calories are needed to maintain normal body weight. Overeating may result from unhealthful patterns of eating established by the family and cultural environment, perhaps exacerbated by psychological distress, an emotional dependence on food, or the omnipresence of high-calorie foods.

In some cases, obesity can come from an eating disorder. It has been shown, for example, that binging for some people releases natural opiates in the brain, providing a sense of well-being and physical pleasure. Other studies have found a strong relationship between obesity in women and childhood sexual abuse.

Some weight-loss experts see obesity as based upon genetics and physiology rather than as a behavioral or psychological problem. For example, rat studies have shown that fat cells secrete a hormone that helps the rat's brain assess the amount of body fat present. The brain tries to keep the amount of that hormone (which also appears to act on the brain area that regulates appetite and metabolic rate) at a set level, resulting in the so-called set point—a weight that the body comes back to, even after resolute dieting. The gene that encodes this hormone, called the obese or ob gene, has been isolated in both rats and humans. In addition, a gene that influences obesity and the onset of diabetes has been identified. It has been estimated that from 8 to 30 different genes may influence obesity.


Radical treatments for weight loss have included wiring shut the jaw, operations that reduce the size of the stomach, and intestinal bypass operations circumventing a large area of the small intestine, limiting the area where food is absorbed. The “diet pills” of the 1960s, essentially amphetamines such as Dexedrine, are now seldom prescribed for weight loss. Fenfluramine and dexfenfluramine, drugs formerly used to achieve short-term weight loss, were withdrawn from the market following concerns that they could cause heart valve damage. Drugs to treat obesity now include orlistat (Xenical), which acts to block absorption of dietary fat in the intestine. In 2007 an over-the-counter version of orlistat was approved by the Food and Drug Administration.

Although the study of obesity is yielding many possibilities for treatment, the main focus remains diet (especially a diet limiting fat calories) and exercise, often coupled with emotional and behavioral support. The long-term weight-loss success of most attempts at dieting, however, is notoriously low. Groups such as Overeaters Anonymous, modeled after Alcoholics Anonymous, give support to people with weight problems and eating disorders.

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the excess accumulation of fatty tissue in man that results from overeating combined with insufficient muscular activity. Obesity is a disease that results from the predominance of fat synthesis and storage over fat breakdown.

One of the principal mechanisms responsible for obesity is the disruption of the coordination between fat metabolism and carbohydrate metabolism. This disruption intensifies the conversion of carbohydrates to fats. A pathological metabolism or tendency toward abnormally large fat cells can be hereditarily transmitted. Overeating in general and the overconsumption of carbohydrate foods, such as dishes that contain flour and sugar, encourage the manifestation of a hereditary predisposition to obesity.

Obesity can also result from certain diseases of the central nervous system or from endocrine disorders—especially a failure in hypothalamic regulation. Metabolic disturbances, poor eating habits, and lack of exercise can also lead to obesity. Although the disease can occur at any age, it usually first appears in childhood. The greatly increased incidence of obesity in the 20th century is also related to scientific and technological progress, for example, automation and mechanization of many industrial and household processes with the corresponding decrease in muscular activity. According to the World Health Organization (1972), about 30 percent of the population of the economically developed countries is 20 percent or more over the normal weight. The average life expectancy of obese individuals is five to ten years below normal.

Obesity is manifested by a considerable increase in weight, owing to the accumulation of fat in the subcutaneous fatty tissue, omentum, mediastinum, pericardium, and renal capsule. It interferes with the functioning of the heart, alters the locomotor apparatus, and promotes early aging. Metabolic disturbances that result from obesity can lead to the development of atherosclerosis and diabetes mellitus. Several degrees of obesity are distinguished: first-degree obesity involves a 29-percent weight increase above normal; second-degree, a 30- to 49-percent increase; third-degree, a 50- to 99-percent increase; and fourth-degree, a 100-percent or greater increase. Fat is sometimes deposited evenly, sometimes only in one part of the body; the latter, localized, form of obesity is called lipomatosis.

Obesity is treated with a properly balanced diet, a supervised health regimen, dietotherapy, physical therapy, and anorexigenics. In complicated forms of obesity, efforts are made to eliminate the underlying causes. Prevention of obesity must start in childhood with the establishment of such routines as a properly balanced diet and a healthy amount of physical activity.


Leites, S. M. Patofiziologiia zhirovogo obmena. Moscow, 1964. (Bibliography.)
Egorov, M. N. “Ozhirenie.” In Mnogotomnoe rukovodstvopo vnutrennim bolezniam, vol. 8. Edited by E. M. Tareev. Moscow, 1965.
Leites, S. M., and N. N. Lapteva. Ocherkipo patofiziologii obmena veshchestv i endokrinnoi sistemy. Moscow, 1967.
Prediabet i ozhirenie. Moscow, 1973.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

What does it mean when you dream about obesity?

The popular psychological interpretation of obesity is lack of self-esteem and overindulgence in fear and denial; layers of protection to insulate the dreamer from involvement or action; hopelessness and helplessness to express power and authority; fear that rejection will be the only reward for effort. Other possible meanings are the “fat cat” who ate the mouse, being “full of oneself,” or fattening up the livestock (for slaughter). (See also Fat).

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.


An excessive accumulation of body fat which confers health risks such as diabetes, cardiovascular diseases, arthritis, and some types of tumors.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


As usual, the interpretation of this dream depends on you. You may be concerned about your looks and fear that you are becoming fat. Be realistic in regard to this area of your life. If you are very thin and cannot stop worrying about your weight, you should see a doctor. Psychologically speaking, obesity usually is a sign that the individual has issues with self-esteem and personal power. In dreams about obesity, fat emotionally insulates us from others and isolates us physically.
Bedside Dream Dictionary by Silvana Amar Copyright © 2007 by Skyhorse Publishing, Inc.
References in periodicals archive ?
Moshriq stressed that merging ministries does not intend a certain ministry or bloc, but to prevent flabbiness and ease financial burdens.
America's "moral flabbiness," William James (1920) said, is an inevitable product of the country's obsession with "the bitch-goddess success." Given how driven someone must be to run for and then win the presidency, small wonder that such individuals play fast and loose with ethical standards that they fear might inhibit their freedom first to get to the White House and then to achieve big things.
Try executive luxury nurtured by vast size (two corporate jets when one is questionable), managerial flabbiness spawned by hefty margins (swollen staffs), the bureaucratic burden of large organizations (massive personnel departments), the sluggishness of pure size (interminable committees).
In the modernist imagination the desert became a proving ground on which high modernists, along with explorers, could toughen up, matching themselves against an extreme environment in order to purge away "all flabbiness and sentiment" (43).
It is from the waist upward that flabbiness usually sets in.
She had never liked white flesh: it had always seemed to hint of flabbiness, before this.
(64) 'obviously it is very close to Hals hut I was constantly troubled by the feebleness of the drawing, particularly the way that the head did not seem to sit on the shoulders, and the flabbiness of the hands.
The Faith of Christians, Guardini said, will need to be more decisive, stripped of all secularism and flabbiness. The Old Testament, that reveals the Living God, who casts down the powers and the pagan rulers of life, will take on a new significance.
All that fruit makes for a full-bodied almost fleshy wine but with enough tartness to prevent any flabbiness - and we all know how much we hate flabby bits.
According to a survey published by the People's Dispensary for Sick Animals (PDSA), the obesity epidemic amongst humans is mirrored by similar flabbiness in pets.
With the creation of Healthy Living Cambridge Kids in 2000, the coalition trained its sights on the problem of overweight and physical flabbiness. At the time, the CHCTF identified "5-2-1" guidelines to direct policy, programming, and evaluation for healthy living for children: Five servings of fruits and vegetables, 2 hours or less of screen (TV and computer) time, and 1 hour of physical activity daily.