An eating disorder is a mental disorder defined by abnormal eating behaviors that negatively affect a person's physical or mental health. Types of eating disorders include binge eating disorder, where the patient eats a large amount in a short period of time; anorexia nervosa, where the person has an intense fear of gaining weight and restricts food or overexercises to manage this fear; bulimia nervosa, where individuals eat a large quantity (binging) then try to rid themselves of the food (purging); pica, where the patient eats non-food items; rumination syndrome, where the patient regurgitates undigested or minimally digested food; avoidant/restrictive food intake disorder (ARFID), where people have a reduced or selective food intake due to some psychological reasons; and a group of other specified feeding or eating disorders. Anxiety disorders, depression and substance abuse are common among people with eating disorders. These disorders do not include obesity. People often experience comorbidity between an eating disorder and OCD. It is estimated 20-60% of patients with an ED have a history of OCD.
Bulimia nervosa, also known as simply bulimia, is an eating disorder characterized by binge eating followed by purging or fasting, and excessive concern with body shape and weight. This activity aims to expel the body of calories eaten from the binging phase of the process. Binge eating refers to eating a large amount of food in a short amount of time. Purging refers to the attempts to get rid of the food consumed. This may be done by vomiting or taking laxatives.
Orthorexia nervosa (ON) is a proposed eating disorder characterized by an excessive preoccupation with eating healthy food. The term was introduced in 1997 by American physician Steven Bratman, M.D. He suggested that some people's dietary restrictions intended to promote health may paradoxically lead to unhealthy consequences, such as social isolation; anxiety; loss of ability to eat in a natural, intuitive manner; reduced interest in the full range of other healthy human activities; and, in rare cases, severe malnutrition or even death.
Appetite is the desire to eat food items, usually due to hunger. Appealing foods can stimulate appetite even when hunger is absent, although appetite can be greatly reduced by satiety. Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by a close interplay between the digestive tract, adipose tissue and the brain. Appetite has a relationship with every individual's behavior. Appetitive behaviour also known as approach behaviour, and consummatory behaviour, are the only processes that involve energy intake, whereas all other behaviours affect the release of energy. When stressed, appetite levels may increase and result in an increase of food intake. Decreased desire to eat is termed anorexia, while polyphagia is increased eating. Dysregulation of appetite contributes to anorexia nervosa, bulimia nervosa, cachexia, overeating, and binge eating disorder.
Promotion of anorexia is the promotion of behaviors related to the eating disorder anorexia nervosa. It is often referred to simply as pro-ana or ana. The lesser-used term pro-mia refers likewise to bulimia nervosa and is sometimes used interchangeably with pro-ana. Pro-ana groups differ widely in their stances. Most claim that they exist mainly as a non-judgmental environment for anorexics; a place to turn to, to discuss their illness, and to support those who choose to enter recovery. Others deny anorexia nervosa is a mental illness and claim instead that it is a lifestyle choice that should be respected by doctors and family.
Obsessive–compulsive personality disorder (OCPD) is a cluster C personality disorder marked by a spectrum of obsessions with rules, lists, schedules, and order, among other things. Symptoms are usually present by the time a person reaches adulthood, and are visible in a variety of situations. The cause of OCPD is thought to involve a combination of genetic and environmental factors, namely problems with attachment.
A food or eating addiction is any behavioral addiction that is primarily characterized by the compulsive consumption of palatable food items which markedly activate the reward system in humans and other animals despite adverse consequences.
An underweight person is a person whose body weight is considered too low to be healthy. A person who is underweight is malnourished.
Sociology of the body is a branch of sociology studying the representations and social uses of the human body in modern societies.
Anorexia athletica, also referred to as hypergymnasia, is an eating disorder characterized by excessive and compulsive exercise. An athlete with sports anorexia tends to overexercise to give themselves a sense of having control over their body. Most often, people with the disorder tend to feel they have no control over their lives other than their control of food and exercise. In actuality, they have no control; they cannot stop exercising or regulating food intake without feeling guilty. Generally, once the activity is started, it is difficult to stop because the person is seen as being addicted to the method adopted.
Relative energy deficiency in sport (RED-S) is a syndrome in which disordered eating, amenorrhoea/oligomenorrhoea, and decreased bone mineral density are present. It is caused by eating too little food to support the amount of energy being expended by an athlete, often at the urging of a coach or other authority figure who believes that athletes are more likely to win competitions when they have an extremely lean body type. RED-S is a serious illness with lifelong health consequences and can potentially be fatal.
Compulsive behavior is defined as performing an action persistently and repetitively. Compulsive behaviors could be an attempt to make obsessions go away. The act is usually a small, restricted and repetitive behavior, yet not disturbing in a pathological way. Compulsive behaviors are a need to reduce apprehension caused by internal feelings a person wants to abstain from or control. A major cause of compulsive behavior is said to be obsessive–compulsive disorder (OCD). "The main idea of compulsive behavior is that the likely excessive activity is not connected to the purpose to which it appears directed." There are many different types of compulsive behaviors including shopping, hoarding, eating, gambling, trichotillomania and picking skin, itching, checking, counting, washing, sex, and more. Also, there are cultural examples of compulsive behavior.
Overeaters Anonymous (OA) is a twelve-step program founded in 1960 for people with problems related to food including, but not limited to, compulsive overeaters, those with binge eating disorder, bulimics and anorexics. Anyone with a problematic relationship with food is welcomed; OA's Third Tradition states that the only requirement for memberships is a desire to stop eating compulsively.
The National Eating Disorders Association (NEDA) is an American non-profit organization devoted to preventing eating disorders, providing treatment referrals, and increasing the education and understanding of eating disorders, weight, and body image. The National Eating Disorders Association organizes and sponsors National Eating Disorders Week. Also known as NEDAwareness Week, it takes place during the last week of February, and is "a collective effort of primarily volunteers, including eating disorder professionals, health care providers, students, educators, social workers, and individuals committed to raising awareness of the dangers surrounding eating disorders and the need for early intervention and treatment."
Animal psychopathology is the study of mental or behavioral disorders in non-human animals.
Eating recovery refers to the full spectrum of care that acknowledges and treats the multiple etiologies of anorexia nervosa and bulimia, including the biological, psychological, social and emotional causes of the disorder, through a comprehensive, integrated treatment regimen. When successful, this regimen restores the individual to a healthy weight and arms them with the skills and resources needed to maintain a sustainable recovery. Although there are a variety of treatment options available to the eating disorders patient, the intensive and multi-faceted program followed in eating recovery is the appropriate option for individuals who require intensive support and are able to commit to treatment in an inpatient, residential or full-day hospital setting.
Anorexia nervosa, often referred to simply as anorexia, is an eating disorder characterized by low weight, food restriction, body image disturbance, fear of gaining weight, and an overpowering desire to be thin. Anorexia is a term of Greek origin: an- and orexis, translating literally to "a loss of appetite"; the adjective nervosa indicating the functional and non-organic nature of the disorder. Anorexia nervosa was coined by Gull in 1873 but, despite literal translation, the feeling of hunger is frequently present and the pathological control of this instinct is a source of satisfaction for the patients.
Exercise addiction is a state characterized by a compulsive engagement in any form of physical exercise, despite negative consequences. While regular exercise is generally a healthy activity, exercise addiction generally involves performing excessive amounts of exercise to the detriment of physical health, spending too much time exercising to the detriment of personal and professional life, and exercising regardless of physical injury. It may also involve a state of dependence upon regular exercise which involves the occurrence of severe withdrawal symptoms when the individual is unable to exercise. Differentiating between addictive and healthy exercise behaviors is difficult but there are key factors in determining which category a person may fall into. Exercise addiction shows a high comorbidity with eating disorders.
Many memory impairments exist as a result from or cause of eating disorders. Eating disorders (EDs) are characterized by abnormal and disturbed eating patterns that affect the lives of the individuals who worry about their weight to the extreme. These abnormal eating patterns involve either inadequate or excessive food intake, affecting the individual's physical and mental health.
Drunkorexia is a colloquialism for anorexia or bulimia combined with an alcohol use disorder. The term is generally used to denote the utilization of extreme weight control methods to compensate for planned binge drinking. Research on the combination of an eating disorder and binge drinking has primarily focused on college-aged women, though the phenomenon has also been noted among young men. Studies suggest that individuals engage in this combination of self-imposed malnutrition and binge drinking to avoid weight gain from alcohol, to save money for purchasing alcohol, and to facilitate alcohol intoxication.
