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Anorexia nervosa (AN), often referred to simply as anorexia, [12] is an eating disorder characterized by food restriction, body image disturbance, fear of gaining weight, and an overpowering desire to be thin. [1] Individuals with anorexia nervosa have a fear of being overweight or being seen as such, despite the fact that they are typically ...
Anorexia affects about 0.4% and bulimia affects about 1.3% of young women in a given year. [1] Up to 4% of women have anorexia, 2% have bulimia, and 2% have binge eating disorder at some point in time. [10] Anorexia and bulimia occur nearly ten times more often in females than males. [1] Typically, they begin in late childhood or early ...
Anorexia is a symptom, not a diagnosis. The symptom also occurs in animals, such as cats, [1] [2] dogs, [3] [4] cattle, goats, and sheep. [5] In these species, anorexia may be referred to as inappetence. As in humans, loss of appetite can be due to a range of diseases and conditions, as well as environmental and psychological factors. [2] [4]
The activity-based anorexia model has been one of the most suitable animal models when studying anorexia nervosa (AN). [83] The important behavioral aspects of AN, the drive for activity, the restricted food intake during hunger, and other physiological consequences of malnutrition, are all reproduced in this model. [ 84 ]
Anorexia Nervosa is a psychological disorder characterized by extremely reduced intake of food. People with anorexia nervosa tend to have a low self-image and an inaccurate perception of their body. Common behaviors and signs of someone with AN: Forcing oneself to vigorously exercise even in adverse conditions or when their health does not ...
Atypical anorexia was not described in earlier editions of the DSM, which included a requirement that person to have a body weight no higher than 85% of normal. [4] Patients with atypical anorexia were diagnosed with the DSM-4 qualification "eating disorder not otherwise specified" (EDNOS) until the DSM-5 was released in 2013. [4]
An anorectic is a drug that reduces appetite, resulting in lower food consumption, leading to weight loss. [1] These substances work by affecting the central nervous system or certain neurotransmitters to create a feeling of fullness or reduce the desire to eat.
The term anorexia nervosa was established in 1873 by Queen Victoria’s personal physician, Sir William Gull. The term anorexia is of Greek origin: an- (ἀν-, prefix denoting negation) and orexis (ὄρεξις, "appetite"), thus translating to "nervous absence of appetite".