Anorexia nervosa is an eating disorder in which people severely restrict their food intake, often driven by an intense fear of gaining weight and a distorted view of their body image. It matters because it can have serious physical and mental health consequences and is a condition that requires professional treatment.
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via PubMed
Anorexia nervosa (AN), often referred to simply as anorexia, is an eating disorder characterized by predominant food restriction, body image disturbance, fear of gaining weight, and an overwhelming desire to be thin. These characteristics often mean individuals undergo severe malnutrition as a result of the disorder.
Individuals with anorexia nervosa have a fear of gaining weight, despite the fact that they are typically underweight. The DSM-5 describes this perceptual symptom as "disturbance in the way in which one's body weight or shape is experienced". Recent research has shown, that this disturbance is not based on a visual body size overestimation, rather than body dissatisfaction: individuals with anorexia can accurately visually identify their body size, but find severely underweight bodies the most attractive . Individuals with anorexia nervosa may also deny that their symptoms or behaviors are indicative of illness. They may weigh themselves frequently, eat small amounts, and only eat certain foods in order to be in as much control of their body appearance as possible. Some patients with anorexia nervosa binge eat and purge to further influence their weight or shape. Purging can manifest as induced vomiting, excessive exercise, and/or laxative abuse. Anorexia nervosa has the highest mortality rate of any psychiatric diagnosis. Medical complications may include osteoporosis, infertility, and heart damage, along with the cessation of menstrual periods and death. Complications in men may include lowered testosterone. In cases where the patients with anorexia nervosa continually refuse significant dietary intake and weight restoration interventions, a psychiatrist can declare the patient to lack capacity to make decisions, which results in a medical decision to be fed by restraint via nasogastric tube.
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