An eating disorder is marked by extremes. It is present when a person
experiences severe disturbances in eating behavior, such as extreme
reduction of food intake, extreme overeating, or feelings of extreme
distress or concern about body weight or shape.
A person with an eating disorder may have started out just eating smaller or larger amounts of food than usual, but at some point, the urge to eat less or more spirals out of control. Eating disorders are very complex, and despite scientific research to understand them, the biological, behavioral and social underpinnings of these illnesses remain elusive.
The two main types of eating disorders are anorexia nervosa and bulimia nervosa. A third category is "eating disorders not otherwise specified” or EDNOS, which includes several variations of eating disorders. Most of these disorders are similar to anorexia or bulimia but with slightly different characteristics. Binge-eating disorder, which has received increasing research and media attention in recent years, is one type of EDNOS.
Eating disorders frequently appear during adolescence or young
adulthood, but some reports indicate that they can develop during
childhood or later in adulthood. Women and girls are much more likely
than males to develop an eating disorder. Men and boys account for an
estimated 5 to 15 percent of patients with anorexia or bulimia and an
estimated 35 percent of those with binge-eating disorder. While males
with eating disorders exhibit the same types of emotional, physical and
behavioral signs and symptoms as females, for a variety of reasons, they
are less likely to be diagnosed with what is often considered a
stereotypically "female" disorder.
Eating disorders are real, treatable medical illnesses with complex underlying psychological and biological causes. They frequently co-exist with other psychiatric disorders such as depression, substance abuse, or anxiety disorders. People with eating disorders also can suffer from numerous other physical health complications, such as heart conditions or kidney failure, which can lead to death.
Psychological and medicinal treatments are effective for many eating disorders. However, in more chronic cases, specific treatments have not yet been identified. In these cases, treatment plans often are tailored to the patient's individual needs that may include medical care and monitoring; medications; nutritional counseling; and individual, group and/or family psychotherapy. Some patients may also need to be hospitalized to treat malnutrition or to gain weight, or for other reasons.
Source: National Institute of Mental Health
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