Eating disorders are serious conditions involving disturbances in eating and related thoughts, feelings or behaviors. They can affect physical health, psychological well-being and daily life. They are not choices or signs of vanity, and they can occur at any body size. Early assessment and appropriate treatment can help.
Types of eating disorders
Anorexia nervosa
Anorexia nervosa involves restrictive intake leading to significantly low weight in the person’s developmental and health context, together with fear of weight gain or behaviors that interfere with weight gain and disturbances in how weight or shape is experienced. Restricting and binge-eating/purging subtypes describe clinical patterns; they are not chosen routes to weight loss. Serious restrictive eating can also occur without low body weight, including atypical anorexia.
Bulimia nervosa
Bulimia involves recurrent binge eating with loss of control and compensatory behaviors such as vomiting, misuse of laxatives, fasting or excessive exercise. These behaviors can cause serious medical complications. Appearance alone cannot identify the condition.
Binge eating disorder
Binge eating disorder involves recurrent, distressing episodes of eating unusually large amounts while feeling out of control, without regular compensatory behaviors of the kind seen in bulimia. Shame or guilt can occur in both conditions; absence of guilt is not what distinguishes them.
Other eating and feeding disorders
Avoidant/restrictive food intake disorder, or ARFID, involves restrictive intake with nutritional, growth or functional consequences, without the weight-and-shape motivation typical of anorexia. It can affect children and adults. Pica involves persistently eating non-food substances in circumstances where this is developmentally and culturally inappropriate. Rumination disorder involves repeated regurgitation that needs assessment for medical and other explanations. Other specified presentations can also be serious.
Signs that deserve attention
- Persistent restriction, distress about meals or a narrowing range of accepted foods.
- Recurrent episodes of eating that feel out of control.
- Vomiting, laxative misuse, fasting or excessive exercise to compensate for eating.
- Preoccupation with food, body shape, weight or muscularity that disrupts life.
- Dizziness, fainting, fatigue, gastrointestinal symptoms, menstrual changes or concerns about growth.
- Avoidance of shared meals, social withdrawal or marked anxiety around eating.
No single symptom, body weight or demographic profile confirms or excludes an eating disorder. Men, women and gender-diverse people can be affected. Some people have little concern about appearance, and not everyone loses weight. Athletes may need assessment of nutrition, exercise and performance pressures without assuming that every sport-related eating pattern is a disorder.
Why do eating disorders develop?
Research points to interacting genetic, biological, psychological and social influences. Family history can affect risk but does not determine the outcome. There are no “clear genes” that guarantee protection. Weight stigma, distress, restrictive dieting and other factors may contribute differently for different people. A single cause should not be assumed.
Assessment and screening
A screening questionnaire can flag concerns but cannot diagnose or rule out an eating disorder on its own. If symptoms persist despite a low screening score, seek assessment. A clinician will ask about eating, exercise, physical symptoms, mental health and daily functioning and may arrange examination, blood tests or heart monitoring when indicated.
Medical risk can be significant at any weight. Seek urgent care for collapse, chest pain, severe dehydration, blood in vomit, severe weakness or immediate risk of suicide. Changes in nutrition after prolonged inadequate intake may need medical monitoring; generic advice to eat as much as possible is not a safe substitute for an individual plan.
Treatment and recovery
Treatment usually combines psychological care, nutritional support and appropriate physical-health monitoring. The approach depends on the diagnosis, age, risk and preferences. A dietitian experienced in eating disorders can help plan adequate nourishment. For children and adolescents, family involvement may be an important part of treatment, with attention to consent and safeguarding.
Eating-disorder-focused cognitive behavioral therapy and other established psychological approaches may be appropriate. CBT-E is an enhanced form of CBT for eating disorders; it is not defined simply by outpatient or group delivery. Session numbers and treatment response vary. A therapist works collaboratively and cannot read someone’s mind or guarantee prevention of recurrence.
Medication may help particular eating disorders or co-occurring conditions, but it is not the sole treatment. Approval and indications differ by country and age. Medicines for weight loss or appetite manipulation should not be presented as general eating disorder remedies. Tube feeding is a medical intervention used when clinically necessary, with appropriate assessment and monitoring.
Many people receive outpatient care. Day programs, residential treatment or hospital care may be needed according to medical and psychiatric risk. The setting and duration should be reviewed as needs change.
