About - Anorexia nervosa, often simply called anorexia, is a serious eating disorder characterized by persistent restriction of food intake, an abnormally low body weight, an intense fear of gaining weight, and a strong desire to be thin. People with anorexia may have a distorted perception of their body size or weight and may continue to restrict food even when they are already underweight. Anorexia is not simply a matter of dieting or choosing to eat less. It is a complex mental health condition that can affect the brain, heart, bones, digestive system, hormones, and other organs. Without appropriate treatment, severe anorexia can become life-threatening. The disorder can affect people of any age, sex, body size, ethnicity, or background. Although it is particularly common during adolescence and young adulthood, it can occur at any stage of life. Early recognition and treatment can significantly improve recovery and help prevent serious complications.
Excessive concern about calories, food, or dieting
Wearing loose clothing to hide weight loss
Using laxatives, diuretics, diet pills, or other methods to control weight
Some people with anorexia may also experience episodes of binge eating followed by behaviors intended to prevent weight gain, such as vomiting or excessive exercise. This may occur in the binge-eating/purging form of anorexia nervosa.
The exact cause of anorexia nervosa is not known. It is thought to develop from a combination of biological, psychological, and environmental factors rather than from a single cause. Possible contributing factors include:
Eating disorders can run in families. Certain genetic and biological factors may increase a person’s vulnerability to anorexia. Differences in brain chemistry and the way the brain regulates appetite, reward, anxiety, and mood may also play a role.
Social and cultural pressures surrounding body weight, appearance, dieting, and thinness may contribute to the development of anorexia. Exposure to weight-focused environments, bullying, criticism about appearance, or certain sporting and performance activities may also increase risk in susceptible individuals. However, these factors do not mean that a person or family is responsible for causing anorexia.
A doctor or mental health professional usually diagnoses anorexia based on the person’s eating behavior, weight changes, thoughts about body image, and physical and psychological health. Evaluation may include:
Medical history
Eating and weight history
Assessment of thoughts and behaviors related to food and body image
Physical examination
Measurement of weight, height, blood pressure, and pulse
Blood and urine tests
Electrolyte and blood sugar testing
Assessment of heart function, sometimes including an electrocardiogram (ECG)
Evaluation of bone health when appropriate
Psychological assessment
A low body weight is common in anorexia, but an eating disorder can cause serious medical problems even when a person’s weight is not extremely low. Therefore, symptoms and eating behaviors should always be taken seriously.
A registered dietitian or qualified nutrition professional can help develop a structured and individualized eating plan. The goals are to restore adequate nutrition, gradually reach a healthier weight when necessary, correct nutritional deficiencies, and establish sustainable eating habits. Treatment should be supervised because rapid nutritional restoration in severely malnourished people can sometimes cause refeeding syndrome, a potentially serious disturbance of electrolytes and body fluids.
People with severe anorexia may require medical monitoring or hospitalization, particularly when there is significant malnutrition, dehydration, electrolyte imbalance, dangerously low blood pressure, an abnormal heart rhythm, or other serious complications. Medication does not directly cure anorexia, but medicines may sometimes be used to treat associated conditions such as depression or anxiety. They should be prescribed and monitored by a qualified healthcare professional.
Prolonged inadequate nutrition can affect nearly every organ system. Possible complications include:
Severe malnutrition
Dehydration
Electrolyte abnormalities
Low blood pressure
Slow or irregular heartbeat
Heart failure in severe cases
Anemia
Weak immune function
Muscle loss and weakness
Osteopenia or osteoporosis
Increased risk of fractures
Hormonal disturbances
Infertility or menstrual irregularities
Constipation and other digestive problems
Kidney problems
Brain and nervous system changes
Difficulty concentrating
Depression and anxiety
Social isolation
Severe anorexia can be life-threatening. The risk may result from extreme malnutrition, electrolyte disturbances, heart problems, or other medical complications.
A person should seek professional help if there is persistent food restriction, significant unexplained weight loss, intense fear of gaining weight, excessive exercise, repeated use of weight-control products, or significant concern about body shape or food. Urgent medical evaluation is particularly important if there is:
Fainting or severe dizziness
Chest pain
Difficulty breathing
Confusion
Severe weakness
Persistent vomiting
Severe dehydration
Very slow or irregular heartbeat
Inability to eat or drink adequately
Anorexia is a treatable medical and psychological condition, and seeking help early can improve the chances of recovery.
There is no guaranteed way to prevent anorexia nervosa, but healthy attitudes toward food, weight, and body image may help reduce risk. Helpful approaches include:
Avoiding extreme or unnecessary dieting
Encouraging balanced and regular meals
Promoting healthy attitudes toward different body shapes and sizes
Avoiding negative comments about body weight or appearance
Teaching children and adolescents about healthy nutrition and body image
Seeking professional help for persistent concerns about food or weight
Paying attention to early changes in eating habits, exercise, mood, and weight
Family members and friends can support someone with anorexia by listening without judgment, avoiding arguments about food or appearance, and encouraging professional treatment.
No. Anorexia nervosa is a serious eating disorder involving persistent restriction of food, intense fear of gaining weight, and disturbances in how a person experiences or evaluates their body weight or shape. It can cause serious medical complications.
Yes. Eating disorders can occur in people of different body sizes. A person’s appearance alone cannot determine whether they have anorexia or another eating disorder.
Many people recover from anorexia with appropriate treatment and ongoing support. Recovery can take time, and some people may experience periods of relapse. Early treatment generally provides the best opportunity for recovery.
Yes. Severe nutritional restriction and low body weight can disrupt hormone production and cause menstrual periods to become irregular or stop. Hormonal disturbances can also affect bone health.
Yes. Severe malnutrition can affect heart rate, blood pressure, heart muscle, and electrolyte balance. In serious cases, these changes can become life-threatening.
It can be. Exercise may become excessive or compulsive when it is primarily used to prevent weight gain or compensate for eating. Excessive exercise can be particularly dangerous when the body is malnourished.
Medical Disclaimer: This article is intended for general educational and informational purposes and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Anorexia nervosa can cause serious and potentially life-threatening complications. Anyone experiencing symptoms of an eating disorder should consult a qualified healthcare professional.
