Anorexia nervosa

People with anorexia nervosa may see themselves as overweight, even when they are dangerously underweight. People with anorexia nervosa typically weigh themselves repeatedly, severely restrict the amount of food they eat, often exercise excessively, and/or may force themselves to vomit or use laxatives to lose weight. Anorexia nervosa has the highest mortality rate of any mental disorder. While many people with this disorder die from complications associated with starvation, others die of suicide.

Symptoms include:

• Extremely restricted eating
• Extreme thinness (emaciation)
• A relentless pursuit of thinness and unwillingness to maintain a normal or healthy weight
• Intense fear of gaining weight
• Distorted body image, a self-esteem that is heavily influenced by perceptions of body weight and shape, or a denial of the seriousness of low body weight

Other symptoms may develop over time, including:

• Thinning of the bones (osteopenia or osteoporosis)
• Mild anemia and muscle wasting and weakness
• Brittle hair and nails
• Dry and yellowish skin
• Growth of fine hair all over the body (lanugo)
• Severe constipation
• Low blood pressure slowed breathing and pulse
• Damage to the structure and function of the heart
• Brain damage
• Multiorgan failure
• Drop in internal body temperature, causing a person to feel cold all the time
• Lethargy, sluggishness, or feeling tired all the time
• Infertility

Bulimia nervosa

People with bulimia nervosa have recurrent and frequent episodes of eating unusually large amounts of food and feeling a lack of control over these episodes. This binge-eating is followed by behavior that compensates for the overeating such as forced vomiting, excessive use of laxatives or diuretics, fasting, excessive exercise, or a combination of these behaviors. People with bulimia nervosa may be slightly underweight, normal weight, or over overweight.

Symptoms include:

• Chronically inflamed and sore throat
• Swollen salivary glands in the neck and jaw area
• Worn tooth enamel and increasingly sensitive and decaying teeth as a result of exposure to stomach acid
• Acid reflux disorder and other gastrointestinal problems
• Intestinal distress and irritation from laxative abuse
• Severe dehydration from purging of fluids
• Electrolyte imbalance (too low or too high levels of sodium, calcium, potassium, and other minerals) which can lead to stroke or heart attack

Binge-eating disorder

People with binge-eating disorder lose control over his or her eating. Unlike bulimia nervosa, periods of binge-eating are not followed by purging, excessive exercise, or fasting. As a result, people with binge-eating disorder often are overweight or obese. Binge-eating disorder is the most common eating disorder in the U.S.

Symptoms include:

• Eating unusually large amounts of food in a specific amount of time, such as a 2-hour period
• Eating even when you’re full or not hungry
• Eating fast during binge episodes
• Eating until you’re uncomfortably full
• Eating alone or in secret to avoid embarrassment
• Feeling distressed, ashamed, or guilty about your eating
• Frequently dieting, possibly without weight loss

Eating disorders can affect people of all ages, racial/ethnic backgrounds, body weights, and genders. Eating disorders frequently appear during the teen years or young adulthood but may also develop during childhood or later in life. These disorders affect both genders, although rates among women are higher than among men. Like women who have eating disorders, men also have a distorted sense of body image.

Researchers are finding that eating disorders are caused by a complex interaction of genetic, biological, behavioral, psychological, and social factors. Researchers are using the latest technology and science to better understand eating disorders.

One approach involves the study of human genes. Eating disorders run in families. Researchers are working to identify DNA variations that are linked to the increased risk of developing eating disorders.

Brain imaging studies are also providing a better understanding of eating disorders. For example, researchers have found differences in patterns of brain activity in women with eating disorders in comparison with healthy women. This kind of research can help guide the development of new means of diagnosis and treatment of eating disorders.

It is important to seek treatment early for eating disorders. People with eating disorders are at higher risk for suicide and medical complications. People with eating disorders can often have other mental disorders (such as depression or anxiety) or problems with substance use. Complete recovery is possible.

Treatment plans are tailored to individual needs and may include one or more of the following:

• Individual, group, and/or family psychotherapy
• Medical care and monitoring
• Nutritional counseling
• Medications

Psychotherapies

Psychotherapies such as a family-based therapy called the Maudsley approach, where parents of adolescents with anorexia nervosa assume responsibility for feeding their child, appear to be very effective in helping people gain weight and improve eating habits and moods.

To reduce or eliminate binge-eating and purging behaviors, people may undergo cognitive behavioral therapy (CBT), which is another type of psychotherapy that helps a person learn how to identify distorted or unhelpful thinking patterns and recognize and change inaccurate beliefs.

Medications

Evidence also suggests that medications such as antidepressants, antipsychotics, or mood stabilizers may also be helpful for treating eating disorders and other co-occurring illnesses such as anxiety or depression. Check the Food and Drug Administration’s (FDA) website: (http://www.fda.gov/), for the latest information on warnings, patient medication guides, or newly approved medications.

Clinical trials are research studies that look at new ways to prevent, detect, or treat diseases and conditions. The goal of clinical trials is to determine if a new test or treatment works and is safe. Although individuals may benefit from being part of a clinical trial, participants should be aware that the primary purpose of a clinical trial is to gain new scientific knowledge so that others may be better helped in the future.

Researchers at NIMH and around the country conduct many studies with patients and healthy volunteers. We have new and better treatment options today because of what clinical trials uncovered years ago. Be part of tomorrow’s medical breakthroughs. Talk to your health care provider about clinical trials, their benefits and risks, and whether one is right for you.

To learn more or find a study, visit:

• NIMH’s Clinical Trials webpage: Information about participating in clinical trials
• Clinicaltrials.gov: Current Studies on Eating Disorders: List of clinical trials funded by the National Institutes of Health (NIH) being conducted across the country

Free Brochures and Shareable Resources

• Eating Disorders: About More Than Food: A brochure about the common eating disorders anorexia nervosa, bulimia nervosa, and binge-eating disorder, and various approaches to treatment. Also available en Español.
• Let’s Talk About Eating Disorders: An infographic with facts that can help shape conversations around eating disorders.
• Shareable Resources on Eating Disorders: Help support eating disorders awareness and education in your community. Use these digital resources, including graphics and messages, to spread the word about eating disorders.

Research and Statistics

• NIMH Eating Disorders Research Program: This program supports research on the etiology, core features, longitudinal course, and assessment of eating disorders.
• Journal Articles: References and abstracts from MEDLINE/PubMed (National Library of Medicine).
• Statistics: Eating Disorders

Multimedia

• Mental Health Minute: Eating Disorders: Take a mental health minute to watch this video on eating disorders.
• Let’s Talk About Eating Disorders with NIMH Grantee Dr. Cynthia Bulik: Learn about the signs, symptoms, treatments, and the latest research on eating disorders.

Last Revised: February 2016

Source: National Institute of Mental Health