Anorexia is an
eating disorder. It occurs when a person's obsession with diet and exercise leads to extreme weight loss. The disorder is considered if a person refuses to maintain a body weight at or above 85% of their ideal body weight. Anorexia can be fatal.
The cause of anorexia is not known. It appears to be a combination of genetics and environment.
Anorexia is more common in women. Factors that increase your risk for anorexia include: Low self-esteemFeelings of helplessnessPerfectionismFear of becoming overweightPressure to be thinFamily history of eating disordersEmotional stress
Mood disorders, such as
generalized anxiety disorderPersonality disordersInfluenced by social and fashion trends emphasizing or glamorizing thinness
Symptoms may include: Excessive weight lossObsession with food, calories, and fat contentDieting even when thinIntense fear of gaining weight, even when underweightBody dysmorphia—distorted self-image of being overweight despite evidence of the oppositeBasing self-evaluation heavily on body weight or shapeLoss of menstrual periods Excessive exercisingFeeling cold, especially hands and feetBeing secretive about foodHair loss and/or growth of fine hair on the bodyFainting or severe light-headednessConstipationDepression
Anorexia often leads to a number of serious medical problems including: Osteoporosis
Cardiac problems, which can be fatal if an
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You will be asked about your symptoms and medical history. A physical exam and psychological evaluation will be done.
Other tests may include: Blood tests to look for chemical imbalancesElectrocardiogram
(EKG)—to check your heart's electrical activity
Bone density tests
The goal of treatment is to return to and maintain a healthy weight. A healthy weight is above 85% of your ideal weight. To achieve this, the intake of calories is gradually increased. This can be accomplished through a number of interventions, including the following:
A dietitian may be consulted to help you learn more about the components of a healthy diet. The dietitian will also talk to you about reasonable weight and calorie goals.
Therapy can help address harmful thought patterns, improve eating behavior, and increase self-esteem. There are many different types of therapy. Work with your doctor and therapists to determine which therapy may be best for you. You may use more than one therapy or try different therapies before you find one that works best for you. Some therapy options include: Cognitive behavioral therapists
—To help you develop a healthier and more realistic self-image. The therapist will help you find new ways to think about your body and your diet.
—To help you understand and cope with concerns about your relationships.
Family therapy—Families often play a role in eating disorders. Many people cannot recover unless their families are involved in the changes. All families need to understand the disorder to provide the appropriate support.
In some cases, people with anorexia benefit from a combination of psychotherapy and antidepressant medication. In particular, selective serotonin reuptake inhibitors (SSRIs)
are used. Used alone, antidepressant therapy is not an effective treatment for anorexia.
Medications and supplements may include: Vitamins and minerals to maintain adequate nutritionHormone replacement
to resume periods and prevent bone loss
Hospitalization may be necessary if: Weight is more than 25% below ideal body weightThere are signs of serious physical or emotional deterioration
There are no current guidelines to prevent anorexia. Early detection and treatment is the best option.
Anorexia nervosa. EBSCO DynaMed website. Available at:
http://www.ebscohost.com/dynamed. Updated February 20, 2013. Accessed July 22, 2013.
Anorexia nervosa fact sheet.
Office on Women's Health website. Available at:
Updated July 16, 2012. Accessed July 22, 2013.
Casper RC. How useful are pharmacological treatments in eating disorders?
Psychopharmacol Bull. 2002;36(2):88-104.
Last reviewed June 2015 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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