Overview
Anorexia nervosa and bulimia nervosa are both serious eating disorders, but they differ in behaviors and physical effects. Anorexia involves extreme restriction of food intake, intense fear of gaining weight, and significant weight loss. Bulimia is marked by cycles of binge eating followed by purging behaviors such as vomiting or excessive exercise. While anorexia often leads to being underweight, individuals with bulimia may have a normal weight or be overweight. Both conditions have serious psychological and physical consequences and require professional treatment.
Disease Summaries
Anorexia: Anorexia nervosa is an eating disorder marked by intense fear of gaining weight, distorted body image, and self-imposed starvation leading to significantly low body weight. It can affect physical health (including heart, bone, and hormonal health) and mental wellbeing. The exact cause is multifactorial, including genetic, psychological, and environmental factors.
Bulimia: Bulimia nervosa is characterized by recurring episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, fasting, or excessive exercise. Individuals often have a normal or near-normal weight but experience shame, guilt, and secrecy around eating behaviors.
Comparing Symptoms
Overlapping Symptoms
- Preoccupation with body image and weight
- Intense fear of weight gain
- Distorted self-perception
- Nutritional deficiencies
- Menstrual irregularities or loss
Anorexia Specific Symptoms
- Extreme food restriction and calorie counting
- Very low body weight
- Cold intolerance, dizziness, and fatigue
- Hair thinning or loss
- Fine hair growth on skin
Bulimia Specific Symptoms
- Binge eating episodes (eating large amounts in a short time)
- Compensatory behaviors (vomiting, laxatives, fasting, over-exercising)
- Dental erosion from stomach acid
- Swollen cheeks or jaw glands
- Normal or fluctuating body weight
Treatment Approaches
Anorexia Treatment Approaches
Treatment requires a multidisciplinary approach. Nutritional rehabilitation is the first priority, often combined with individual or family-based therapy. Cognitive behavioral therapy (CBT) is commonly used. In some cases, hospitalization may be needed to address severe malnutrition or medical instability. Ongoing psychological support is essential for long-term recovery.
Bulimia Treatment Approaches
The mainstay of treatment is psychotherapy, especially cognitive behavioral therapy. Nutritional counseling helps normalize eating patterns. Medications may help reduce binge-purge cycles. Support groups and education play a key role. Inpatient treatment may be required for severe cases or when complications arise.
Reviewed By:

Kenji Taylor, MD, MSc (Family Medicine, Primary Care)
Dr. Taylor is a Japanese-African American physician who grew up and was educated in the United States but spent a considerable amount of time in Japan as a college student, working professional and now father of three. After graduating from Brown, he worked in finance first before attending medical school at Penn. He then completed a fellowship with the Centers for Disease Control before going on to specialize in Family and Community Medicine at the University of California, San Francisco (UCSF) where he was also a chief resident. After a faculty position at Stanford, he moved with his family to Japan where he continues to see families on a military base outside of Tokyo, teach Japanese residents and serve remotely as a medical director for Roots Community Health Center. He also enjoys editing and writing podcast summaries for Hippo Education.

Yu Shirai, MD (Psychiatry)
Dr. Shirai works at the Yotsuya Yui Clinic for mental health treatment for English and Portuguese-speaking patients. He treats a wide range of patients from neurodevelopmental disorders to dementia in children and participates in knowledge sharing through the Diversity Clinic.
Content updated on May 1, 2025
Following the Medical Content Editorial Policy
Was this page helpful?
Tell your friends about us.
We would love to help them too.
Still not sure if you need
to see a doctor?
Try a symptom check testHow Ubie Can Help You
With a free 3-min Anorexia vs Bulimia quiz, powered by Ubie's AI and doctors, find possible causes of your symptoms.
This questionnaire is customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
Your symptoms

Our AI

Your report

Your personal report will tell you
✔ When to see a doctor
✔︎ What causes your symptoms
✔︎ Treatment information etc.
Ubie is supervised by 50+ medical experts worldwide
Our symptom checker AI is continuously refined with input from experienced physicians, empowering them to make more accurate diagnoses.






Ubie is recognized by healthcare and tech leaders

“World’s Best Digital
Health Companies”
Newsweek 2024

“Best With AI”
Google Play Best of 2023

“Best in Class”
Digital Health Awards 2023 (Quarterfinalist)

Which is the best Symptom Checker?
Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1References
American Psychological Association - Anorexia Nervosa
https://dictionary.apa.org/anorexia-nervosaAmerican Psychological Association - Bulimia Nervosa
https://dictionary.apa.org/bulimia-nervosaAmerican Psychological Association - Treatment for Eating Disorders
https://www.apa.org/topics/eating-disorders/treatment