What is bulimia nervosa?
Bulimia nervosa is an eating disorder characterized by a repetitive cycle of binge eating — episodes in which the person consumes large amounts of food with a sense of loss of control — followed by compensatory behaviors aimed at preventing weight gain, such as self-induced vomiting, laxative or diuretic use, fasting or excessive physical exercise.
Unlike anorexia nervosa, people with bulimia usually maintain a weight within the normal range or slightly above, which makes the disorder less visible from the outside. This "invisibility" often delays diagnosis and allows the disorder to become chronic for years without those around the person noticing.
Bulimia affects about 1-2% of the general population and is more common in women, although it is also diagnosed in men. As a psychologist specialized in eating disorders, I see how this disorder deeply impacts the emotional, social and physical life of those who experience it.
The bulimic cycle: binge and purge
The bulimic cycle usually follows a characteristic pattern:
1. Restriction and emotional tension
Often, the cycle begins with excessive food restriction or with a build-up of negative emotions (stress, anxiety, sadness, loneliness). The person tries to control their weight through rigid diets that generate growing tension.
2. Binge
The restriction or emotional tension eventually overflows into a binge episode. The person eats compulsively, often very quickly and in secret, consuming thousands of calories in a short time. During the binge, the person feels a total loss of control and a momentary disconnection from emotional distress.
3. Guilt and compensatory behavior
Immediately after the binge, intense feelings of guilt, shame and fear of gaining weight appear. This leads the person to engage in compensatory behaviors such as self-induced vomiting, laxative use or exhaustive physical exercise to "compensate" for what was eaten.
4. Promise of change and renewed restriction
After purging, the person promises to "never do it again" and starts the cycle again with renewed food restriction. However, this restriction generates the very tension that will end in another binge, perpetuating the cycle.
Symptoms of bulimia nervosa
Physical signs
- Frequent weight fluctuations
- Erosion of dental enamel, frequent cavities and tooth sensitivity
- Swelling of the salivary glands (puffy or "hamster" cheeks)
- Calluses or sores on the knuckles (Russell's sign)
- Chronic sore throat and hoarse voice
- Gastroesophageal reflux and digestive problems
- Dehydration and dry skin
- Menstrual irregularities
- Fatigue and muscle weakness
Psychological and behavioral signs
- Going to the bathroom immediately after meals
- Eating large amounts in a short time and in secret
- Finding wrappers or food remains hidden away
- Obsessive concern about weight and body shape
- Mood swings, irritability and shame
- Social isolation, especially in situations involving food
- Use of laxatives, diuretics or weight-loss products
- Compulsive exercise to "compensate"
Causes of bulimia nervosa
As with all eating disorders, bulimia is caused by a combination of factors:
- Biological: genetic predisposition, alterations in serotonin and dopamine that affect the regulation of mood and impulsivity.
- Psychological: low self-esteem, impulsivity, difficulty regulating emotions, perfectionism, traumatic experiences. Many people with bulimia use binges as a form of "emotional anesthesia."
- Social: cultural pressure to be thin, diet culture, comments about weight during childhood or adolescence.
Traumatic experiences — abuse, neglect, bullying — are particularly linked to bulimia. Treatment with EMDR is very useful in these cases for processing the underlying trauma.
Health consequences
The purging behaviors of bulimia can cause severe and even potentially fatal damage:
- Electrolyte imbalances: the loss of potassium, sodium and other minerals through vomiting or laxatives can cause potentially fatal cardiac arrhythmias.
- Esophageal damage: stomach acid can erode the esophagus and, in severe cases, cause esophageal rupture (Boerhaave syndrome).
- Dental problems: erosion of dental enamel is often irreversible.
- Gastroparesis: the digestive system is altered by the binge-purge cycle.
- Infertility: hormonal alterations can make conception more difficult.
Treatment of bulimia nervosa
Cognitive-behavioral therapy (CBT)
CBT is the treatment of choice for bulimia nervosa. It works to interrupt the binge-purge cycle, identify and modify distorted thoughts about body and food, and develop emotional regulation skills. It is usually structured in 20 sessions over 5 months.
EMDR for associated trauma
When bulimia is linked to traumatic experiences, EMDR makes it possible to process the traumatic memories that fuel the bulimic cycle, reducing the need to use bingeing as a coping mechanism.
Nutritional rehabilitation
A regular and balanced eating plan, guided by a dietitian specialized in eating disorders, helps normalize eating patterns and reduce the need to binge.
Asking for help is an act of courage
If you identify with what you have read, I want you to know that you are not alone and that recovery is possible. Bulimia feeds on secrecy and shame; daring to talk about it is the first step toward freedom. I offer a free informational session where we can talk about your situation in a safe and confidential setting.