Bulimia Nervosa
Cycles of binge eating followed by self-induced vomiting, laxative use, or other behaviors meant to compensate for calories consumed.
What it is
Bulimia Nervosa involves recurring episodes of eating an unusually large amount of food with a sense of losing control, followed by compensatory behavior meant to “undo” the binge — most commonly self-induced vomiting, but also laxative or diuretic misuse, fasting, or excessive exercise.Signs & symptoms
Behavioral
- Eating unusually large amounts, then purging
- Secretive eating, frequent trips to the bathroom after meals
- Laxative, diuretic, or diet-pill use
- Strict dieting or fasting between episodes
Physical
- Swelling around the jaw or cheeks
- Dental erosion or sensitivity
- Calluses or scarring on the knuckles
- Fatigue, irregular heartbeat (electrolyte imbalance)
Emotional
- Shame or guilt after eating
- Feeling out of control during binge episodes
- Preoccupation with weight and shape
Causes & risk factors
Similar mix of factors to other eating disorders — biological predisposition, psychological traits like impulsivity or perfectionism, and sociocultural pressure around body shape. Bulimia frequently co-occurs with anxiety or depression.Related conditions
Bulimia overlaps with a few other patterns, depending on what happens before and after the purge.Treatment
Treatment commonly combines therapy (CBT is the most studied approach for bulimia) with medical monitoring, since purging behaviors carry real physical risk regardless of body weight. See our full guide to levels of care for how the right starting point is determined.Myths vs. facts
Myth: Bulimia always causes visible weight loss. Weight in bulimia is often in a typical or above-typical range, which is exactly why it can go unnoticed for longer than anorexia — there isn’t always a visible physical signal.
Myth: If someone isn’t vomiting, it isn’t bulimia. Compensatory behavior can also include laxative or diuretic misuse, fasting, or excessive exercise — vomiting is common but not the only qualifying behavior.
Myth: Bulimia is less serious than anorexia because weight looks normal. Purging carries its own significant medical risk — particularly electrolyte imbalances that can affect heart rhythm — independent of what someone weighs.
What treatment actually looks like
CBT is the most studied therapy approach for bulimia and typically works on breaking the binge-purge cycle directly: building regular eating patterns (paradoxically, skipping meals or restricting often increases binge urges), identifying triggers, and developing alternative coping responses to the urge to purge. Medical monitoring runs alongside therapy, especially early on, since electrolyte imbalances from purging can be dangerous even when someone feels physically fine — this is usually checked through routine bloodwork rather than something a person would notice on their own.
When to seek help
Regular purging carries real medical risk — electrolyte imbalance in particular can affect heart rhythm — so it’s worth a professional evaluation even if bingeing feels infrequent.Frequently asked questions
Can someone have bulimia at a completely normal body weight?
Yes — this is actually the more typical presentation. Significant weight change isn’t a diagnostic requirement for bulimia the way it is for anorexia.
Is it possible to have both anorexia and bulimia?
People can shift between restrictive and binge-purge patterns over the course of an illness, and some anorexia presentations include binge-purge behavior (called the binge-purge subtype) — these aren’t mutually exclusive categories over time, even though each diagnosis has specific criteria at a given point.