A student treated at Bach Mai Hospital developed dangerously low potassium, depression and self-harm after a year of bingeing and purging, highlighting why bulimia can be missed when appearance is the focus.
Bulimia nervosa is often hidden in plain sight, because the disorder is not defined by body size alone. Doctors at Bach Mai Hospital in Hanoi have warned that repeated binge eating, followed by self-induced vomiting or the misuse of laxatives and diuretics, can trigger dangerous electrolyte disturbances and serious mental distress even in people who do not look underweight.
In one case described by the hospital, a 21-year-old student spent about a year trapped in a cycle of restrictive eating, binge episodes and purging. Family pressure, criticism about her appearance and academic stress appear to have fuelled her fixation on weight. She began skipping meals, relying on tea and coffee to slim down, and then found herself overeating several times a week before forcing herself to vomit and using laxatives, diuretics and excessive exercise to compensate.
When she sought treatment, doctors found that her body mass index was 17.6, she had not menstruated for three months and both of her salivary glands were enlarged. Her potassium level had fallen to 2.9 mmol/L, a level that can cause muscle weakness and abnormal heart rhythms. The hospital also said she showed severe depressive symptoms and had previously injured herself during periods of emotional strain.
Specialists say this pattern is typical of bulimia nervosa, in which fear of weight gain drives a destructive loop of restriction, bingeing and purging. Mayo Clinic, Johns Hopkins Medicine and the NHS all note that the disorder can lead to dehydration, electrolyte imbalance, damage to the digestive system, tooth erosion and menstrual disruption. They also stress that treatment usually combines psychotherapy, nutritional support and, in some cases, medication.
At Bach Mai Hospital, the student was treated with medication, transcranial magnetic stimulation, cognitive behavioural therapy and nutritional counselling. According to the doctors involved, her condition gradually improved and she was able to return to school. The case underlines a point repeated by clinicians elsewhere: recovery depends not only on medical care, but also on family support and an early response to warning signs.
That support matters because bulimia can be missed if families focus only on appearance. A person may be average weight, or even overweight, and still be seriously ill. Warning signs include going to the bathroom immediately after meals, hiding food, fasting for long periods, exercising compulsively, feeling dizzy or exhausted, swollen cheeks or worn tooth enamel. Medical help is urgent if a patient faints, has chest pain, palpitations, seizures, severe weakness or vomits blood.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
