Bulimia

What it is

Bulimia nervosa is a cycle. It begins with a binge: eating an objectively large amount of food in a short time with a frightening sense of lost control. Shame and fear of weight gain follow, and the person attempts to compensate in ways that are harmful and never actually neutralise the binge. Then restriction and rising hunger set up the next binge, and the cycle tightens, often running for years in complete secrecy.

Self-worth becomes chained to shape and weight. Because most people with bulimia look outwardly well and are often high-functioning, families and clinicians frequently miss it; the suffering is interior, and the shame is the lock on the door.

Why it is medically serious

The compensatory behaviours injure the body: the heart's rhythm (through disturbed body salts, which can be dangerous), the digestive system, and the teeth, which dentists are often the first to notice. Depression, anxiety and self-harm commonly travel with bulimia. None of this is said to frighten; it is said because “it's not as serious as anorexia” is a myth that keeps people from treatment.

How common is it

Bulimia is one of the more common eating disorders, and it usually begins in the teenage years or early twenties. It affects women most, though men develop it too. Because people with bulimia are often at a normal weight and outwardly well, it is easily hidden and frequently missed, so the real number affected is higher than it appears.

What causes it

There is no single cause. A tendency runs in families, and bulimia often appears in people who are sensitive to stress and to pressure about shape and weight. Strict dieting is a powerful trigger, because hunger and rigid food rules set up the loss of control that starts the cycle. Low mood, anxiety, perfectionism, and difficult experiences can all play a part. It is an illness, not a lack of discipline.

How it is diagnosed

There is no single test. A clinician makes the diagnosis through an honest, non-judgemental conversation about the cycle of loss of control and compensation, how often it happens, and how much shape and weight affect the person's self-worth, alongside a medical check, since the body's salts, heart, and teeth can be affected. Telling a clinician plainly is the hardest and most important step.

How it is treated

Enhanced cognitive behavioural therapy for eating disorders (CBT-E) is the leading treatment: it interrupts the binge-compensate cycle by establishing regular, adequate eating first (the single most powerful anti-binge intervention), then dismantles the rules, body-checking and self-worth equations that drive the condition. Guided self-help based on CBT works for many and suits settings where specialists are scarce. Among medications, fluoxetine (an SSRI) has specific evidence in bulimia and can support therapy. With treatment, a large share of people recover fully; without it, the cycle tends to persist.

Bulimia in the African context

Eating disorders were long, and wrongly, believed to be a Western problem, which has delayed recognition across Africa. Bulimia is found here, often well hidden, and rising appearance pressure from social media and urban life is increasing it among young people. Because most people with bulimia look well, it is easily missed by families and even clinicians. Recognising it as a common and treatable illness, and asking gently rather than assuming, opens the way to help.

Helping someone

If someone you love may have bulimia, how you respond matters.

• Approach them with warmth and without blame or disgust, in private and at a calm time.
• Avoid commenting on weight, food, or appearance, and try not to police their eating.
• Listen, take it seriously, and make clear that the illness is common and treatable.
• Encourage specialist help, and offer to help find it or go with them. Our find a therapist page can help.
• Be patient through setbacks, which are part of recovery, and look after yourself too.