Bulimia

Overview

Bulimia (also called bulimia nervosa) is a serious eating disorder. A person with bulimia goes through cycles of eating very large amounts of food in a short time (called binge eating) and then trying to get rid of the extra calories to avoid gaining weight (called purging). Purging can mean making themselves vomit, misusing laxatives or diuretics, fasting, or exercising too much. Bulimia is not a choice or a phase. It is a mental health condition that can be treated.

Bulimia is one of the more common eating disorders. Researchers think that about 1 to 3 in every 100 people will have bulimia at some point in their lives. It may be even more common than people think, because many people keep it a secret.

Bulimia can affect anyone, no matter their gender, age, weight or background. It most often starts in the late teens or early twenties, and it is more commonly diagnosed in women and girls. But men and boys can have bulimia too, and it also appears in older adults and people of all cultures.

Symptoms

Common symptoms

• Eating unusually large amounts of food in a short period
• Feeling you cannot stop eating during a binge
• Purging after a binge, such as making yourself vomit or using laxatives
• Strong fear of gaining weight
• Spending a lot of time thinking about food, weight and body shape
• Mood changes, anxiety or irritability
• Avoiding meals with others, or disappearing to the bathroom after eating
• Sore throat, swollen cheeks, or tooth problems from throwing up
• Sometimes feeling dizzy, tired or weak

Symptoms in children

• In children and teenagers, bulimia can be harder to spot. You might notice your child eating very quickly, sneaking food, or going to the bathroom right after meals.
• Their weight may fluctuate, or they may become overly focused on their body shape.
• Look for cracks at the corners of the mouth, sore throat, or calluses on the knuckles (from making themselves vomit).
• Moodiness, secrecy about food, social withdrawal and a sudden interest in dieting can also be warning signs.

Symptoms in older adults

• In older adults, bulimia is sometimes missed because the signs are blamed on other health issues.
• They may have a long history of dieting or laxative misuse, and may be secretive about their eating.
• Watch for unexplained weight changes, dental erosion, dehydration, tiredness, or abnormal blood test results.
• The emotional signs are similar to those in younger people — guilt, shame, and intense worry about weight and shape.

Causes

Main causes

• Bulimia does not have a single cause. It usually starts when several things come together.
• Genes and family history can play a part — eating disorders can run in families.
• Psychological factors such as low self-esteem, perfectionism, anxiety or depression
• Social and cultural pressures to be thin, especially from media or jobs that value appearance
• Stressful life events or transitions, such as break-ups, exams, moving, or losing a loved one
• Dieting too strictly – this can trigger binge eating which may lead to bulimia

Risk factors

• Being a young woman, although men and older people can develop it too
• Having a history of dieting or an unhealthy obsession with food
• Having a close relative with an eating disorder
• Experiencing trauma, abuse or bullying
• Playing sports or activities where weight matters, like running, gymnastics, wrestling or dance
• Having an anxiety disorder or depression

When to see a doctor

See a doctor urgently if:

• If you are having thoughts about self-harm or suicide, get help right away — call your local emergency number or a crisis line.
• If you have symptoms such as chest pain, fainting, or vomiting blood, seek emergency medical care immediately.
• If you are caring for someone with bulimia and they show signs of a serious medical problem, do not wait.

Book a routine appointment if:

• If you think you might have bulimia, book an appointment as soon as you can.
• If you are a parent and you are worried about your teenager's eating habits or weight changes, talk to your GP.
• If you have had bulimia for a while and have never asked for help, it is never too late to start.

Diagnosis

There is no single blood test that confirms bulimia. Instead, your GP or a specialist will listen to your experiences and ask you about your eating habits, thoughts about food and weight, and how you are coping emotionally. They will also check your physical health. To make a diagnosis, the doctor will look for a pattern of binge eating and purging that happens at least once a week for three months or more.

Tests that may be done

• A full physical examination, including weight, blood pressure and heart rate
• Blood tests to check your salt levels (electrolytes) and kidney function
• A urine test, which may show if you are using laxatives or diuretics
• An ECG (electrocardiogram) to check your heart's rhythm if there are any concerns
• A dental check-up, because repeated vomiting can damage your teeth and gums

What to expect at your appointment

You may be asked some very personal questions — for example, about your bathroom habits, your weight history and whether you have ever made yourself vomit. This is not to embarrass you. It gives your doctor the facts they need to keep you safe. You can ask to have a friend or relative with you. After this assessment, your doctor may refer you to a specialist eating disorder team or community mental health service.

Treatment

Treatment for bulimia focuses on your physical safety and your emotional wellbeing. Your care team will usually include doctors, psychologists and dietitians. You will be supported to break the binge-purge cycle, learn healthier coping skills and restore your relationship with food and your body.

Self-care at home

• Aim to eat regular structured meals — skipping meals often makes bingeing more likely.
• Keep a simple diary of when you binge or purge, what you were feeling, and what happened before it. This can reveal your triggers.
• Try gentle activities that calm you, like deep breathing, writing, drawing, or talking to someone you trust.
• Avoid labels like 'good' or 'bad' food — no food is off-limits, but balance and portion size matter.
• Don't weigh yourself every day. Ask your care team how often is useful.
• Be patient. Recovery is a process and it is normal to have difficult days.

Medical treatments

The most effective treatment for bulimia is a talking therapy called cognitive behavioural therapy (CBT). It helps you see the link between your thoughts, emotions and eating patterns, and gives you practical skills to change them. Family-based therapy is often offered if you are a teenager. You may also be offered medication to help with anxiety or depression, but no one should ever take these without close review by a doctor. Your GP or specialist will explain all options and create a plan that suits you.

When is surgery considered?

Surgery is not used to treat bulimia itself. However, you may need separate dental or medical procedures for complications such as damaged teeth, gastric reflux or other physical effects. Your GP will let you know if you need to see a specialist.

Living with this condition

Living with bulimia can feel exhausting and isolating, but small consistent steps help you move forward. Try to build a daily routine with regular meals, enough sleep and time for things you enjoy. Let your trusted people know how they can support you. Remind yourself that you are more than this illness — you are a person on a journey of recovery.

Lifestyle tips

• Create a calm, structured daily schedule.
• Get enough sleep — aim for around 7 to 9 hours if you can.
• Avoid alcohol, laxatives and diet pills.
• Keep your social plans — being around people can ease the urge to binge.
• Find physical movement that feels good, like walking, stretching or swimming.
• Keep all your therapy and GP appointments, even when you feel better.

Diet and exercise

With help from a dietitian, aim for a balanced pattern of meals and snacks throughout the day. This might include carbohydrates like rice or bread, proteins like fish, eggs or beans, healthy fats, fruit and vegetables. The goal is to make sure your body gets enough energy. For exercise, think of it as a way to feel good rather than a way to burn off what you ate. Avoid weighing yourself often; your care team can help you decide what is helpful for you.

Mental health and emotional wellbeing

Bulimia is not just about food. It is connected to anxiety, depression, guilt and shame. These feelings can feel overwhelming, but they can improve with treatment. If you ever feel so low that you think about harming yourself, that is an emergency. Talk to your local crisis service or call your emergency number right away. You deserve support, and help is available.

Prevention

Bulimia cannot always be prevented, but there are things that can reduce the risk. Talking openly about food, eating, and body image at home and school can help. Encouraging healthy attitudes towards bodies — at all sizes — can protect against the shame that often drives eating disorders. If you are noticing unhealthy dieting patterns in yourself or someone you care about, stepping in early can stop bulimia from developing.

Vaccines

There is no vaccine for bulimia.

Screening programmes

There is no routine screening test for bulimia in most parts of the world. However, healthcare providers might ask about eating habits during regular check-ups, especially if there are warning signs such as weight changes, dizziness, dental problems or low mood. If you or your child have risk factors, you can ask your GP for a simple assessment at any time.

Complications

If left untreated

• Severe dehydration and low levels of essential minerals (like potassium), which can damage the kidneys and heart.
• Abnormal heart rhythms, which can be dangerous.
• Damage to the gullet (esophagus) and stomach from repeated vomiting.
• Tooth enamel erosion, cavities and gum disease from stomach acid.
• Chronic constipation, bloating and bowel damage from laxative misuse.
• Missing periods and reduced bone density in women.
• Worsening depression, anxiety and social isolation.
• In severe cases, bulimia can be life-threatening.

Long-term outlook

Recovery from bulimia is realistic and happens every day. Many people who receive treatment go on to live full, healthy lives. It takes time, patience and support, but it is absolutely possible. Setbacks are normal — they are not failures. The fact that you are reading this is already a hopeful step toward getting better.

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