Bulimia nervosa, often abbreviated to bulimia, is an eating disorder where you have an intense dread of putting on weight. Bulimia is most common in teenage girls and young women, although anyone can develop the illness at any age.
About bulimia nervosa
If you have bulimia you have cycles of eating too much in a short period of time - often in secret. This is called binge-eating or bingeing. Bingeing often involves rapid eating of high calorie foods, often thought of as treats (eg chocolate and cakes). This is followed by a feeling of shame due to overeating.
If you have bulimia you then find ways of ridding yourself of the food or of the calories you have consumed. This is called purging. This may be by vomiting, taking laxatives or diuretics (water tablets), excessive exercise, periods of fasting or a combination of these.
About four in 100 women have bulimia at some point in their lives. Bulimia most often develops in women in their late teens to early twenties. For every ten women with bulimia, about one man has the condition.
If you have bulimia you often remain within the normal weight range for your height. The other main eating disorder is anorexia nervosa, which is characterised by excessive weight loss. Some people with bulimia have had, or go on to develop, anorexia.
Bulimia is often not noticed until associated health problems have developed. However, if you have bulimia you may:
Not eat with others or disappear to the toilet after meals to vomit the food you have eaten
Have a binge-purge cycle at least twice a week for three months or more
Have an intense dread of gaining weight
Have frequent weight changes
Be preoccupied with thoughts of food or cravings
Secretly hoard away food
Be obsessed with exercise
Have a distorted body image
Become secretive and unwilling to socialise
Find it hard to concentrate
Over time, bulimia can lead to various health problems. These can include:
Tooth decay, discoloured teeth, gum disease and bad breath caused by stomach acid in the mouth from regular vomiting - also patches of rough skin on the knuckles or fingers if they are used to make you vomit
A puffy face over the jaw from swollen salivary glands (glands in the mouth which produce saliva to keep the mouth moist)
A sore throat
Irregular periods or periods stop altogether
Severe dehydration, which can cause weakness, fainting or kidney damage
Inflammation of the stomach and oesophagus (the tube leading from the mouth to the stomach), caused by the acid in vomit
Low blood pressure and palpitations (irregular heart beat)
Constipation or diarrhoea and tummy pain
Swollen hands and feet
Dry skin and hair loss
Difficulty sleeping and tiredness
Damage to the bowel muscles caused by use of laxatives
Damage to the heart
It's important that people with bulimia receive appropriate treatment. If untreated, there is a chance that they may die from related health problems, although this is rare.
The cause of bulimia isn't fully understood at present. It may develop due to a combination of emotional, physical and social reasons. The precise reasons for developing bulimia are probably different for each person.
Certain personality features are commonly associated with eating disorders, these include:
Low self-esteem, where how you think about your body shape affects your self-worth
A loss of interest in other people
Trying to be perfect
Mood problems, especially depression
Mental health problems such as obsessive compulsive disorder (where you can't stop thinking about or doing certain actions)
If you have these personality features, an eating disorder may give you a sense of control and achievement.
There are certain factors that make it more likely that you will develop bulimia.
Eating disorders are more common in white people in western societies and are rare in developing countries.
Some people believe that media images of thinness may influence the start of eating disorders.
If you have type 1 diabetes, you are more likely to develop bulimia.
If you have previously had anorexia, you have an increased risk of developing bulimia.
If you have tried to lose weight by dieting a number of times, you have an increased risk of developing bulimia.
A family history of eating disorders increases the risk of developing bulimia. This could be due to genetic factors or copying behaviour from other family members.
A specific emotionally upsetting event, such as divorce or abusive family relationships may cause bulimia to develop. Binge-eating may be a way to block out unhappy feelings.
Getting help is very important. Admitting you have a problem is the first, yet hardest, step. If you take that step, you can find the support and treatment you need to stop bulimia taking over your life.
Help and support
It can be upsetting to witness loved ones putting their health at risk and it's natural to want to help. But unwanted pressure or criticism from others usually makes matters worse.
Try to let the person make his or her own choices and let the person know that love and support are always there. Once the person has recognised the problem, offer to help with practical matters such as finding medical help and support groups. Support groups also provide advice and information for families and friends of people with eating disorders.
Recovering from bulimia
You can recover from bulimia, but it can be a long and difficult process. You may need to have psychotherapy for months or years, and you can have relapses in times of stress. You may find bulimia difficult to overcome, but with determination, patience and support it can be done.