Bulimia can be caused by a genetic component. Certain genes might predispose a human to developing bulimia. Bulimia appears to run in familiespeople with relatives suffering from bulimia have a higher frequency of developing bulimia. This may, however, have more to do with family influences and role models than genetics

Some all the people may feel that they are fat, no matter how thin they actually are.  Or they may feel guilty when they eat too much food. The guilt and shame from eating makes the human vomit up all their food. These many people have bulimia nervosa, or bulimia, an eating disorder. The disorder has nothing to do with the digestive system, but rather with the mind. And though everybody with bulimia might share the identical guilt and shame about food, and the same patterns of bingeing and purging, bulimia has many causes. Doctors have not identified any one cause of bulimia, but do understand of several factors that might contribute to developing bulimia.

Bulimia can be caused by a genetic component. Certain genes might predispose a person to developing bulimia. Bulimia appears to run in familiespeople with relatives suffering from bulimia have a higher frequency of developing bulimia. This might , however, have more to do with family influences and role models than genetics. 

Brain chemistry may also cause bulimia. Research indicates that everybody with bulimia tend to have different levels of a chemical in the brain called serotonin. Altered levels of serotonin may also contribute to clinical depression.

Social pressures might contribute to bulimias development. People who want to please others might feel compelled to keep thin and fit. Women in particular receive daily messages to be thin. This drive may turn into an eating disorder.

Emotional stress from family problems or being a perfectionist can also contribute to a human developing bulimia.

A person with bulimia will first binge, meaning that he or she will eat more than 1,000 calories in one sitting. Sometimes, to a human with an eating disorder like a bulimia, eating a cookie might constitute a binge. The binge then triggers intense feelings of self-disgust and the person will induce vomiting, exercise excessively, or abuse laxatives to remove the perceived excess weight.

Bulimia is caused by numerous, subtle factors, and all people suffering from bulimia positive need treatment from a psychiatrist and therapy to break the binge-and-purge cycle. Bulimia is completely treatable.