There is almost certainly a genetic predisposition to bulimia. The disorder runs in families. The biological cause is not specifically known, but most experts believe that brain pathways that control appetite are involved in the disorder.

Symptoms

Symptoms include:

• Extreme concern over body weight or body shape

• Eating large quantities of food over a short time period (binge eating), usually in secret

• Following binge eating with purging -self-induced vomiting or the use of laxatives, diuretics, enemas or suppositories - or with fasting, restrictive dieting or excessive exercise

Bulimia can lead to:

• Apathy, poor concentration

• Tooth erosion and decay

• Constant sore throat

• Muscle weakness

• Bone pain with exercise

• Low blood pressure

• Irregular heartbeat

• Swollen salivary glands

• Constipation or other bowel problems

• Gastrointestinal problems, such as bloating, heartburn or acid reflux

• Fertility problems