Overview

Bulimia nervosa is a serious eating disorder characterized by repeated episodes of binge eating followed by behaviors intended to prevent weight gain. These behaviors may include self-induced vomiting, misuse of laxatives or diuretics, fasting, or excessive exercise. People with bulimia often feel a loss of control during binge episodes and experience intense concern about body weight and shape. The condition can affect physical health, mental well-being, and daily functioning.

Symptoms

Symptoms of bulimia nervosa can be physical, behavioral, and emotional. Common symptoms include:

  • Recurrent episodes of eating large amounts of food in a short time

  • Feeling out of control during binge eating

  • Purging behaviors such as vomiting or laxative use

  • Frequent dieting, fasting, or excessive exercise

  • Swelling of the cheeks or jaw area

  • Sore throat or dental problems from repeated vomiting

  • Feelings of shame, guilt, or secrecy around eating

Causes

The exact cause of bulimia nervosa is not fully understood, but it is believed to result from a combination of factors. Possible causes include:

  • Psychological factors such as low self-esteem, anxiety, or depression

  • Social pressure related to body image and weight

  • Biological or genetic vulnerability

  • Stressful life events or trauma

  • Cultural emphasis on thinness

These factors interact to influence eating behaviors and coping mechanisms.

Risk factors

Several factors may increase the risk of developing bulimia nervosa:

  • Adolescence or young adulthood

  • Female sex, though males can also be affected

  • Family history of eating disorders or mental health conditions

  • History of dieting or weight-related teasing

  • High levels of stress or perfectionism

Complications

If left untreated, bulimia nervosa can lead to serious medical and psychological complications:

  • Electrolyte imbalances that may affect heart rhythm

  • Gastrointestinal problems, including inflammation or tears

  • Dental erosion and gum disease

  • Dehydration and kidney problems

  • Mental health issues such as depression or anxiety

  • Increased risk of substance misuse

Early treatment improves recovery and reduces long-term health risks.

Prevention

There is no guaranteed way to prevent bulimia nervosa, but certain strategies may reduce risk and support early intervention:

  • Promoting a healthy relationship with food and body image

  • Encouraging open conversations about mental health

  • Reducing exposure to unrealistic body standards

  • Seeking help early for disordered eating behaviors

  • Supporting stress management and emotional coping skills

Awareness, early recognition, and access to professional care are key to preventing complications and supporting recovery.


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