Final answer:
Bulimia nervosa is a mental disorder characterized by binge eating followed by purging through various methods such as vomiting or excessive exercise. It can lead to serious health problems and requires professional help.
Step-by-step explanation:
Bulimia nervosa is a mental disorder characterized by episodes of binge eating followed by attempts to compensate for the excessive amount of food that was consumed. These compensatory behaviors can include vomiting, using laxatives, exercising excessively, or other methods. People with bulimia nervosa may have normal weight but often have serious health problems such as electrolyte imbalances and irregular heartbeat. It is important to seek professional help if you or someone you know is struggling with bulimia nervosa.