Which symptom is associated with anorexia nervosa?

Excessive exercise is commonly associated with anorexia nervosa as individuals suffering from this eating disorder often engage in high levels of physical activity as a means to control their body weight or shape. This compulsive behavior can be driven by an intense fear of weight gain and a distorted perception of body image, leading them to exert themselves physically in unhealthy ways.

In contrast, while loss of balance, diarrhea, and vomiting can occur in individuals with various medical conditions, they are not defining symptoms of anorexia nervosa. Loss of balance might be influenced by factors such as malnutrition or electrolyte imbalances but is not specific to anorexia. Diarrhea may occur due to numerous gastrointestinal issues but does not directly relate to the core behaviors or symptoms of anorexia. Vomiting can sometimes occur, particularly if purging behaviors are present, but it is not a primary symptom associated specifically with anorexia nervosa itself. Therefore, excessive exercise stands out as a key behavior in the context of this serious eating disorder.