The emotional aspect associated with anorexia nervosa includes:

Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to self-imposed starvation and excessive weight loss. The emotional aspect of this disorder is profound and often includes feelings of sadness. Individuals with anorexia may experience not only low mood but also anxiety and a pervasive sense of worthlessness, which can stem from societal pressures and personal perceptions of their body image.

Sadness in this context can be multifaceted; it may arise from the individual's struggle with their self-image, the physical effects of malnutrition, and the isolation that often accompanies the disorder. Individuals may also feel disconnected from their emotions or surrounding social interactions due to their preoccupation with food and body weight.

The other options present less direct emotional connections to anorexia nervosa. Binge eating is more commonly associated with binge eating disorder, malaise, which refers to a general feeling of discomfort or unease, does not capture the specific emotional struggles tied to anorexia, and excessive sweating is a physical symptom that can occur for various reasons but is not a primary emotional aspect of this eating disorder. Thus, sadness best encapsulates the emotional elements prevalent in individuals suffering from anorexia nervosa.