It is Chemo, my first answer was incorrect. Possibly because the question is partially misleading.
Answer:
Psychological Disorder
Explanation:
Eating Disorders describe illnesses that are characterized by irregular eating habits and severe distress or concern about body weight or shape. ... The most common forms of eating disorders include Anorexia Nervosa, Bulimia Nervosa, and Binge Eating Disorder and affect both females and males.