Marlon, a 22-year-old college student, has recently discovered that if he makes himself vomit after every other meal he will lose weight and become more slender. After doing this for 3 weeks, he shares this revelation with his friend Duane, to which Duane responds, "Man, I never thought of you as bulimic!" Which is an accurate response to Duane's statement?

The binge-purge cycles of bulimia nervosa must be present for at least 3 months in order to be diagnosed.        

Explanation:

Bulimia nervosa: In abnormal psychology, the term "bulimia nervosa" is also referred to as "bulimia", and is described as an individual experiencing eating disorder and is distinguished as binge eating which is generally followed by the feeling to purge.

Bulimia is most often associated with several other mental illnesses including anxiety, depression, etc.

Signs: Self-induced vomiting, irritability, various episode of binge eating, etc.

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