Season 3 question about V.M. Varga

Was there any reasoning behind Vargas forced vomiting? Did he just have an eating disorder? He refers to Sy’s wife as “fat” which we later find out she clearly is not. Which leads me to believe he is just simply bulimic. Did I miss something? Is it more than just bulimia? He did a great job at being as repulsive as possible, by the way haha.

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