You searched for: “adipomania
adipomania (s) (noun), adipomanias (pl)
An unhealthy process of putting on excessive weight or fatness by excessive eating of fat-producing foods: Many people who suffer from adipomania eat snacks, cake, cookies, sausages, deep-fried French fries, etc. in an uncontrollable way and in great quantities.
A fat man thinks he is physically well developed.
Word Info image © ALL rights reserved.

Could this guy also have a significant obsession known as callomania, or the delusion that a person thinks he or she is "beautiful" or, in this case, physically well developed and handsome?