Problem
Johnny is an actor, but hadn't had much luck in landing any gigs. He started eating healthy and exercising to cope with the stress. He was offered the lead in a play shortly afterwards, and he knew it was because of his new physique. He is 6'2" and weighs 140 lbs now! He currently runs 5 miles every morning and goes to the gym for 4 hours in the evening. He eats an apple a day to keep the doctor away and a small salad (which he forcibly throws up after he eats it).
What diagnosis would you give Johnny and why?