I'm sure with the name of IMResident he must be an Internal Medicine resident. Or plays one on TV.

I think his point with his story of his Mom is that he thinks people will assume their problem is gluten sensitivity and not keep looking for other answers. But when you're a patient and you can't get a doctor to take you seriously you've got to look for your own answers. I can't tell you how many stories I hear of people with extremely severe disease who find their own diagnosis because doctors leap to the antidepressants or labeling the patient as nuts.