I don't know why someone downvoted you, that's an excellent point. I think that in some subset of people currently requiring medication, some may be able to replace it with exercise to successfully treat it. I don't know about other people, but though I need both medication and exercise, the latter makes me feel discernibly much better. The medication just gets me out of bed and into my running shoes.

Yes, and I said exactly that. I do appreciate the link to the journal article though; I should have included that.