For one thing, religion innately demands expansion (evangelism is nothing but expansion in another form). You're obligated to gain land, converts, and wealth on behalf of your religion. Science does not require expansionism in the least. Science wars only exist in fiction and the imagination, but religious wars were an everyday thing in Europe, and still are an everyday thing in the Middle East.
Religion has also done as much to spread disease as it has to treat it. For example, it's well known that in the middle ages of Europe, legitimate medical practitioners not affiliated with the dominant Christian sect were oppressed and silenced, while Church authorities who were several generations behind their pagan colleagues continued to rely on prayer and other extremely questionable treatments. I would also point out that it wasn't religion which discovered penicillin and ran the clinical trials which proved its effectiveness beyond doubt, thus saving billions of lives around the world.
Mental disorder is more a matter of opinion, of course, since what is a disorder to some is not a disorder to others. Thus, it's difficult to pull out specific events which say "science is responsible for X mental disorder while religion is responsible for Y disorder!" but I gotta say, I find things like the inquisition, the outright denial of evolution, and forcing homosexual children to to apply electric shock to their own genitalia to be far more indicative of mental disorder than even the worst practices science has ever cooked up (lobotomy?).
Edited 1 time(s). Last edit at 03/22/2013 12:59PM by vortexmagus.