The only thing I ever hurt badly while skating was my heels, bailing down a huge double set in Rochester, NY. I only bruised the bones badly, at that. I hit so hard that I actually bounced off them. i just don't get how kids these days are kickflipping 20 stairs.
I don't drink milk, so I don't know what the deal is. My ankles are both fucked now, just from rolling them a lot, but everything else seems to be in proper working order. At one point i was skating with an ankle brace, but that's it.