Walks like a duck

[drwex]

and sure as hell quacks like a duck: "Glucosamine No Remedy for Lower Back Pain, Says Study"

I know, this will completely fail to dissuade the many who swear by it, including friends of mine who are perfectly happy to claim to be "reality-based" when it comes to disagreeing with Dubya but don't find certain scientific bits of reality convenient. But I can't resist pointing this sort of thing out anyway.