@Germlat,
The British Journal of General Practice is bargain basement? Also, you know, attacking the source is a well-known logical fallacy. Attack the data, the structure and/or validity of the argument, yes, but the source is irrelevant to the strength of the argument.
So your point is that people think it's harmless. Some people think it's harmless and others - yourself, apparently - don't. I admit that I don't know. What people think is ultimately less important than what the science reveals, I think. I'll wait for a significant scientific consensus before deciding.