Hugh, people dismiss magnet healing because, again, it is cack. There is a wealth of evidence that says that at best magnets contribute towards healing at the same rate as a placebo in a double blind scientific test.
There are one of two scientific reports that suggest a healing effect, but even they say it's impossible whether to determine if these are placebo effects.
Either something is medicine or it is not. If saying the word 'arsewater' ten times while hopping produced a measurably different efficaceous effect from saying the word 'waterarse' ten times while hopping, then fine, it can be called medicine. I certainly have no problem with the notion of wearing a bracelet or whatever per se. Just be able to demonstrate it works.
If magnets could do what is claimed for them then great, but they can't and don't. Again, having an open mind is great, but not if your brain falls out.