The Don said:
Put it this way ANYTHING which has an effect on the human body is potentially dangerous.
Exactly. It's relatively easy to avoid undesirable effects when the preparation you're using doesn't have any effect of any description.
I saw a very good analogy in a thread on one of the boards Kumar would rather we didn't go lurking in. There is a homoeopath there who consistently responds to any criticism of homoeopathy by banging on about the thalidomide affair (from more than 40 years ago). One poster replied pointing out that, obviously, safety and efficacy are two different properties. He then introduced the analogy of cutting down a tree. A chain saw is an effective instrument for that job. However, a chain saw is also dangerous. A feather is not dangerous (unless you happen to be allergic to feathers, I suppose). However, a feather is not effective for cutting down a tree. The homoeopaths are in the business of trying to cut down trees with feathers. When we point out that feathers aren't very good at this, the response "but chain saws are dangerous" seems to be the best they can do.
Of course it's not that simple. Trees don't often fall down of their own accord. If you had enough patience, of course you could claim that the feather was effective, because in the end, I suppose, the tree would eventually fall down. But you'd need a pretty extended life span to make that one fly. However, the self-repair mechanisms of the mammalian body are quite prodigious. And even chronic diseases often wax and wane in a most confusing manner. It's astoundingly easy to convince yourself that an ineffective intervention has been effective, and homoeopathy has no monopoly on that.
This is why controlled trials are designed for real medicines, so that we can as far as possible eliminate the effects of natural recovery, natural fluctuation in the course of the condition, and clinician wishful thinking, on our assessment of the benefits. However, homoeopathy rejects the controlled trial (except for the few small studies which managed to fluke a positive result, of course!).
Argumentum ad populum (surely so many people can't be mistaken) is simply rubbish in this context. Millions of people believe in astrology, too! (I was trying to find the homoeopathy thread in which the possibility of using astrological signs to divine the correct homoeopathic remedy was apparently being seriously discussed, but I can't trace it among the heap of woo-woo - as I said, so much fruitcake, so little time! Anyone who knows where it is, please link.)
And it's not that simple in another way too. Homoeopaths believe in something called "homoeopathic aggravation", or "Hering's Law", in which the remedy may exacerbate the situation for a variable time before the "cure" sets in. The initial reason for this goes back to the early work of Hahnemann, when he often used real quantities of really poisonous substances. He then started diluting them out, and "discovered" that the adverse effects faded, while the "healing" effects remained. This is hardly surprising, as the adverse effects were real and the healing effects were delusional. However, the thing has perpetuated in homoeopathic theory, so that now when a patient deteriorates after the remedy is given, this is attributed to the remedy - sort of "the bad's coming out", as if a boil had burst.
Another explanation for an apparent adverse effect of a homoeopathic remedy is that the patient is exhibiting a "proving" of the remedy, something which would be experienced by members of a healthy proving group in the process of finding out which "like" this stuff might be thought to cure. A third excuse, for when the patient has deteriorated after discontinuing "allopathic" treatment to switch to homoeopathy, is that the antibiotic (or whatever) has simply suppressed the disease (which is bad), and the homoeopathy has now allowed the natural expression of the symptoms (which is good.

)
If you trawl the homoeopathy discussion boards you can find plenty of examples of these (then of course when you want to link to them they've vanished and you get distracted by even newer and better woo-woo....). It's interesting that there's so much of it when unfiltered discussion of real cases is monitored, whereas if you just read the cases these people publish you see very little assumption of adverse effects.
Of course, if these were really effects of the magic water, it would be vitally important to carry out safety tests. In one of the threads I can't find, someone reported that her mother's skin condition had become very much worse indeed after a remedy, so that she was scratching her skin until it bled. This was either Hering's Law or a proving, I forget which. Some sceptic then remarked that if a homoeopathic remedy could cause reactions like that, any claim that this method is safe is a pack of lies.
The reason that no safety tests are required is of course that the deteriorations are either the normal course of the disease, or the consequence of discontinuing effective treatment to switch to homoeopathy. Even the "proving" symptoms can't be shown to exist in blind testing. The fact is that whatever you do, the patient will either improve, stay the same, or get worse. Homoeopathy has answers for every eventuality, it just doesn't like to dwell on its explanations for the "get worse" situations, as that might raise embarrassing questions in relation to safety. And of course none of the explanations involves the possibility that homoeopathy might not be effective.
Rolfe.