Good point Wry,
Many people lump all treatments (western and CAM) together and say "well if this was proven/disproven all must be proven or disproven" There are western methods that are not "entirely proven" yet they work better than other medical alternatives. This can also be the case with some CAM therapies while in lab results they are not entirely "proven" they work and (in some instances) are better than other western (or even other CAM) alternatives.
Take for example the common cold, western therapies are (usually, but this trend is changing in the US) quick to prescribe Antibiotics, regardless of whether the condition is Viral, Fungal, or bacterial. While I AGREE this is can be effective 100% of the time as tx (only if it is bacterial), it is 0% effective if viral, fungal (or could even be parasites). But ultimately both ways are destructive to the human body and enviornment.
It is destructive to the human body b/c antibacterials are not specific, in other words it is a "shotgun" approach killing all bacteria within the human body. This includes good intestinal floura that is vital for digestion etc. It is like using a bacterial nuclear bomb.
For the enviornment it is starting to show up that Antibiotics are in our water supply, bacteria will evolve to survive and this in turn in making "super bugs" that modern antibiotics cannot deal with. In fact, "super bugs" from hospitals can be extremely deadly and is responsible for quite a few deaths after being in a hospital even for simple procedures. This also does not mention all the side effects possible with synthetic drugs.
http://en.wikipedia.org/wiki/Antibiotic_resistance
Now where herbal medicine and acupuncture come in for the common cold is mostly herbal formulas. For example we would use one formula known as Yin Qiao San, this herbal formula has 10 different herbs in it, of which 6 at least are shown to have Anti-viral, Anti-bacterial, and anti-parasitic effects. B/c these are not in strong doses or high concentrate we are able to have 6 different Anti-s within the formula.
This is beneficial b/c it makes it impossible for the bacteria or virus to evolve to numerous Anti-bacterial/viral components. Also as far as common cold goes, if it is viral, bacterial or parasitic (even fungal with this particular formula) it will have an effect. Though, it does still remain that this is not "bacteria specific" and will also damage intestinal flourna, though at a much smaller rate, b/c of lower concentrations.
Also enviornmentally, these are nothing but plants, so when they do go into water or earth supplies they are merely absorbed and broken down b/c there are no synthetic materials to them. On a grander scale, (granted herbal medicine is easier to prove) this is an example where a CAM therapy can be a better alternative to western meds. In addition to these there is the cost factor as well.
CK,
Isn't that part of the discussion though? Wouldn't placebo effect fall under someone's belief structure? So maybe shamanism would heal them via placebo effect and if placebo effect is estimated to account for 1/3 of the effect of all txs then it belief would fall under 33% of all trials. To that individual that belief is true b/c it worked for them.
http://en.wikipedia.org/wiki/Placebo_effect
B/c of such a high estimate for placebo effect doesn't this mean at BEST that all clinical trials can only show a 66% effective rate? Even for this to be true, that means then that the medicine would be 100% effective as the rest is placebo. But this is not the case as usually you have trials where anywhere between 10-25% are not helped.
So being generous most things shown in trial for medicine are 56% effective, slightly better than half. This is being generous, so to somewhat answer your question ( I know you did not really mean it as a question ) Yes, I think belief plays a major role in all clinical trials and medicines.