About a year ago the editors of Anesthesia & Analgesia solicited a written debate on whether or not acupuncture is effective or simply an elaborate placebo. Four experienced acupuncture researchers agreed to write the pro-acupuncture article, Wang, Harris, Lin and Gan.
The article is fortunately published in open access, and so I can reprint it here (full article is below). What I think David and I convincingly demonstrated is that, according to the usual standards of medicine, acupuncture does not work.
Let me explain what I mean by that. Clinical research can never prove that an intervention has an effect size of zero. Rather, clinical research assumes the null hypothesis, that the treatment does not work, and the burden of proof lies with demonstrating adequate evidence to reject the null hypothesis. So, when being technical, researchers will conclude that a negative study “fails to reject the null hypothesis.”
Further, negative studies do not demonstrate an effect size of zero, but rather that any possible effect is likely to be smaller than the power of existing research to detect. The greater the number and power of such studies, however, the closer this remaining possible effect size gets to zero. At some point the remaining possible effect becomes clinically insignificant.
In other words, clinical research may not be able to detect the difference between zero effect and a tiny effect, but at some point it becomes irrelevant.
What David and I have convincingly argued, in my opinion, is that after decades of research and more than 3000 trials, acupuncture researchers have failed to reject the null hypothesis, and any remaining possible specific effect from acupuncture is so tiny as to be clinically insignificant.
In layman’s terms, acupuncture does not work – for anything.
This has profound clinical, ethical, scientific, and practical implications. In my opinion humanity should not waste another penny, another moment, another patient – any further resources on this dead end. We should consider this a lesson learned, cut our losses, and move on.
I suspect, however, human nature being what it is, that this will not happen anytime soon.
Read the entire article Acupuncture Is Theatrical Placebo (Anesthesia & Analgesia).
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