Here we go again. I once said that, in the wake of study after study that fails to find activity of various “complementary and alternative medicine” (CAM) beyond that of placebo, CAM advocates are now in the midst of a “rebranding” campaign in which CAM is said to work through the “power of placebo.” Personally, I’ve argued that in reality this new focus on placebo effects as the “mechanism” through which CAM “works” is in reality more a manifestation of the common fantasy that wishing makes it so.
None of this, of course, can stop everybody’s favorite apologist for “complementary and alternative medicine” (CAM) and, in particular, using placebo effects therapeutically, from continuing to do what he does with a study that’s been widely reported in the news and even featured on Science Friday last week. Basically, it’s a study in Science Translational Medicine, in which our old friend Ted Kaptchuk teamed up with an investigator interested in migraines, Rami Burstein, to do a study that finds that believing a medicine will work can have a strong effect on its actual activity on migraine. As is the case with most studies in which Kaptchuk is involved, it’s mildly interesting from a scientific standpoint. Unlike most studies in which he is involved, Kaptchuk seems a bit more able to tone down the hyperbole, which is a good thing. Unfortunately, this study, as much as it’s being touted by the press as providing new information on placebo effects, really doesn’t tell us much that is new. (more…)