It is summer, the kids are off, and time to write dwindles in the face of sun and golf. Nonsense knows no season, and in my readings this week I came across the phrase “the undeniable power of the placebo.” I will do my best to deny that power at least three times before I crow my conclusion.
One of my first entries for SBM, back in the mists of time, was the Placebo Myth,1 where I argued that the placebo has no clinical effects, has clinically irrelevant alleged physiology and at most leads to a slight change in perception on the part of the patient that they have less pain. Essentially placebo does nothing. It has no power.
Two studies this month continue that argument: demonstrating that placebo has no practical benefit and the crowing in the media mistakenly trumpets that it does. Reporting on an article from Annals of Family Medicine, the headline on Medscape2 reads “Placebo Effects Modest in Treating the Common Cold.” How modest?