Expensive Placebos Work Better than Cheap Ones

January 30, 2015 8:22 PM

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The power of placebos has long been known. People who believe that they are taking an effective drug frequently feel better. In fact, prior to the discovery of penicillin, it is likely that the placebo effect accounted for much of the benefit of medical care.

The study enrolled 12 patients with moderate to severe Parkinson’s disease. They were told that they were going to be given two new injectable medications for Parkinson’s that increase dopamine levels. They were told that the medications were believed to work equally well, but because of differences...

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