Something Weird Is Going On With Placebos

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For the past few decades, something strange has been happening in clinical trials. Painkillers aren't getting worse, but the placebos they're tested against appear to be getting better. In one landmark study, the advantage of pain medication over placebo shrank from 27.3% in 1996 to just 8.9% in 2013. Even stranger? This trend was found almost entirely in American trials.In this episode of The Rest Is Science, Professor Hannah Fry and Michael Stevens (Vsauce) investigate the extraordinary…