Lose weight, improve your vision, and more with… the placebo effect!

You probably associate the placebo effect with sugar pills. But according to these studies, the placebo effect is way more powerful than that: in fact, it can affect everything from weight loss to visual acuity. In the first study, hotel housekeepers who were told that their work was good exercise actually lost weight compared to a control group, even though their behavior did not change. In the second study, participants’ visual acuity improved when they simply acted as pilots (who they wer

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