The placebo effect is a beneficial health outcome resulting from a person’s anticipation that an intervention—pill, procedure, or injection, for example—will help them. A clinician’s style in interacting with patients also may bring about a positive response that is independent of any specific treatment.
According to a recent study published in the journal PLoS One, placebos given without deception improved symptoms of irritable bowel syndrome (IBS).
Source: http://nccam.nih.gov/news/2010/122210.htm?nav=rss
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