National Center for Complementary and Integrative Health (NCCIH)
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Placebo Effect

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Open pill bottle, pills spilling out.

Photo Credit: Photodisc

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.

This page last modified January 27, 2015