23 October 2012 Last updated at 20:48 ET
Placebo effect may be 'down to genes'
Placebo acupuncture looks real, but the needles don't go into the body
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Why some people respond to treatments that have no active ingredients in them may be down to their genes, a study in the journal PLoS ONE suggests.
link-
http://www.bbc.co.uk/news/health-20042128