Is the placebo effect in the genes?

The placebo response may be influenced by genetic variations in brain signalling pathways say researchers who suggest ‘no-treatment controls’ be added to future clinical trials. Writing in Trends in Molecular Medicine Kathyrn Hall and colleagues from Beth Israel Deaconess Medical Center in Boston said previous research had shown that the dopamine, opioid, endocannabinoid, and serotonin pathways ...

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