Abstract

LAM DIAZ, Rosa María  and  HERNANDEZ RAMIREZ, Porfirio. Placebo and placebo effect. Rev Cubana Hematol Inmunol Hemoter [online]. 2014, vol.30, n.3, pp.214-222. ISSN 0864-0289.

Placebo is an intervention designed to simulate a medical therapy, which has no specific effects for the condition that is being applied. The placebo effect is the change, often physiologically provable, which is produced in the body as a result of a psychological stimulus induced by the administration of an inert substance, a drug or a treatment. We hereby include the definition of placebo, the origin of this word, the factors and mechanisms involved in the placebo effect, and the use of placebos in medical practice and clinical research.

Keywords : placebo; placebo effect; clinical research; controlled clinical trials.

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