By Dr. Mercola
In assessing the validity of medical trials, an inactive control, or placebo, is considered essential in producing high-quality evidence. Randomized double-blind, placebo-controlled studies are, in fact, considered to be the “gold standard,” as good as it gets in terms of epidemiologic studies.1 The assumption here is that the placebo is inert, i.e., is a substance that has no effect on your body.
The reason this is an assumption is that, typically, the contents of the placebo in a study are not disclosed — not to the subjects of the study nor in the subsequent peer-reviewed journal publication.
This leaves much room …read more
Source: mercola
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