http://www.skepdic.com/placebo.html
The placebo effect is the measurable, observable, or felt improvement in
health not attributable to treatment. This effect is believed by many people
to be due to the placebo itself in some mysterious way. A placebo (Latin for
"I shall please"😉 is a medication or treatment believed by the administrator
of the treatment to be inert or innocuous. Placebos may be sugar pills or
starch pills. Even "fake" surgery and "fake" psychotherapy are considered
placebos.
Researchers and medical doctors sometimes give placebos to patients.
Anecdotal evidence for the placebo effect is garnered in this way. Those who
believe there is scientific evidence for the placebo effect point to
clinical studies, many of which use a control group treated with a placebo.
Why an inert substance, or a fake surgery or therapy, would be effective is
not
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