The placebo response is so powerful that no drug can be marketed in the united states unless it has been evaluated against a placebo. the standard method for so doing is termed a double mind experiment.
A phony drug or procedure intended to have no known therapeutic benefit is called a placebo. Inert pills (like sugar pills), inert injections (like saline), fake surgery, and other treatments are examples of common placebos.
In general, placebos can influence how patients feel about their condition and promote the body's natural painkilling and symptom-relieving mechanisms, but they have no effect on the disease itself. Patients' improvements after receiving a placebo medication may also be brought on by unrelated causes, like regression to the mean (a statistical effect where an unusually high or low measurement is more likely to be followed by a less extreme one).
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