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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
There are more sensory neurons in the tongue than in any other part of the body.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.