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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
The human body produces and destroys 15 million blood cells every second.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Thyroid conditions may make getting pregnant impossible.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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