Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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The human body produces and destroys 15 million blood cells every second.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.