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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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The human body produces and destroys 15 million blood cells every second.