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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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There are more bacteria in your mouth than there are people in the world.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).