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Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Your heart beats over 36 million times a year.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.