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Did you know?
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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There are more bacteria in your mouth than there are people in the world.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Medication errors are more common among seriously ill patients than with those with minor conditions.