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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.