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The human body produces and destroys 15 million blood cells every second.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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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.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.