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Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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The human body produces and destroys 15 million blood cells every second.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

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