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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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There are approximately 3 million unintended pregnancies in the United States each year.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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