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Did you know?
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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If you could remove all of your skin, it would weigh up to 5 pounds.