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Did you know?
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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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Your heart beats over 36 million times a year.