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Did you know?
There are 60,000 miles of blood vessels in every adult human.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.