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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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