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Did you know?
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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There are 60,000 miles of blood vessels in every adult human.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.