There are 20 feet of blood vessels in each square inch of human skin.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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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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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Sika Deer Female
True-color image of layers of haze in Titan's atmosphere.