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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Vaccines prevent between 2.5 and 4 million deaths every year.