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Asthma cases in Americans are about 75% higher today than they were in 1980.
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There are 20 feet of blood vessels in each square inch of human skin.
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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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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.