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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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Your heart beats over 36 million times a year.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.