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There are more bacteria in your mouth than there are people in the world.
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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.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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The horizontal fraction bar was introduced by the Arabs.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.