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Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The horizontal fraction bar was introduced by the Arabs.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.