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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.