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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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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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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
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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.