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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Excessive alcohol use costs the country approximately $235 billion every year.

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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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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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