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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.
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There are approximately 3 million unintended pregnancies in the United States each year.