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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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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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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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Illicit drug use costs the United States approximately $181 billion every year.

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