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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
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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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On average, the stomach produces 2 L of hydrochloric acid per day.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.