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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
On average, the stomach produces 2 L of hydrochloric acid per day.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Illicit drug use costs the United States approximately $181 billion every year.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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