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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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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.