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Did you know?
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 longest a person has survived after a heart transplant is 24 years.
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There are 60,000 miles of blood vessels in every adult human.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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