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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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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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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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Thyroid conditions may make getting pregnant impossible.
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Illicit drug use costs the United States approximately $181 billion every year.