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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 human body produces and destroys 15 million blood cells every second.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.