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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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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Everyone has one nostril that is larger than the other.
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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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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.