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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.