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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.