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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.