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Leonardo da Vinci was among the first to investigate coronary arteries and their functions. Even though he had no training, he started to interest in researching heart disease.
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Humphrey Davy found that nitrous oxide not only made him laugh, but it also made him feel less pain. This discovery led to the advancement of creating stronger anesthesia for bigger operations.
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The first electronic hearing aid was created while a carbon transmitter to allow the aid to be portable. Miller Reese Hutchison called it Akouphone. This led to further development in aids for the hard of hearing.
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James B. Herrick concluded that the gradual narrowing of the coronary arteries could be a cause. This led to further understanding of heart disease.
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Aldred Scott Warthin first identifies the link in hereditary to certain colon cancers. This led to us now being able to determine carries in children of colon cancer victims.
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Canadian physician Banting and medical student Best, discovered the hormone insulin leading to helping diabetes victims.
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Dr. Austin Moore performed the first metallic hip replacement leading to the advancement of safely and effectively replacing hips.
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Jacob Gershon Cohen used mammography to screen women for signs of breast cancer.
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It was first used clinically in 1956 in Glasgow, but wasn't used in America until the 1970s. Ultrasounds allowed doctors to tell expected mother's their child's gender, health problems/concerns, and even left the mother's with a keepsake photo.
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First vaccine for Lyme disease is developed.
