Why Pigs Are So Important in Human Medicine and Organ Transplants
Chimpanzees are far closer to humans genetically, but pigs share several important anatomical and physiological features with us. Their hearts, kidneys, skin, digestive systems and blood-pressure patterns are similar enough to make them valuable in medical research. Pig heart valves have been used in humans for decades, while pig skin can serve as a temporary covering for severe burns. Before laboratory-produced insulin became common, insulin from pigs was also used to manage diabetes. Scientists are now developing genetically modified pig hearts and kidneys for xenotransplantation, the use of animal organs in humans. These organs could help address the shortage of human donors, although immune rejection, infection risks and animal-welfare concerns remain serious challenges.
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