25-year-old goes 555 days without a heart

Without a heart to pump oxygenated blood around the body, you die pretty quickly. Transplants though, are hard to come by, which is why scientists are looking into using CRISPR to allow pigs to host human-like hearts. In the meantime, however, one 25-year-old man has proved that it's possible to live over a year while literally heartless.
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