10 Scientists Who Experimented on Themselves 2.3k views
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A man named Stan Larkin once hit the headlines by surviving for 555 days without a heart. While waiting for a transplant, the then 25-year-old had to always carry around an artificial heart device in a backpack to pump the blood in his body. In 2016, after finally receiving a heart transplant, Larkin was taken off of the device.
![Picture A Man Survived Without A Heart For 555 Days](https://unbelievable-facts.com/wp-content/uploads/2022/03/64e87d53-a716-4edc-81c7-328672f74f3d-1920-1080_optimized-450x300-c-default.jpg)
Image credits: University of Michigan Health System/CNET
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