13 Interesting Facts About Human Blood

After needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen, which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.

It was a tradition in Ireland that if you donated a pint of blood, they’d give you a pint of Guinness to replace the iron.

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