10 Amazing Blood Facts

10 Amazing Blood Facts

1.Greek physician Galen believed that sickness was caused by too much blood and that draining some blood would help balance the humors. This belief lasted for centuries.

2. An average adult has about 4.7 liters, or 5 quarts, of blood. That's equivalent to about 13 cans of soda.

3. According to Greek mythology, Medusa had two types of blood. The blood on her left side was lethal, while the blood on her right side gave life.

4. Human bone marrow produces 2 million red blood cells every second.

5. The cornea has no blood supply, which helps keep it clear for vision.

6. When Pope Innocent VIII was dying at the end of the 15th century, his physicians allegedly bled three young men to death and fed their blood to the pope. They believed the blood would pass on their youthful health.

7. Because blood is more than just a liquid and contains living cells, it is actually considered a tissue.

8. Shakespeare used the word "blood" over 40 times in his play MacBeth, and he used it at least once in every play.

9. Pus is white blood cells that died fighting an infection.

10. Red blood cells live for about 4 months, platelets for 9 days, and white blood cells range from a few hours to a few years.

For more interesting blood facts, check out our blood article here: https://www.factretriever.com/blood-facts

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