Blood Facts

• Two million red blood cells die every second.

• There are approximately 100,000 miles of blood vessels in the human body.

• Seven percent of a humans body weight is made up of blood.

• In the early nineteenth century some advertisements claimed that riding the carousel was good for the circulation of blood.

• Each day 400 gallons of recycled blood are pumped through the kidneys.

• By donating just one pint of blood, four lives can be saved.

• Blood is such a good stain that Native Americans used it for paint.

• The kidneys filter over 400 gallons of blood each day.

• The average life span of a single red blood cell is 120 days.

• Blood accounts for about 8% of a human's body weight.

• A woman has approximately 4.5 liters of blood in her body, while men have 5.6 liters.

• Your blood takes a very long trip through your body. If you could stretch out all of a human's blood vessels, they would be about 60,000 miles long. That's enough to go around the world twice.

• Half your body’s red blood cells are replaced every seven days.

• If all the blood vessels in your body were laid end to end, they would reach about 60,000 miles.