Blood Facts

Lobsters have blue blood.

It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.

10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.

Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.

It takes about 20 seconds for a red blood cell to circle the whole body.

Your body is creating and killing 2 million red blood cells per second.

Your heart pumps about 2,000 gallons of blood each day!

Spiders have transparent blood.

The average adult human body contains about 3 to 5 grams of iron, which is enough to make a small nail, though this iron is not in metallic form but integrated into biological molecules.

The human heart creates enough pressure to squirt blood 30 ft.

Only female mosquitoes bite and drink blood.

The heart pumps about 1 million barrels of blood during an average lifetime!

You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.

Your body is creating and killing about 2.4 million red blood cells per second.

At one 'feeding', a mosquito can absorb one and a half times its own weight in blood.

If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.

Scientists in the UK developed a smartphone dongle that could test for STIs including HIV and syphilis in just 15 minutes, using a small blood sample and delivering results directly to the phone.

In Sweden, blood donors receive a text message whenever their blood is used to save someone's life.