12 Amazing Facts About Blood

  • 108 Millions Blood Donations are collected each year and donation rate are 9 times greater in high-income countries than in Low-income countries.
  • Red Blood Cells Are Constantly replaced as they only Live for average for about 120 days .
  • It takes about 30 seconds for RBC to make a complete circut of your body.In total blood cells take 20 seconds to travel 70,000 miles.
  • A single drop of blood contains about 10,000 white blood cells and 250,000 platelets.Similarly an ounce of blood contains 150 billion Red Blood Cells while in a Pint Of Blood there are about 2.4 trillion blood cells.
  • Our body contains 0.2 milligram of Gold Most of Which is diffused in our blood .It would Take the blood of 40,000 people to make an 8 gram of Gold.
  • 1.3 Million pints of donated blood goes off every year as blood only have 40 days shelf life.
  • During pregnancy to provide blood to the uterus and placenta,a women blood volume increases by 50% .By the end of pregnancy the uterus will receive one fifth of the women’s pre pregnancy blood supply.


  • A new born has around one cup of blood in its Body.Fo Adults blood counts for around 7% of total body weight and average adult has between 4.7-5 litres of blood in their body.
  • Ever wondered why your nose runs when its Cold.Well it happens as a result of nose receiving increased blood flow to warm up this causes the blood vessel to dilate,which in turn produce more mucous.
  • The reason our viens appears ¬†blue through our skin because of the way different wavelength of light peneterate into our skin are absorbed and relfect to your eyes.human blood is never actually blue.
  • Blood Can come in a variety of shades: Oxygen rich blood is bright red while it turns a darker shade of red once it gives up the oxygen and flow back to the heart.
  • Your Blood Group is identified by the antigens and antibodies the blood contains.Almost half of the population of the UK has the blood group O;This Blood Group doesn’t Contain any antigens but does contain both anti-A and Anti-B Antibodies in the blood.



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