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.



Medical Daily




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