103 Interesting Human Body Facts


Human body is not as simple as it looks. There are many facts about the human body which will make you wonder how complex yet simple our body is.
Human Body
Human Body

Interesting Human Body Facts.

  1. The Cornea in your eyes is the only body part, which does not receive blood from the body. It takes oxygen directly from the air.
  2. The smallest bones in the human body are found in your ear.
  3. On an average the lifespan of a human hair is 3 to 7 years.
  4. There are 26 bones in your foot.
  5. The human liver performs 500 different functions.
  6. Messages from the human brain travel along the nerves at the speed of about 200 miles per hour that is 322 km/hr.
  7. The largest bone in the human body if femur.
  8. The human heart is not on the left-hand side of the body, it's in the middle.
  9. The sperm cells are the smallest cells in the man's body.
  10. The female egg is the largest cell in the human body.
  11. The surface area of human lungs is approximately equal to the size of tennis court.
  12. Your skeleton keeps renewing itself in every ten years.
  13. You lose 80% of body heat from your head.
  14. Women's heart breathes faster than men.
  15. The fastest healing part of your body is your tongue.
  16. A tongue print is absolutely unique.
  17. The strongest muscle in the human body is your tongue.
  18. The little finger contributes to the 50% strength of human hand.
  19. You feel as if you are thirsty when water loss is equal to 1% of your body weight.
  20. Skin is the largest organ making up your body.
  21. 90% of the total Calcium found in the human body is contained in the teeth.
  22. Index finger is the most sensitive finger.
  23. The human heart size is approximately equal to the size of one's fist.
  24. The average human brain contains around 78% water.
  25. You have no sense of smell when you're sleeping.
  26. The number of bacteria in a person's mouth is equal to the number of people living on Earth, or even more.
  27. Your right lung can take in more air than your left lung.
  28. The total length of all the nerves in the human body is 75 kilometers.
  29. Scientists say the higher your I.Q. the more you dream.
  30. Human beings are the only living things that sleep on their backs.
  31. Babies start dreaming before they are born.
  32. Within three days of dying the enzymes that digested the food in the person's body, will begin to digest the person's body.
  33. The average life span of a sperm is about 36 hours.
  34. The hyoid bone in your throat is the only bone not linked to any other bone in the human body.
  35. Our eyes remain the same size as they were at birth, while our ears and nose continue to grow throughout our lifetime.
  36. Each one of us has around 2,000 taste buds.
  37. Your forearm and your foot are of the same length.
  38. 7% of people are left-handed.
  39. Human beings breathe approximately 20,000 times in a day.
  40. Your thigh bones are stronger than concrete.
  41. Babies are color blind when they are born, so they only see black and white.
  42. There are 22 bones in your head.
  43. The heart beats 35 million times in a year.
  44. Human liver has more than 500 functions.
  45. It is impossible to sneeze with your eyes open.
  46. Hydrogen, Nitrogen, Carbon and Oxygen make up 90% of your body.
  47. The most common disease in the human body is tooth decay.
  48. Teeth are the only body parts of the human body which cannot heal themselves.
  49. About 1,00,000 chemical reactions occur in the brain every second.
  50. Every day the human body loses about one million skin cells, that is approximately 2 kg per year.
  51. You can't tickle yourself.
  52. Facial hair grows faster than any other hair on the body.
  53. Human hair is virtually indestructible.
  54. Frequent washing hair does not cause hair loss.
  55. Blood is 6 times thicker than water.
  56. Women's hair is about half the diameter of men.
  57. The most common blood type in the world is Type O.
  58. The human eye can distinguish 10 million different colors.
  59. Your fingernails grow faster than your toenails.
  60. At birth, a child's body is made up of around 300 bones. But as he becomes an adult, the bones are reduced to 206 numbers.
  61. It takes 17 muscles to smile and 43 to frown.
  62. By the age of 60, most people lose half of their taste buds.
  63. Human bones are 5 times stronger than steel.
  64. Your ear secrete more earwax when you are afraid than when you aren't.
  65. Nails and hair do not continue to grow after we die.
  66. Babies are always born with blue eyes.
  67. We have tiny mites living in our eyelashes.
  68. The speed of your sneeze is 160 km/hr.
  69. The brain is more active at night than during day.
  70. After you eat too much, your hearing becomes less sharp.
  71. Stomach acid can dissolve metal.
  72. Yawning brings more oxygen to the lungs.
  73. Your stomach manufactures a new lining every three days to avoid digesting itself.
  74. If your stomach acid falls on your skin, it would burn a hole in it.
  75. If the entire DNA in your body were uncoiled, it would stretch out to about 10 billion miles, which is from Earth to Pluto and back.
  76. A fetus acquires fingerprints at the age of three months.
  77. Women's heart beat faster than men's.
  78. Our body produces two to four pints of saliva in a day.
  79. If you blink one eye you move over 200 muscles.
  80. Humans are the only animals in the world who cry tears.
  81. Humans shed about 6,00,000 particles of skin every hour. That is approximately 1.5 pounds every year.
  82. The human body has enough fats to make seven bars of soap.
  83. Embryos develop fingerprints three months after conception.
  84. The medical name for ear was is cerumen.
  85. When you blush, your stomach also turns red.
  86. The human brain uses just as much as power as a 10-watt light bulb.
  87. An adult human body is made up of about 7 octillion atoms.
  88. Omphalophobia is the fear of navel.
  89. Your skull is made up of 29 different bones.
  90. At least 700 enzymes are active in the body.
  91. The fragrance of apples and bananas can help a person lose weight.
  92. Wisdom teeth serve no purpose.
  93. Humans are the only animals with chin.
  94. The human nose can detect about 1 trillion smells.
  95. You have 2 kidneys, but only 1 is necessary to live.
  96. Humans are bio-luminescent, the light just isn't perceptible to the human eye.
  97. In case of extreme starvation, the brain will begin to eat itself.
  98. The average person breaths about 20,000 times a day.
  99. A kiss increases a person's pulse to beat 100 beats per minute.
  100. You can lose 150 calories per hour if you hit your head against the wall.
  101. You are taller in the morning than you are at night.
  102. In camera terms, human eye is about 576 megapixels.
  103. Hair grows fast - about 6 inches per year. The only other thing in the body that grows faster is bone marrow.
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