Amazing Human Facts

Amazing Human Facts

Abdulkader Rahmo Abdulkader Rahmo

Abdulkader Rahmo

President & CSO at SMSbiotech Regenerative Medicine All comments or posts represent my private opinions not necessarily that of SMSbiotech

发布日期: 2015年11月19日
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  1. There are 60,000 miles of blood vessels in the human body. That's enought to wrap around the world 2 1/2 times.
  2. On average women say 7,000 words per day. Men manage just over 2000.
  3. The strongest muscle in the body is the tongue.
  4. You could remove a large part of your internal organs and survive. The human body may appear fragile but it’s possible to survive even with the removal of the stomach, the spleen, 75 percent of the liver, 80 percent of the intestines, one kidney, one lung, and virtually every organ from the pelvic and groin area. You might not feel too great, but the missing organs wouldn’t kill you.
  5. On any given day, sexual intercourse takes place 120 million times on earth. That's about 4% of the world’s population having sex on any given day.
  6. The earliest human tools have been dated at 2.7 million years old.
  7. One human hair can support 3.5 ounces.
  8. One person in every 2 billion lives to be 116 or older.
  9. It takes about 20 seconds for a red blood cell to circle the whole body.
  10. A human head remains conscious for about 15 to 20 seconds after it is been decapitated.
  11. By 2150 there will be 10 billion humans. In 2000 there were 6 billion.
  12. A kiss for one minute can burn 26 calories.
  13. Every hour one billion cells in the body must be replaced.
  14. It takes 17 muscles to smile and 43 to frown.
  15. Over 40 million Americans have chronic bad breath.
  16. Facial hair grows faster than any other hair on the body.
  17. 70% of the molecular structure in a tree is also human.
  18. 70% of the dust in your home consists of shed human skin and hair.
  19. The hardest bone in the human body is the jawbone.
  20. Constipation is caused when too much water is absorbed in the large intestine and fecies become dry.
  21. The largest cell in the human body is the female egg and the smallest is the male sperm.
  22. About half of the world's population is under the age of 25.
  23. You use 200 muscles to take one step.
  24. There are roughly 3500 hair cells and 30,000 nerve fibers found in the cochlea, a bony structure shaped like a snail's shell that's located deep within the inner ear.
  25. Each square centimetre of human skin on the hand contains about 100 cm of blood vessels and 300 cm of nerve tissue.
  26. Kissing can aid in reducing tooth decay. This is because the extra saliva helps in keeping the mouth clean.
  27. Only 7% of the population are lefties.
  28. Human thighbones are stronger than concrete.
  29. Without its lining of mucus your stomach would digest itself.
  30. Humans generally hear sound waves whose frequencies are between 20 and 20,000 Hz. Below 20 Hz, sounds are referred to as infrasonic, and above 20,000 Hz as ultrasonic.
  31. A full bladder is roughly the size of a soft ball.
  32. It takes twice as long to lose new muscle if you stop working out than it did to gain it.
  33. The tooth is the only part of the human body that can't repair itself.
  34. 1/4 of the bones in your body are in your feet.
  35. We share 98.4% of our DNA with a chimp - and 70% with a slug.
  36. A human liver can still function if 80% of it has been removed. Eventually it will grow back to its original size.
  37. Human hair is virtually indestructible. Aside from it’s flammability, human hair decays at such a slow rate that it is practically non-disintegrative.
  38. 80% of the brain is water. Living brain tissue is a squishy, pink and jelly-like organ thanks to the loads of blood and high water content of the tissue. So the next time you’re feeling dehydrated get a drink to keep your brain hydrated.
  39. As many as 80 percent of men experience enlargement of the prostate, a gland at the base of the bladder that produces fluid needed to transport and nourish sperm. While the problem does not generally affect sexual capacity or enjoyment, it causes more frequent or difficult urination.
  40. The largest internal organ is the small intestine. Despite being called the smaller of the two intestines, your small intestine is actually four times as long as the average adult is tall.
  41. 60.8 million Americans have some form of cardiovascular disease, ranging from congenital heart defects to high blood pressure and hardening of the arteries.
  42. The acid in your stomach is strong enough to dissolve razorblades.
  43. The aorta, which is largest artery located in the body, is about the diameter of a garden hose.
  44. Most tropical marine fish could survive in a tank of human blood.
  45. Smell and taste are both intimately related. More than 90 per cent of a meal's flavor - apart from the four basic tastes of sweet, sour, bitter and salty - is actually fragrance, which rises up from food during chewing and is forced across the olfactory epithelium through the nasopharynx at the back of the throat. There is a medical condition called Anosmia, where the sufferers have no sense of smell at all. They can still sense sweet, sour, bitter and salty tastes; but flavor, which is virtually all smell, is totally gone
  46. It is impossible to sneeze with your eyes open.
  47. It is impossible to lick your elbow.
  48. In ancient Egypt, doctors used jolts from the electric catfish to reduce the pain of arthritis.
  49. Humans have 46 chromosomes, peas have 14 and crayfish have 200.
  50. About 32 million bacteria call every inch of your skin home.
  51. There are approximately 9,000 taste buds on the tongue.
  52. The human brain is 2% of the body's weight but uses 20% of its energy.
  53. Sneezes can travel up to 100mph.
  54. If saliva cannot dissolve something, you cannot taste it. In order for foods, or anything else, to have a taste, chemicals from the substance must be dissolved by saliva. If you don’t believe it, try drying off your tongue before tasting something.
  55. Nerve cells can travel as fast as 120 metres per second.Nerve impulses for muscle position travel at a speed of up to 390 feet per second.
  56. Approximately 75% of human waste is made of water.
  57. Western adults, on average, consume 10 liters of alcohol a year.
  58. Earwax production is necessary for good ear health. While many people find earwax to be disgusting, it’s actually a very important part of your ear’s defense system. It protects the delicate inner ear from bacteria, fungus, dirt and even insects. It also cleans and lubricates the ear canal.
  59. On average 1,668 gallons of water are used by each person in the United States daily.
  60. Over fifty billion aspirin tablets are taken worldwide each year.
  61. A study indicates that smokers are likely to die on average six and a half years earlier than non-smokers.
  62. During your lifetime, you will produce enough saliva to fill two swimming pools.
  63. The purpose of tonsils is to destroy foreign substances that are swallowed or breathed in.
  64. Over 900 million people speak Mandarin Chinese, making it the most spoken first language on Earth. By contrast, English is spoken by over 400 million people as a first language; but has a further 1.1 billion who speak it as a second language i.e. 1.5 billion speakers in total, or approximately a quarter of all the people on Earth speak at least some English.
  65. 1 out of every 4 kids in the USA is overweight.
  66. Humans blink over 10,000,000 times a year.
  67. Each person sheds 40lbs of skin in his or her lifetime.
  68. The brain itself cannot feel pain. While the brain might be the pain center when you cut your finger or burn yourself, the brain itself does not have pain receptors and cannot feel pain.
  69. Every day the human stomach produces about 2 liters of hydrochloric acid.
  70. The surface area of a human lung is equal to a tennis court. In order to more efficiently oxygenate the blood, the lungs are filled with thousands of branching bronchi and tiny, grape-like alveoli.
  71. Manic depression affects 1.2 percent of Americans aged 18 or older annually, or 2.2 million individuals. Approximately equal numbers of men and women suffer from the condition.
  72. Your body has enough iron in it to make a nail 3 inches long. Anyone who has ever tasted blood knows that it has a slightly metallic taste. This is due to the high levels of iron in the blood.
  73. Babies are born without kneecaps. A child's kneecaps do not appear until he or she is 2 years old.
  74. From all the oxygen that a human breathes, twenty percent goes to the brain.
  75. If all the molecules of DNA in a single human cell were laid out end to end, they would stretch 2 metres. This DNA is packed into a nucleus 10 millionths of a metre across.
  76. On average women say 7,000 words per day. Men manage just over 2000.
  77. People have the tendency to chew the food on the side that they most often use their hand.
  78. Every second, Americans collectively eat one hundred pounds of chocolate.
  79. Obsessive nose picking is referred to as rhinotillexomania.
  80. Over 90% of diseases are caused or complicated by stress. That high stress job you have could be doing more than just wearing you down each day. It could also be increasing your chances of having a variety of serious medical conditions like depression, high blood pressure and heart disease.
  81. It typically takes twelve years and close to billion dollars to develop a new medicine.
  82. A little under one quarter of the people in the world are vegetarians.
  83. The ashes of a cremated person average about 9 pounds.
  84. By walking an extra 20 minutes every day, an average person will burn off seven pounds of body fat in a year.
  85. Scientists say the higher your I.Q. the more you dream. While this may be true, don’t take it as a sign you’re mentally lacking if you can’t recall your dreams. Most of us don’t remember many of our dreams and the average length of most dreams is only 2-3 seconds–barely long enough to register.
  86. The act of stretching and yawning is referred to as pandiculation.
  87. The most common blood type in the world is Type O.
  88. More germs are transferred shaking hands than kissing.
  89. There are more than 640 muscles in the human body.
  90. The feet have approximately 250,000 sweat glands.
  91. People that smoke have 10 times as many wrinkles as a person that does not smoke.
  92. The average human brain consumes just 12 Watts of power - about one-tenth of what it takes to burn an ordinary light bulb.
  93. Every three days a human stomach gets a new lining.
  94. It is not possible to tickle yourself. Even the most ticklish among us do not have the ability to tickle ourselves. The reason behind this is that your brain predicts the tickle from information it already has, like how your fingers are moving. Because it knows and can feel where the tickle is coming from, your brain doesn’t respond in the same way as it would if someone else was doing the tickling.
  95. Research has indicated that approximately eleven minutes are cut off the life of an average male smoker from each cigarette smoked.
  96. Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil.
  97. One out of 20 people have an extra rib.
  98. Humans, on average bite at 170lbs. of force. Many Eskimos have, (or used to have, when they mainly ate tough whale meat), twice the biting strength than that of an average person. However, an american man once bit a force of 975 lbs
  99. At just 12 weeks the human fetus can scowl and squint.At 23 weeks the human fetus experiences REM sleep. By 24 weeks the human fetus can suck its thumb so hard that blisters are raised.
  100. There are more microbial cells in your body than cells that have your own DNA.
  101. Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin. The blood in these capillaries is normally highly oxygenated and therefore quite red.
  102. The Sound Pressure Levels typical of commonly encountered noise sources in decibels, with the threshold of hearing being zero. Rustle of leaves - 10; Soft whisper - 30; Mosquito buzzing - 40; Average townhouse - 50; Ordinary conversation - 60; Busy street - 70; Power mower - 100; Threshold of pain - 120; Loud Rock Concert - 130; Jet engine at 30m - 150; Rocket engine at 30m - 180.
  103. An average adult produces about half a litre of flatulent gas per day, resulting in an average of about fourteen occurrences of flatulence a day.
  104. Epilepsy can start at any age and can result from inheriting a mutant gene.
  105. Brain damage can occur if a fever goes above 107.6 degrees farenheit.
  106. The brain is much more active at night than during the day.
  107. Nerve impulses to and from the brain travel as fast as 170 miles per hour.
  108. 88% of all humans are right handed.
  109. Every day, the average person swallows about a quart of mucus.
  110. The indentation in the middle of the area between the nose and the upper lip has a name. It is called the philtrum. Scientists have yet to figure out what purpose this indentation serves, though the ancient Greeks thought it to be one of the most erogenous places on the body.
  111. The average person is able to detect and distinguish between about 10,000 different smells, using approximately 400 receptors.
  112. A fetus that is four months old, will become startled and turn away if a light is flashed on the mother's stomach.
  113. Bile produced by the liver is responsible for making your feces a brownish, green colour.
  114. The brain reaches its maximum weight near age 20 and slowly loses about 10 percent of its weight over a lifetime.
  115. The small intestine in the human body is about 2 inches around, and 22 feet long.
  116. A healthy person has 6,000 million, million, million hemoglobin molecules.
  117. In 1997, 1.5 million Americans were current cocaine users.
  118. The average person falls asleep in about 12 to 14 minutes.
  119. If the human genome were a book. It would contain one billion words (or as long as 800 bibles); and if you were to read it out loud at the rate of one word per second for eight hours a day, it would take a century.
  120. Some people drink the urine of pregnant women to build up their immune system.
  121. To lose one pound of fat, a person has to burn approximately 3,500 calories.
  122. The human retina is made up of about 120 million rod cells.
  123. The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Or any other encyclopedia for that matter. Scientists have yet to settle on a definitive amount, but the storage capacity of the brain in electronic terms is thought to be between 3 or even 1,000 terabytes. The National Archives of Britain, containing over 900 years of history, only takes up 70 terabytes, making your brain’s memory power pretty darn impressive.
  124. A human heart beats 100,000 times a day. Every heartbeat pumps 1/15th of a pint of blood.
  125. Ninety percent of the population has an innie belly button.
  126. The human heart creates enough pressure when it pumps out to the body to squirt blood 30 feet
  127. The average person accidentally eats 430 bugs each year of their life.
  128. Close to fifty percent of the bacteria in the mouth lives on the surface of our tongue.
  129. On average, a person has two million sweat glands.
  130. In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces
  131. If more than 23 people gather in a room there is a better than 1 in 2 chance that at least two of them will share the same birthday.
  132. Hair and fingernails are made from the same substance, keratin.
  133. During your lifetime, you'll eat about 60,000 pounds of food, that's the weight of about 6 elephants.
  134. The kidneys filter over 400 gallons of blood each day.
  135. There are five million scent receptors located in a human beings nose.
  136. Your body is creating and killing 15 million red blood cells per second.
  137. About one in every 2000 people automatically sees colors when hearing words, letters or numbers The vast majority (roughly 90 per cent) are female.
  138. Eating chocolate three times a month helps people live longer as opposed to people who overeat chocolate or do not eat chocolate at all.
  139. The reason why tattoos do not vanish even though we shed our skin is because the dye is injected deeper into the dermis part of the skin.
  140. A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
  141. Of the roughly 6500 languages now spoken, up to half are already endangered or on the brink of extinction. Linguists estimate that a language dies somewhere in the world every two weeks

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