50 Interesting Facts about Human Body and Our Health

The human body is a fantastic machine. Its harmonic functioning is surprising even for scholars in the field, and we can hardly exhaust half of its knowledge. It is made up of countless cells, which form tissues, organs, and systems; a complex and perfect machine with all its parts running in sync. But it brings with it a series of interesting facts that will have amazed.

Some of these interesting facts that will leave you surprised include:

  1. The skin is the largest organ in the human body; it corresponds to 16% of body weight.
  2. The right kidney is always slightly below the left kidney and they have different heights. 
  3. Together, two human kidneys hold up to 2 liters of urine per day.
  4. The bones begin to form from the second month of pregnancy. 
  5. An adult skeleton has an average of 213 bones.
  6. The only bacteria capable of supporting the acidic environment of the stomach are helicobacter pylori, known as H. pylori, which cause ulcers and stomach cancer.
  7. We managed to “digest” the gum, so it can be swallow. 
  8. The human digestive system absorbs sugar and other compounds, but the latex, which is the basis of the sweet, will be eliminated by the intestine along with other products not used by your body.
  9. The arteries, veins, and capillaries in the human body, if added and stretched, measure about 100 thousand kilometers. With such longitude, they could make 2.5 turns on earth.
  10. The spinal discs work like the shock absorbers of a car. So they allow us to run, jump, turn the head and torso.
  11. On average, the human heart beats 60 to 100 times for minutes at rest and sleeping 30 to 40 times.
  12. The human heart beats about 100,000 times a day, and about 35 million times a year.
  13. An average human being blinks 15 – 20 times per minute, that is, up to 1200 per hour and up to 28,800 a day.
  14. The eyelashes have the function of preventing all kinds of dirt and strong light in the eyes and the eyebrows hold the sweat that runs down the forehead.
  15. The sneeze reaches an incredible 150 kilometers per hour, spreading about 40,000 infectious droplets, and we automatically close our eyes to protect the tear ducts and blood vessels.
  16. Human intestines produce gases and 99% of them are odorless, while the 1% that is fetid occurs due to the sulfur in the mixture that can worsen with the consumption of onions, eggs, and beans.
  17. The empty stomach is 50 milliliters in volume and can hold up to 4 liters of food. In this way, it can increase up to 80 times its size when empty.
  18. Human blinks lubricate the eyes and last only tenths of a second, but it depends on the person’s mood and health.
  19. A study by the University of California found that men have a nose that aids navigation, being programmed to turn odors into spatial information.
  20. For every liter of sweat that evaporates in an exercise, for example, we lose 580 kilocalories of the body.
  21. The appendix is an organ that was part of the digestive system that today presents important antibodies for the human body, the known good germs.
  22. The laughter stimulates the production of endorphins, serotonin, and adrenaline, and dopamine, which decrease pain, blood pressure, improve memory, reduces stress hormones, and prevent wrinkles.
  23. The brain has 86 billion neurons and is very similar to the inside of a nut. Also, if its billions of cells were measured, we would have an area of ​​more than 1 square meter.
  24. In a normal adult, there are about 150,000 hair follicles and they grow an average of 1 cm per month. They are further classified into 4 basic colors and 11 types.
  25. On average, a person at rest takes about 16 breaths per minute, 960 breaths an hour, 23,040 per day, and a whopping 8,409,600 a year.
  26. According to the intensity of the urge to urinate, we can know how much urine we have in the bladder; if it is light and you can take it, you have an average of 250 milliliters, but if you are already desperate to use the restroom you have an average of 800 milliliters.
  27. Each human fingerprint is unique, and every human being also has a unique pattern in the iris (the colored part of the eye). 
  28. On a rare condition, some persons are without a fingerprint, which is known as adermatoglyphia.
  29. The brain has an amount of energy that can light a lamp. It has an average of 60% fat, which is 2% of its total weight.
  30. When eating, the taste is helped by smell when it comes to tasting the food, so it is not so tasty when we have a cold, for example.
  31. The heart, on average, is the size of its owner’s closed hand; if you close your hands you will see the approximate size of your heart.
  32. The largest bone in the human body is the thigh femur and it supports no less than 30 times a person’s weight.
  33. How surprising it is to know that 1/4 of the bones of the human body are in the feet and they have different sizes. 
  34. The thumb is a finger on the side opposite to the others and makes the caliper, so we can rotate it at an angle of up to 90º and the other fingers can only rotate at an angle of 45º. 
  35. The headache and other symptoms of the hangover happen because of dehydration caused by alcohol ingested in excess.
  36. A human DNA molecule is about 2 meters long encapsulated in a cell nucleus of 6 µm, it is as if we accommodated 40 kilometers in an ordinary tennis ball.
  37. After 72 hours after the death of a person, the enzymes that help digest food initiate the “digestion” of the body itself.
  38. The exercise increases the immunity of the human body, especially in the elderly where, over the years, it starts to become impaired.
  39. The tongue is the strongest and most flexible muscle present in the human body, and an average person has about 10,000 taste buds.
  40. The human body contains about 65% water, the same percentage of water present in the body of mice. We can survive just over 30 days without solid food, but only two or three days without water.
  41. Human lungs are about 83% water, the skin contains 64% water, while muscles and kidneys are 79%. Even the bone contains 31% water.
  42. The jaw is a movable bone and is the largest and strongest bone on the face.
  43. No human can commit suicide by holding breath.
  44. A person can die from lack of sleep sooner than from hunger, which usually takes two to three weeks.
  45. Women have a better sense of smell than men.
  46. The human skeleton renews every 10 years.
  47. The smarter a person is, the more dreams he will have while sleeping.
  48. In half an hour, the human body can produce enough heat to boil a gallon of water.
  49. An average adult human is made up of approximately 7 octillion atoms.
  50. 17 muscles are required to smile and 43 to frown.


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