Human Body Facts! Well, you are at the right place to learn some of the most incredible facts about the human body.
Needless to say, the human body is the most advanced technology that you can find today.
Forget about replicating it, we are far from completely understanding how it works! From whatever we have learned since the dawn of human kind, let us take a look at 195 incredible human body facts.
And, we promise to make this list longer over the course of next few days. But for now, 195 facts it is!
General Human Body Facts: 1-5
1. Our hair comprises of a protein called keratin which grows from an opening on the scalp which is called follicle.
2. The color of the hair is determined by pigment called melanin. Melanin is produced in hair’s shaft beneath the skin.
3. Hair is extremely fragile or so we think? A single strand of hair can support around 100 grams of weight and our total hair you ask? It can support 12 tons of weight!
4. Of all the hair on our body, the fastest growing hair is the beard. If a person doesn’t trim, it can grow as long as 30 feet in his lifetime which will be longer than a killer whale.
5. Nose hair can grow nearly 6 feet in one’s lifetime.
General Human Body Facts: 6-10
6. An average human has around 100,000 to 150,000 hair follicles. Redheads have the least hair density (90,000 hair follicles).
7. Blondes have more hair in general with around 110,000 hairs and black hair beauties fall in between with 140,000 hairs.
8. Straight hair people have round hair follicles and curly hairs have oval hair follicles.
9. Average hair fall is around 60 to 100 hair per day.
10. A strand of hair grows 12 to 15 centimeters in one year, 1 to 1.5 centimeters a month and 0.3 to 0.5 millimeters a day.
General Human Body Facts: 11-15
11. Men’s hair is double the diameter of women’s hair. It is because men’s hair is coarser than women’s hair.
12. If we sit on to measure the number of hairs per square inch, then humans and chimpanzees have the same amount of hair!
13. If you can just ignore the fact that human hair is inflammable, our hair is otherwise nearly indestructible. Its natural decay is extremely slow and cold, climate, water etc., can’t really destroy hair.
14. Adding to this, it is pretty resistant to many of the acids and chemicals.
15. You need to lose 50% if your hair for others to realize that you are losing hair!
General Human Body Facts: 16-20
16. We generally believe that waxing or shaving makes our hair grow thicker and coarser but there is no scientific evidence to prove this.
17. Maximum length a hair strand can achieve is 70 to 90 centimeters and lifespan of a hair strand is around 3 to 7 years.
18. If we measure the length of eyelashes that we lose in our lifetime, it would be 30 meters. That’s quite a lot.
19. Did you know that healthy human hair produces sound?
20. The fastest growing tissue present on our body is the hair. Next comes the bone marrow.
General Human Body Facts: 21-25
21. Contrary to our belief, frequent washing of hair doesn’t damage it.
22. 35 millimeters of hair fiber is produced on our scalp on an average each day.
23. 80% of our brain is water.
24. We may take it for granted but a neglected child’s brain is smaller than that of a healthy child.
25. The weight of the brain of an average male adult is 1375 grams. The average weight of female brain is slightly less and stands at 1275 grams.
General Human Body Facts: 26-30
27. Amphetamines release the same neurotransmitters and hormones which are released by brain when in love. They cause intense feelings of excitement, loss of sleep and appetite, and increased heart rate.
28. Our nervous system conducts messages to our brain at a speed of 180 miles an hour.
29. Did you know that left part of our brain controls the right part of our body and vice versa?
30. Our brain’s average length is 167 millimeters, width is 140 millimeters, and it has an average height of 93 millimeters.
General Human Body Facts: 31-35
31. Neurons keep on growing till we die.
32. It is assumed that there are around 1, 000,000,000,000,000 connections in our brain.
33. Different types of neurons have different speeds of conducting the messages or nerve impulses.
34. In a person’s lifetime, brain can store around 1 quadrillion bits of information in long-term memory.
35. Weight of cerebellum (a part of our brain) is around 150 grams.
General Human Body Facts: 36-40
36. Though brain’s weight is pretty less, its surface area is more and stands at 25,000 square centimeters.
37. One of the natural ways to improve our memory and concentration is cold weather. Isn’t that weird?
38. When a person touches you, your nerves send the message to your brain at 124 miles per hour.
39. If you just spread your brain (at least imagine), it will be of the size of a pillow.
40. Human brain is loaded with cells. It has around 100 billion nerve cells and more than 50 billion other cells.
General Human Body Facts: 41-45
41. If we compare our brain to a computer, our brain will win as the most powerful computer in the world with 3000 GHz processing speed.
42. Human brain is pure fat and is soft as butter.
43. A human brain can create as many ideas as there are atoms in our universe.
44. Our brain loses one gram a year as we age.
45. Our brain continues to send messages for around 37 hours after death.
General Human Body Facts: 46-50
46. Did you know that our brain itself can’t feel any pain and it is more active at night than at day?
47. A 10-watt light bulb and our brain consumes the same amount of power.
48. For listening, men listen from the left side of the brain whereas women use both the sides of the brain.
49. Human brain has the capacity to hold 5 times more information that the Encyclopedia Britannica.
50. Our brain consists of 60% white matter and 40% grey matter.
General Human Body Facts: 51-55
51. Brain can read more than 1,000 words per minute.
52. Blind people can understand spoken words faster than people with eyesight.
53. We blink for 0.3 seconds and we blink around 25 times a minute.
54. 3.5% of our eyeballs are made up of salt.
55. Human lens is made up of 65% water and 3% protein.
General Human Body Facts: 56-60
56. It is iris which determines the color of your eye.
57. Fastest reacting muscles or our body are present in our eyes. They can contract in 1/100th of a second.
58. Blue-eyed people have higher alcohol tolerance.
59. Our eyes don’t grow at all.
60. Our eyes can distinguish nearly 10 million color surfaces and can process more information than largest telescope of the world.
General Human Body Facts: 61-65
61. While most of the people have three types of color receptors some of the women have 4 or 5 types and they can see many different colors that we can’t understand.
62. Men are good at reading smaller print than women and women have better hearing abilities.
63. It is considered that the main function of eyebrows is to keep sweat away from our eyes.
64. Our eyesight is sharper in the middle of the day.
65. If we count the number of blinks in a person’s lifetime and calculate, we spend 1.2 years in our lifetime just blinking.
General Human Body Facts: 66-70
66. More than 200 muscles work to blink one eye.
67. If our eye was a camera, it would have nearly 576 megapixels.
68. 90% of the information that we perceive from our surroundings is through visual or from our eyesight.
69. Our eyes can process around 36,000 bits of information every hour.
70. The images that fall on retina are upside down. It is our brain which corrects it for us.
General Human Body Facts: 71-75
71. 1/3rd population of humans have 20/20 vision.
72. An eyeball weighs around 28 grams and is around 24.5 millimeters long.
73. We can see UV light but our lens filters out the UV light.
74. Women blink twice as much as men do.
75. We are the only species to produce tears for emotional reasons (but we seriously doubt this!).
General Human Body Facts: 76-80
76. Human eyes have 110 to 130 million receptors to perceive light.
77. We have two types of receptors – rods and cones. Rods help us in understanding the shape of images, help in low lit areas. Cones responds to the colors and help us in brightly lit areas.
78. Your eyeballs never grow. You have the same size eyeballs from birth to death.
79. After having sumptuous meal, our hearing power decreases slightly.
80. Any sound higher than 130 decibels will cause pain to our ears.
General Human Body Facts: 81-85
81. Your ears tend to create more earwax when you are scared than when you are relaxed.
82. Ears will continue growing your entire lifetime.
83. Adults ears are not as sensitive as children’s ears.
84. Earwax is made up of oil and sweat.
85. Stapes (one of the three bones of the ears) is the smallest bone in our body.
General Human Body Facts: 86-90
86. The circumference of inner ear is similar to the circumference of a pencil eraser.
87. Production of earwax is actually necessary for having good ear health.
88. More than 7 pounds of pressure will rip your ears apart.
89. Ears are the main organs for equilibrium and balance in our body.
90. Hair cells of ears translate the sound waves to electricity so that they can be sent to the brain.
General Human Body Facts: 91-95
91. We can hear sound in the range of 20 Hz to 20,000 Hz.
92. Each human ear has around 24,000 fibers in it.
93. Your ears work 24/7. Your brain ignores the sounds when you are sleeping.
94. Nose is our body’s air-conditioner. It not only filters impurities, but also warms cold air and cools warm air.
95. Nose has the ability to recognize a trillion different scents.
General Human Body Facts: 96-100
96. Humans breathe around 13 pints of air each minute.
97. Like fingerprints, each human has a unique smell (twins have the same smell).
98. Brain interprets the signals from both nose and tongue and therefore if our sense of smell is damaged then our sense of taste also gets affected.
99. We can identify a chemical smell of a particular object in one part per trillion of air.
100. However, our nose’s smelling capacity is just 1/20th of the nose of a dog.
General Human Body Facts: 101-105
101. Women have better sense of smell than men. You can’t smell while sleeping.
102. Children have better sense of smell than adults.
103. Your nose won’t stop growing till you die.
104. This might irk you but Romans used to clean their teeth with urine and thought that it would whiten the teeth.
105. Our teeth start growing 6 months after we are born.
General Human Body Facts: 106-110
106. Brushing teeth regularly has shown to prevent diseases of heart!
107. The only body part which cannot repair and heal by itself is the tooth.
108. Enamel, the covering of our teeth, is the hardest substance of our body.
109. Plaque starts forming 6 hours after we brush our teeth.
110. Bones are composed of 31% water.
General Human Body Facts: 111-115
111. If you measure pound by pound, bones are 4 times stronger than concrete.
112. Diaphragm controls our breathing process.
113. 14% of our body weight is the weight of our bones, and 40% of total body weight is constituted by the weight of our muscles.
114. There are 300 bones in humans at birth. These bones fuse and we eventually end up having 206 bones as an adult.
115. There are around 29 bones in our skull.
General Human Body Facts: 116-120
116. Jawbone is the hardest bone in our body.
117. Our skeleton renews itself once every 3 months.
118. Our bone is 50 times lighter than steel but it is as hard as steel.
119. Our fingers bend and stretch for over 25 million times in our lifetime.
120. 72 muscles interact to produce our speech.
General Human Body Facts: 121-125
121. No other animal has as many facial muscles as humans. There are 22 muscles on each side of our face.
122. 43 muscles work to make a frown and 17 muscles contract to smile.
123. Muscles are three times more efficient in burning calories than fat.
124. One in 20 people have an extra rib and mostly people with an extra rib turn out to be men.
125. Muscles work in pairs.
General Human Body Facts: 126-130
126. 1/4th of total bones in our body are present in our feet.
127. Femur or thigh bone is the longest bone in our body.
128. Heart muscles or cardiac muscles work till you die.
129. There are around 230 movable and semi-movable joints.
130. Caterpillar has more muscles than humans.
General Human Body Facts: 131-135
131. Hyoid bone is the only bone which is not attached to any other bone.
132. Sartorius or tailor’s muscle, present in the hip region, is the longest muscle in our body.
133. Shoulder blade is not attached to a single bone but it is attached to the body via 15 muscles.
134. The sound that we hear when we crack our knuckles is actually the sound of bubbles of nitrogen gas bursting.
135. Masseters (present on either side of our mouth) and tongue are the strongest muscles of our body.
General Human Body Facts: 136-140
136. Our ribs move 5 million times each year!
137. 200 muscles are put to work to take one step.
138. Gluteus maximus or the butt is the biggest muscle in our body.
139. Stapedius (present in middle ear) is the smallest muscle in our body and is 1/5th of an inch.
140. Stomach produces a new stomach lining every three days to prevent digesting itself.
General Human Body Facts: 141-145
141. One in 10,000 people have organs in mirrored or reverse position from their normal positions.
142. Both the lungs have around 500 million alveoli.
143. Our liver has 100,000 clusters called lobules.
144. Liver performs more than 500 functions.
145. Liver is the largest and heaviest internal organ of our body.
General Human Body Facts: 146-150
146. When we blush, our stomach lining also reddens.
147. Each kidney has around 1 to 3 million nephrons.
148. Liver can regenerate itself completely even if 2/3rd of it is removed.
149. Surface area of human lungs is equal to that of a tennis court.
150. Your left lung is 10% smaller than right lung and right kidney is smaller and lower than the left kidney.
General Human Body Facts: 151-155
151. One square inch of our skin has near about 1300 nerve cells.
152. Skin is the largest organ of our body. Liver is the largest internal organ of our body.
153. Our skin has 45 miles of nerves.
154. In our lifetime, we shed nearly 40 pounds of skin!
155. Our skin sheds and grows back in 27 days.
General Human Body Facts: 156-160
156. The dust that you have seen under your bed is mostly your dead skin.
157. There are more than 32 million bacteria on each inch of our skin.
158. The thickness of our skin varies from 0.5 to 6 millimeters depending on the area of our body.
159. Weight of our skin can range from 8 to 10 pounds.
160. Color of our skin is dependent on a pigment called melanin.
General Human Body Facts: 161-165
161. There are around 625 sweat glands present on a square inch of our skin.
162. Certain people may be obsessed with white skin color. But the ones with white skin tone are more prone to wrinkles than the ones with dark skin tone.
163. 30,000 to 40,000 skin cells die every minute.
164. Did you know that our skin can grow artificially?
165. Acid of our stomach, if it comes into contact with our skin, it will burn the skin with ease.
General Human Body Facts: 166-170
166. Our mouth produces a liter of saliva every day.
167. Sometimes your brain is more active when you are sleeping than when you are awake.
168. If the blood vessels are laid end to end (measure up to 100,000 kilometers), the blood vessels can easily circle equator four times.
169. The word muscle comes from Latin word meaning little mouse. Ancient Romans thought that flexed bicep muscles resembled little mice.
170. Our bodies are bio-luminescent but the light that emanates from our body is so weak that we can’t see.
General Human Body Facts: 171-175
171. Our belly button has an average of 67 species of bacteria on an average.
172. Almost 4 kg of skin cells are lost every year.
173. Babies don’t have the ability to shed tears till they attain 1-month age.
174. In our lifetime, our heart beats for more than 3 billion times.
175. Our teeth are as strong as teeth of shark.
General Human Body Facts: 176-180
176. We are the only known species to blush.
177. Our blood constitutes about 8% of our body weight.
178. Cornea is the only part which doesn’t have any blood supply.
179. An infant can swallow and breathe at the same time. They have this ability for up to 7 months.
General Human Body Facts: 181-185
181. It has enough water to fill 50-liter barrel, enough carbon to produce 900 pencils, enough fat to produce 7 bars of soap.
183. By the time you will complete reading this sentence, 50,000 cells died and were replaced by new ones.
184. Human embryo gets fingerprints when it is 12 weeks old.
185. Men’s hearts beat slower than women.
General Human Body Facts: 186-190
186. Left-handed people live 9 years less than their right-handed counterparts.
187. Our respiration is 1/3rd times higher in spring than autumn.
188. Charles Osborne hiccuped for 68 years.
189. 2/3rd people tilt their heads to their right while kissing.
190. An average person loses around 80% of his energy through his head.
General Human Body Facts: 191-195
191. When there is water loss of 1% of our body weight, we feel thirsty. If the percentage increases to 5%, we may experience fainting.
192. Water loss of more than 10% of our body weight, we will die of dehydration. So, drink water!
193. There are more than 700 enzymes active in our body.
194. Humans are the only species to have the ability to sleep on their backs.
195. Did you know ingrown toenails are passed from generation to generation?