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Interesting Facts About The Human Body

Written by Dr. Pallavi Chaudhari | Updated on: January 04, 2021


Interesting Facts About The Human Body

The Human Body is genuinely the most complex and fascinating living creation on the earth. If you are also among those people who are very much curious about knowing this incredible living form, then indeed, you are reading the right article. This article covers most of the fantastic, funny, and interesting facts about the human body including Brain, Skull, Eyes, Ears, Nose, Lips, Tongue, Teeth, Hair, Heart, Hands, Fingers, Feet, and Legs.

This article will provide insights into the following topics:

  • Amazing and Fascinating Body Facts
  • Facts related to the Brain and Skull
  • Facts about eyes, ears and nose
  • Facts about lips, tongue and teeth
  • Facts about hair and heart
  • Facts about hands and fingers
  • Facts about feet and legs

1) Amazing Facts About Brain and Skull

Interesting facts about human brain and skull

  • The average person has approximately 70,000 thoughts per day.
  • The human brain's memory is equivalent to that of more than four terabytes on a hard drive.
  • Usually, people forget 90% of their dreams.
  • The human brain weighs about 3 pounds.
  • The mind is capable of surviving for 5-6 minutes only in a lack of oxygen.
  • Your brain typically stops growing at the age of 18.
  • While awake, our brain generates enough energy to power a light bulb.
  • A living brain is so soft that you can cut it using a butter knife.
  • Dreaming requires more brain activity as compared to those we do while we are awake.

2) Interesting Facts About Your Eyes

Interesting facts about human eyes

  • Our eyes can focus on approximately 50 different objects every second.
  • You cannot sneeze with your eyes open.
  • Your eyes can distinguish nearly 10 million different colors.
  • You blink almost 12 times in a minute.
  • You know the world's most common eye color is brown.
  • At birth, all the babies are color blind.
  • Newborn babies cry, but they do not produce tears.
  • As we grow old, we make fewer tears.
  • Nearly 80% of our memories are determined by what we have seen.
  • A shark's cornea is similar to a human's cornea and is used in eye surgeries.
  • Smoking leads to a reduction in your night vision.
  • The human eye can see only three colors: red, blue, and green.
  • Blind people can see dreams as long as they weren't blind since birth.

3) Fascinating Facts About Human Ears

Interesting facts about human ears

  • Your ears never stop hearing, even when we are asleep. It's just that our brain overlooks the incoming sounds.
  • You do not have to clear earwax unless there is some abnormal condition. When needed, our ears push them out by themselves.
  • The sense of hearing depends on tiny hairs inside our ear, so we lose hearing if we lose these hairs.
  • One of the critical causes of hearing loss is loud sounds, i.e., 85 decibels or higher.
  • Studies have shown that we can hear the music better on our left side.
  • Hearing problems caused by exposure to noise can be prevented with diet: Omega 3 fatty acids, antioxidants, and green leafy vegetables.
  • Your outer ear keeps growing throughout your lifetime.
  • Ears not only help you in hearing but also helps in balancing.
  • Your ears also affect taste sensation.
  • Sitting close to loudspeakers can damage your hearing in just 7.5 minutes.
  • Most people enduring hearing loss are under the age of 65 years.
  • We get strange feelings like ear pain, discomfort, and even go slightly deaf when we go up at high altitude.

4) Interesting Facts About Your Nose:

Interesting facts about human nose

  • There are 14 types of nose shapes.
  • Comparatively, the nose of males is larger than those of females.
  • There are 12 million olfactory (smell) receptor cells in the human nose.
  • In women, the nose grows till the age of 15 to 17 years, and for men, it grows till 17 to 19 years.
  • Your nose droops, i.e., grow downwards because of gravitational pull.
  • When you get sick, your nose becomes runny. It's because it produces more mucus in an attempt to kill invading microorganisms.
  • The human nose is capable of detecting around 10,000+ scents.
  • The smell sense is more potent in women than in men.
  • The female nose becomes more sensitive during pregnancy.
  • Human babies can identify their mother by the scent of them.
  • Parkinson's disease, Alzheimer's disease, diabetes, and zinc deficiency can lead to loss of smelling sense.
  • Humans start losing their smelling ability by the age of 65.
  • You don't smell with the nose; your brain does the job.
  • Nasal cilia (hair-like structures) can move up to 20 hours after the death. According to researchers, this can tell us about the time of death.
  • According to the studies, 45% of men and 25% of women have a regular snoring habit.
  • You cannot sneeze while asleep because the nerves that trigger sneezing are also sleeping.
  • A single sneeze produces approximately 40,000 droplets, which travel up to 20 miles/hr.

5) Interesting Facts About Human Lips, Teeth, and Tongue.

Interesting facts about human lips

  • Our lips never sweat and are pimple-free. It's because lips do not have sweat glands.
  • Lips are incredibly susceptible to sun damage and are often the typical spot for skin cancer; hence they need sunscreen.
  • As we age, our lips get thinner. It's because aging causes decreased production of collagen that gives our lips their shape and fullness.
  • Our lips are the perfect communicator; they are best at expressing emotions.
  • The red color of our lips is due to the underlying blood vessels and capillaries.
  • Just like our fingerprints, lips marks are also unique for every individual.
  • Chances of mouth cancer are more in men than women.
  • Whistling happens by the movement of "orbicularis oris" muscle.
  • Women who have big lips have more chances of attracting the opposite sex.
  • The dip between your upper lip and the lower border of the nose is called Philtrum.

Amazing Facts About Teeth

Interesting facts about human teeth

  • The enamel part of the teeth is the hardest substance of the human body.
  • You miss 40% cleaning of your tooth surfaces if you do not floss.
  • Right-handed people tend to chew from the right side and vice versa.
  • More people prefer blue toothbrushes over red.
  • According to studies, a woman smiles 62 times a day while a man smiles about eight times a day.
  • Adults laugh around 15 times a day, while kids around 400 times a day.
  • The recommended brushing time is 2-3 minutes, but the average person brushes for only 45 to 70 seconds a day.
  • Your teeth are uniquely yours. Even identical twins don't have similar teeth.
  • Dentin continuous to grow throughout life, while enamel is static.
  • Your body produces about 10,000 gallons of saliva over a lifetime.
  • The tooth is the only part of the body that cannot heal by itself.
  • You can only see 1/3 of your teeth, 2/3 of it is hidden beneath gums.
  • The human oral cavity contains more bacteria than there are people on earth.
  • Flossing can increase life expectancy for up to 6 years because it reduces the risk of heart attack and infectious diseases.
  • It's essential to keep your toothbrush dry because bacteria grow faster in a wet and humid environment.
  • 60% of adults are attracted to someone by their smile.
  • On average, people spend 38 days in his /her lifetime brushing.
  • Teeth start forming even before your birth.
  • We are born with 20 baby teeth just below the gumline, waiting to erupt.
  • The first tooth emerges between 6- 12 months.
  • Humans have a biting force up to 200lbs.
  • A very long time ago, twigs were used to clean and floss our teeth.

Amazing Facts About the Tongue

Interesting facts about human tongue

  • The average human tongue is about 3-3.3 inches long. An adult man's tongue length is 3.3 inches while a women's tongue length being 3.1 inches.
  • The world's longest tongue title belongs to an American named Nick Stoeberl (3.97 inches).
  • An average adult has 2000- 4000 taste buds in total.
  • You cannot see your taste buds with the naked eye. Those tiny pink and white bumps you see are actually papillae.
  • Besides the tongue, taste buds are present in the back of the throat, on epiglottis, on the nose and sinuses.
  • Your tongue muscles are the only muscles in the body working independently of the skeleton.
  • Taste buds are devised to keep us alive. The back portion of our tongue is sensitive to bitter tastes, so we can spit poisonous or spoiled foods before we swallow them.
  • Our tongue has a high percentage of fat. So if you get fat, your tongue follows.
  • The tongue prints of every individual are unique.
  • Your tongue can help you diagnose specific abnormalities:
    • The bright red tongue is indicative of Folic acid or B12 deficiency, scarlet fever, Kawasaki disease.
    • A black hairy tongue may be due to bacterial overgrowth, diabetic people, or those on antibiotics or chemotherapy.
  • There is a myth that different areas of the tongue are sensitive to varying tastes like sour, sweet, bitter, salty.
  • The ability to curl your tongue is both genetic and environmental.
  • An oversized tongue is indicative of a sleep apnoea disorder.
  • It's hard to taste foods without the saliva.
  • Children sense flavors more intensely as compared to adults.
  • Loud noises decrease your sense of saltiness and sweetness.
  • In Tibet, sticking out your tongue at someone is considered a sign of greeting.
  • Umami is a new variant of taste discovered by a Japanese scientist, and monosodium glutamate is the chemical responsible for this taste.
  • The tongue is not the strongest muscle of our body; it's a myth.
  • Women have shorter tongues than men.

6) Interesting Facts About Your Hairs

Interesting facts about human hair

  • On average, a person typically has 100,000 to 150,000 strands of hair.
  • You shed around 50-150 strands of hair/ day.
  • After bone marrow, our hair is the second-fastest-growing tissue in our body.
  • When wet, a healthy strand of your hair can stretch an additional up to 30% of its original length.
  • According to the studies, the lifespan of a single hair is about five years.
  • The most common hair color in the world is black.
  • Hairs can grow anywhere on the body except palms, soles, lips, and mucous membranes.
  • On average, a woman spends 1 hour and 35 minutes to wash, dry, and style her hair per week.
  • Hair contains keratin protein, which is also found on the outer layer of our skin and nails.
  • On average, hairs grow about 0.3-0.5 mm per day, 1.25 cms per month, and 15 cms per year.
  • The cuticle that is the outermost layer of the hair protects the inside layer of the strands.
  • It takes around seven years to grow your hair till waist and three years till your shoulder.
  • During the 2007 Cusco Busan oil split in the san Francisco, hairs were used to absorb oil from the water.
  • Do you know that a single strand of hair is stronger than the copper wire of the equivalent diameter?
  • Hairs are used by forensic experts to check anything in a person's bloodstream: medicine, drugs, vitamins, alcohol, and minerals.
  • Canities is the scientific name of grey hair.
  • By the time we are just five months old in the womb, hair follicles are formed in the body.
  • Hair growth is comparatively faster in warm climates.
  • Each hair strand can hold up to 100 gms weight.
  • Blow dryer changes the shape of the hair by altering their hydrogen bond.
  • The haircut doesn't influence how fast your hairs will grow.
  • The only thing that cannot be identified by hair is someone's gender.
  • It's a myth that your hair continues to grow after death.
  • The part of hair within the scalp is the only one that is not dead.
  • On average, women spend about 2 hrs/ week styling their hair.
  • Women spend about $800/ year on hair products.
  • The longest female hair measured 18 feet and 5.5 inches. It belongs to Xie Jiuping.
  • Your hair can grow back after the chemotherapy procedure.
  • Crash dieting leads to temporary hair loss.
  • Iron deficiency and thyroid imbalance also lead to hair loss.
  • The word "shampoo" originated from the Hindi word "champna," which means "kneading."
  • Due to hormonal imbalance, women lose a lot of hair after giving birth.
  • Malassezia Globosa is the fungus that causes dandruff.
  • The carbon content of dark hair is more than light hair.

7) Interesting Facts About Fingers and Hands

Interesting facts about human hands

  • The human hand comprises 27 bones, 29 joints, and at least 123 ligaments.
  • Humans have opposable thumbs, which means our thumbs and fingers can work together.
  • Tanning does not occur on the palm and underside of your fingers.
  •  On average, the hand of adult women is 6.7 inches, while for men, it is 7.4 inches.
  • Fingers do not have muscles.
  • Generally, men possess longer ring fingers than index fingers.
  • According to the hand surgeons, the index finger is the best to lose because it is least needed. 
  • Your fingernails help you keep a check on your health. 
  • The nail's and those whitish crescent-shaped structures on nails show the quality of the oxygen level of the bloodstream.
  • Our fingers have a large number of receptors; hence they are more sensitive.
  • The vein on our ring finger is Venna Amoris, commonly known as the vein of love, which directly connects with the heart; hence we wear an engagement ring on the left hand's finger.
  • Our nails cease to grow after death.
  • Only 6% male and 9.9% of females are left-handed.
  • Time taken by fingernails to grow from root to tip is up to 6 months.
  • There is a Chinese proverb that says- "Never try to catch two frogs single-handedly."
  • "Baisemain" is an old word for a kiss on the hand.
  • The index finger has got many names- demonstrator, teacher's finger, forefinger, insignitur.
  • Only 1 in 100 people are ambidextrous, able to use both the hands equally.
  • The act of touching increases the release of oxytocin.
  • Holding hands decrease the level of the stress hormone, cortisol.
  • Lui Hua from China has the largest hand in the entire world.
  • Every individual has unique fingerprints.
  • According to a study, males with longer fingers tend to earn more than others.
  • If the hands are kept wet, the skin of your palm will wrinkle.
  • White children are more likely to be born with webbed fingers.
  • Black children are more prone to have been born with extra fingers.

8) Amazing Facts About Heart

Interesting facts about human heart

  • The average heart size is the size of an adult's fist.
  • Your heart beats about 115,000 times a day.
  • The Lub-Dub sound you hear when the heart is beating is due to the opening and closing of heart valves.
  • Your heart pumps about 2000 gallons of blood daily.
  • The human heart's weight is less than 1 pounds, but a man's heart is 2 ounces heavier than the women's heart.
  • The youngest one to undergo heart surgery was only a minute old.
  • Your heart continues to beat even when it's detached from your body.
  • Most of the heart attacks occur on Monday.
  • Christmas is found to be the most common day for heart attacks to happen.
  • A woman's heart beats faster as compared to a man's.
  • A newborn baby has the fastest heartbeats.
  • The symptoms of heart attack vary in men and women.
  • Your heart doesn't stop working when you sneeze.
  • A heart that is broken feels like a heart attack.
  • Regular exercise keeps your heart healthy.
  • According to the research, having a cat around you can reduce the risk of heart attacks by 1/3.
  • Vegetarians are 32% less likely to die from heart disease.
  • Eating dark chocolates helps in reducing the risk of heart diseases.
  • Coffee consumers are at lesser risk of developing heart diseases.
  • Prolonged lack of sleep causes irregular heartbeats known as Premature Ventricular Contractions.
  • Drug use, especially cocaine, affects the heart's activity.
  • Squeezing a tennis ball tightly illustrates how much the heart has to work to pump the blood throughout the body.
  • Your heart can produce enough energy every day to move a truck up to 20 miles.
  • The first-ever pacemakers were plugged into a wall socket.
  • After conception, the heart starts beating around four weeks.

8) Fascinating Facts About Feet and Legs

Interesting facts about human feet

  • Young children usually have flat feet.
  • 75% of people have foot problems.
  • Toenails grow slowly as compared to fingernails.
  • The skin present on the soles of your feet is much thicker than anywhere else in the body.
  • Your foot has more than 250,000 sweat glands.
  • Walking is one of the best exercises for your feet. It helps you burn calories and boosts circulation.
  • When you stand still, you use fewer muscles than walking; hence standing still makes you more tired.
  • A Russian Woman Svetlana Pankratova has the longest legs in the world, measuring 132 cm.
  • Before going to the stage, actors are 'told to break a leg,' that's because of the old belief that it is bad luck to wish someone good luck.
  • Our body's longest muscle is the Sartorius muscle, which is present in legs.
  • Running forms leg muscles faster and better since it uses all of the leg muscles.
  • The average person takes about 6000-9000 steps/day.
  • In his complete lifetime, the average person walks up to 43 miles.
  • In yoga, with" legs high up the wall," posture relieves tired legs and also reduces stress and anxiety.
  • Around 55% of women suffer from varicose veins due to prolonged standing.


This article covers most of the interesting facts about various parts of the human body. These facts will help in boosting and upgrading your knowledge. It covers your simple day to day facts, which you miss or don't realize. This article will assist you to keep pace with the developing world and renewing your awareness to the next level.


Written by
Dr. Pallavi Chaudhari
Dr. Pallavi Chaudhari is a well known Dentist practicing in Ratlam, India. She loves reading and sharing her knowledge and experience by writing online. She is an excellent creative writer apart from her profession. You can follow her on Instagram at @drpallavijain.

Check out other articles written by Dr. Pallavi Chaudhari .