Incredible facts about the human body. Hair and nails
Despite the fact that they are not vital organs of the human body, most people spend a lot of time taking care of their hair and nails.
The next time you go for a haircut or manicure, remember these facts.
Facial hair grows faster than any other body hair. If the average person had not shaved his beard all his life, then she would have grown by 9 m.
A person constantly loses hair, which is approximately 60-100 pieces per day. The amount of hair lost depends on several factors, among which are: change of season, pregnancy, illness, diet, age.
Female hair is half the diameter of male hair. Male hair is coarser than female.
The diameter of male hair can vary greatly.
One human hair is able to withstand a weight of 99 g. Therefore, the story of Rapunzel actually looks believable.
The fastest growing nail on the middle finger.
It is not yet known why, but nail growth is associated with long fingers.
The longer the finger, the faster the nails will grow.
Who has more hair
Some people have an increased amount of hair, almost like chimpanzees. In this regard, people are not very different from monkeys. We all have a lot of hair, but we don’t notice this, since most hairs are too thin and small.
Blondes have more hair than brunettes.
Hair color determines their density. Each person has an average of 100,000 hair follicles, each of which is capable of producing 20 separate hairs throughout a person's life.
Blondes have an average of 146,000 follicles, and people with black hair tend to have about 110,000 follicles. People with brown hair have an average of 100,000 follicles and redheads have the least thick hair, about 86,000 follicles.
Interesting fact! Superimposed keratin scales form the outer shell of the hair. The shaft is the visible part of the hair. The hair root is the part of the hair that is under the skin. The hair root is in turn surrounded by a hair sac called a follicle.
The type of hair depends on the shape of the follicle. A little curly hair grows from an oval follicle, curly from a kidney-shaped, and straight from a round follicle.
Toenails grow 4 times faster than toenails.
If you notice that you cut off the nails on your hands more often, then this does not seem to you.
This is due to the fact that those nails that receive a greater external impact and are used more often grow faster.
On average, nails on both legs and arms grow by 0.25 cm every month.
The life expectancy of human hair on the body averages from 3 to 7 years. Despite the fact that your hair grows every day and quite quickly, they can live very long, provided that they are well-groomed.
With age, a person loses more than 50% of his hair, for an unknown reason. You lose hundreds of hairs every day, but to be noticeable loss, you need to lose several times more.
Human hair is virtually indestructible. Human hair is falling apart at such a slow pace that it can be said that it is eternal.
If you have never thought about this, then the facts will say a lot: hair cannot be destroyed by cold, climate change, water and other natural elements. They are also resistant to many types of acids and corrosive chemicals.
Note! The main hair protein is keratin. It is keratin compounds that form strong, complex proteins, which in turn provide hair resistance to external factors.