Many of you may have heard rumors that thinning hair is inherited. Therefore, in this post, we will explain the relationship between thinning hair and heredity.
However, thinning hair can also be caused by other factors besides heredity. This article also introduces factors other than heredity for thinning hair and measures to control them.
Whether you are worried about thinning hair in the future or not, please take a look at this article and be more aware of your hair so you can take care of it fully!
Thinning Hair is Inherited
You may have heard rumors that if your father or grandfather has thin hair, your son will also tend to have thin hair. Hair is made from hair matrix cells, and since the hair matrix cells contain genes inherited from their parents, it can be said that hair quality and thinning hair are inherited.
There are multiple genes that affect thinning hair, but there are two genes that have a clear relationship with thinning hair. From here, we will explain the two genes while touching on the relationship between heredity and thinning hair.
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Reasons Why Parent-child Inheritance is Deeply Involved in AGA (Male Pattern Baldness)
There is a close relationship between AGA thinning hair and genes. Understanding the mechanism of AGA reveals the relationship between genes and thinning hair, so let’s first look at the mechanism of AGA below.
AGA, also known as “male pattern baldness,” is caused by dihydrotestosterone and “receptors,” which are produced by the binding of the male hormone testosterone to the enzyme 5α-reductase.
Androgen receptors are present on the hairline and crown. This receptor has the function of catching male hormones and transmitting the action of hormones to cells. When the receptor catches the converted dihydrotestosterone, it increases the hair loss factor (TGF-β) that promotes hair loss and stops hair growth.
Hair loss factor (TGF-β) disrupts the hair cycle of hair that should still grow. The number of hair loss progresses by shifting to the period when the hair that was in the growth period changes (regression period). In addition, due to the hair loss factor, the growth period is short, the catagen period is long, and the number of hair loss gradually increases. By these two mechanisms, hair loss due to AGA progresses.
The above is the mechanism of AGA. With this in mind, we would like to introduce two genes related to thinning hair as the reasons why AGA and heredity are closely related.
The activity of 5α-reductase
AGA occurs when testosterone is converted to dihydrotestosterone by 5α-reductase. The activity of 5α-reductase, which has the ability to cause AGA, varies from person to person, and testosterone is more likely to be converted to dihydrotestosterone depending on the degree of activity.
This “high activity” depends on genetic information and is easy to inherit from parent to child. Since it is transmitted by “dominant inheritance”, if there is a thinning hair in either the father’s or mother’s family, it will inherit the thinning hair constitution.
By the way, dominant inheritance is a method of inheritance that develops when a pair of genes are inherited from parents and one gene (gene mutation) with some change is inherited.
Receptor susceptibility is inherited from parent to child as well as activity of 5α-reductase. If the receptor is highly sensitive, it acts on the signal that stops hair growth when it catches dihydrotestosterone.
This “strength of sensitivity” is transmitted by atavism. See the figure below.
|Maternal grandfather: X Y||Mother: X X||Son (self): X Y|
|Maternal grandmother: XX|
|Paternal grandfather: XY||Parent: XY|
|Paternal grandmother: XX|
If the maternal grandfather ( XY ) has thin hair, the child also inherits the sensitivity. A female mother who inherits the gene ( X ) does not develop AGA, but a male son who inherits the sensitivity ( XY ) is more likely to develop AGA.
Other Factors Other than Heredity that is Deeply Involved in Thinning Hair
So far, we have explained that thinning hair has a strong relationship with heredity. Although thinning hair is inherited, it can actually progress due to other factors such as stress, lifestyle-related disorders, smoking, and incorrect hair care.
In other words, even if parents and grandparents do not have thinning hair, they may suffer from thinning hair and alopecia such as AGA due to factors other than heredity as described above.
On the other hand, even if parents or grandparents have thin hair, it may be possible to suppress the progression by taking measures according to the cause and symptoms. There is no need to give up “because thinning hair is hereditary”. Let’s immediately adopt the easy-to-start thinning hair countermeasures introduced below.
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Easy-to-start Thinning Hair Countermeasures
The following are some of the easy ways to prevent thinning hair.
◆ Reduction of Stress
When you are stressed, your body does not rest, and the parasympathetic nerves that normally work at night or at when you relax do not work well. Instead, only the sympathetic nerves that work when the body is actively moving work, leading to contraction of blood vessels and poor blood circulation due to the action of increasing blood pressure.
Poor blood circulation can lead to insufficient nutrition for the scalp and hair, causing thinning hair to be drawn. Find a stress-relieving method that suits you and avoid accumulating stress.
◆ Review of Lifestyle
Disorders in lifestyle can also cause thinning hair. Be careful if you have many opportunities to eat fast foods, instant foods, etc., drink excessively, or eat only high-fat foods.
You may also be undernourished on a diet. In particular, if the protein that is the raw material of hair is insufficient, the hair will become weak and cause hair loss.
◆ No Smoking
Smoking habits are not good for the scalp environment as they constrict blood vessels. Smoking cigarettes can lead to poor blood circulation and can adversely affect the hair cycle.
Smoking cessation is a countermeasure from the aspect of removing negative factors for the scalp, hair, and body, as well as reviewing eating habits and lifestyle.
◆ Use of Scalp Care Products
As a measure against thinning hair, it is also important to have a positive effect on the scalp and hair. Neglecting scalp care can lead to dandruff and itching, which can lead to the development of thinning hair over a long period of time.
Scalp care products include the use of hair restoration and shampoos. Hair restorers have a strong image of being used after you start to worry about hair loss and thinning hair, but they can also be used for scalp care. If you want to take care of your scalp with a hair restorer, we recommend “Polypure EX”.
“Polypure EX” contains 4 active ingredients (carrot extract, Swertia japonica extract, dipotassium glycyrrhizinate, pantothenyl ethyl ether) to suppress dandruff and itching and keep the scalp environment healthy. In addition, it contains a unique moisturizing ingredient “Biopolyphosphate”, which can be expected to prevent the scalp from drying out.
Also, considering that it is used by those who have a rough scalp, “Polypure EX” does not contain additives such as fragrances and coloring agents. In addition, a patch test for sensitive skin (* 1) and a 24-hour occlusion patch test (* 2) are also conducted at the time of manufacture, and “Polypure EX” is a hair restorer manufactured with a focus on low irritation.
◆ Review of Shampoo
The shampoo has a great influence on the hair and scalp environment. Since new hair is constantly produced on the scalp, it is a site where metabolism is active. Therefore, it is an environment where sebum and dirt easily accumulate and germs can easily grow.
Insufficient cleaning of the scalp can lead to deterioration of the scalp environment and skin problems due to the effects of germs, so removing excess sebum with shampoo and keeping the scalp clean will help maintain healthy hair.
“Polypure Scalp Shampoo” is a shampoo made by paying attention to the dirt on the pores that hinder hair growth. It removes stubborn sebum and styling products, and cleans the scalp environment.
In addition, 24 kinds of botanical extracts containing moisturizing ingredients moisturize the scalp and keep the hair and scalp healthy. It is a shampoo that can be expected to have a hair and scalp care effect as well as hair and scalp cleansing, so why not take it as scalp care?
* 1 According to S2 Research Lab
* 2 According to AMA Laboratories
Correct Measures can Suppress the Progression of Hereditary Thinning Hair
In this article, we have explained in detail the relationship between thinning hair and heredity. Since the hair matrix cells that make hair contain genes inherited from parents, not only hair quality but also thinning hair is inherited.
However, it is not good to give up because it is hereditary or to feel relieved that it is okay because it is not inherited. Since thinning hair is deeply involved in factors other than heredity, it may be possible to promote or suppress thinning hair depending on the lifestyle.
Why don’t you use this as an opportunity to review your daily life by understanding the factors of thinning hair and the correct measures for thinning hair?