What are the reasons for thinning hair? We also introduce the characteristics of people who are prone to it and how to prevent and improve it.

この記事の概要

Many people may have problems related to thinning hair, such as thinning of the top of the head or spreading of the whirlpool. In order to prevent thinning hair, it is important to first understand the causes and characteristics of those who are prone to it, and then take appropriate measures. This article introduces the causes, prevention and treatment methods.

The main causes of thinning hair

There is not just one cause for hair loss. Since the effective treatment varies depending on the cause, it is important to first know the cause in order to deal with hair loss appropriately. Here, we will introduce the factors that are thought to be the main causes of hair loss .

Male hormone conversion

AGA, one type of hair loss , is thought to be caused by the conversion of male hormones. When the male hormone testosterone is converted into dihydrotestosterone and binds to the hormone receptors in hair follicles, the hair cycle is disrupted, making hair loss more likely. When the hair cycle becomes shorter than normal, hair in the middle of growth falls out, leading to hair loss .

Genetic factors

Genetics is also thought to be one of the factors that cause thinning hair. AGA, which is male hormone-induced alopecia, is said to be influenced by genetics, and currently, it has been reported that around 81% of cases are caused by genetics. If you have a high number of hormone receptor genes that bind to dihydrotestosterone due to genetics, your risk of developing AGA will increase. Although treatment at the gene level has not been established, AGA treatments from other angles are currently being carried out .

Smoking a cigarette

People who smoke cigarettes also experience hair loss . This is very important. Cigarettes contain nicotine, which constricts blood vessels. When nicotine narrows the capillaries, it becomes difficult for nutrients and oxygen to reach the scalp. Also, smoking consumes large amounts of vitamins necessary for hair growth, which leads to hair loss .

Irregular lifestyle habits

Poor lifestyle habits can easily lead to hair thinning . An unbalanced diet and nutritional deficiencies are one of the causes of hair thinning . A lack of protein, which is the material that hair is made of, and minerals such as zinc that support the growth cycle, can prevent hair growth from being promoted, making hair thinning more likely. In addition, hair growth and development occurs during sleep, so continued lack of sleep can easily lead to hair thinning .

Too much stress

Excessive stress is one of the causes of thinning hair . Thinning hair is closely related to male hormones, so if hormone balance is disturbed by stress, hair growth may be inhibited. In addition, when the sympathetic nervous system becomes active due to stress, blood vessels may constrict, which may cause poor blood circulation to the scalp. This will hinder hair growth as it becomes difficult for nutrients to be transported to the head through the blood.

External damage to the scalp

External damage such as coloring and perms is also one of the causes of hair thinning . Although not all of them are directly related to hair thinning , it can be said that inflammation caused by applying harsh chemicals can worsen the scalp environment and make hair thinning more likely. Another type of external damage is ultraviolet rays. If you are exposed to ultraviolet rays for a long time, your scalp will be damaged, worsening the scalp environment and making hair thinning more likely.

Characteristics of people who are prone to thinning hair

Here we will introduce the characteristics of people who are prone to thinning hair . If you are starting to notice thinning hair on the top of your head or are concerned about baldness at the crown of your head, check to see if you are prone to thinning hair . If any of these characteristics apply to you , it is important to take more thorough preventative measures to prevent hair loss .

Damaged hair

People with damaged hair are more likely to suffer from hair loss, so you need to be careful. Excessive hair coloring, perms, and direct exposure to sunlight can damage your hair and have a negative effect on your scalp. This can make it difficult for your hair to grow properly and can lead to hair loss , so if you have damaged hair, check to see if you are irritating your scalp too much.

Sleeping for a short time

People who sleep for a short time or have poor quality sleep tend to have thinning hair . Hair grows while you sleep. Also, the hormones that make hair grow are secreted in large amounts while you sleep, so people who consistently have short sleep times should be careful about thinning hair .

Washing your hair excessively

Some people wash their hair more than necessary, believing that a poor scalp environment caused by dirt and sebum will cause hair loss , but this can actually cause hair loss. If you wash your hair too many times, you will wash away the sebum your scalp needs, and when your skin dries out, your body will tell you to produce sebum, which will lead to excessive sebum secretion. Excessive sebum can worsen the scalp environment and ultimately lead to hair loss .

Tips to prevent thinning hair

To prevent thinning hair , it is necessary to keep the scalp healthy. Basically, be conscious of keeping your scalp clean. If you do not wash your hair, sebum may clog the pores and inhibit hair growth. On the other hand, scrubbing your hair too hard can damage the scalp and lead to thinning hair . When washing your hair, it is recommended to massage the scalp with the pads of your fingers. It is also important to eat a balanced diet and get an adequate amount of sleep on a regular basis.

Tips to improve thinning hair

Here we will introduce treatments for when thinning hair occurs. If you notice any discomfort, such as increased hair loss or your scalp becoming more visible, it is important to take action immediately. Currently, AGA treatments include oral and topical medications, hair transplants , injection therapy with ingredients that promote hair growth, such as growth factors and cytokines, and LED and low-power lasers. It is difficult to decide on your own which treatment is effective, so if you are concerned about thinning hair , first visit Hiro Clinic and receive a diagnosis from a doctor.

summary

There is not just one cause for hair loss , but many factors, including genetics, poor lifestyle habits, stress, etc. In order to effectively treat hair loss, it is a good idea to first visit a hospital or specialized clinic to get advice on what is causing the hair loss and what treatment methods are effective.

 At Hiro Clinic, we offer AGA oral medication, regenerative medicine, and hair transplant treatments for hair loss that has not improved with oral medication or injection treatments. We use the latest technology and provide careful feedback on the progress and results of treatment, so if you are worried about your hair loss not improving, please feel free to contact us.

FAQ

Q: Should I see a doctor as soon as I start to worry about thinning hair?

A: It is up to the individual to decide whether or not to undergo hair loss treatment. If you are concerned about your hair loss and want to improve it immediately, visit a hospital or specialized clinic. If it is only a vague concern, one option is to try using over-the-counter medication and see how it goes. If over-the-counter medication does not improve the symptoms and instead makes them worse, we recommend visiting a hospital or clinic.

Q: Is hair transplantation effective for thinning hair?

A: Autologous hair transplantation is a treatment method in which hair from another part of the body is transplanted to the area where thinning hair is a concern, and it is expected to be effective against thinning hair. By transplanting healthy hair along with the scalp, it will grow again after the transplant, and thinning hair will be eliminated.

Q: Are hair restorers and hair regrowth products effective in treating thinning hair?

A: Hair growth and hair restoration products, both pharmaceuticals and quasi-drugs, are recognized to be effective in preventing hair loss, dandruff, and itching, so they are expected to be effective in preventing thinning hair. If you are trying to prevent thinning hair or are in the early stages, it may be a good idea to use them while checking the condition of your scalp. If your thinning hair is progressing, we recommend that you visit a hospital or specialized clinic.

References

Causes of thinning hair due to AGA | D Clinic [Official] Comprehensive clinic for thinning hair and AGA treatment

【Characteristics of people prone to baldness】7 signs of thinning hair, characteristics of people prone to baldness, and measures to take | AGA Medical Care Clinic [Official] for AGA, hair loss, and thinning hair treatment

Completely clarify the difference between those who suffer from hair loss and those who do not! – Osaka AGA Kato Clinic

Explanation of the causes, prevention and treatment of thinning hair (especially male pattern baldness) | Rohto Pharmaceutical: Product information site

[Doctor-supervised] What is hair transplantation? Explaining the effects, side effects, and precautions | [Official] For thinning hair and hair loss treatment, AGA Skin Clinic (A-Suki)

Q&A about AGA (androgenetic alopecia) including thinning hair and baldness symptoms | Frequently asked questions from patients | D Clinic [Official] Comprehensive clinic for thinning hair and AGA treatment

よくある質問

QShould I see a doctor as soon as I start to notice thinning hair?

AIt is up to the individual to decide whether he or she is willing to undergo treatment for thinning hair. If you are concerned about thinning hair and want to improve it immediately, see a hospital or specialized clinic. If you are only somewhat concerned, you can try over-the-counter medication and see how it goes. If the symptoms do not improve with over-the-counter medications and in fact worsen, a visit to a hospital or clinic is recommended.

QIs hair transplantation effective for thinning hair?

AHair transplantation is a treatment method in which hair from other parts of the body is transplanted to areas where thinning hair is a concern, and is expected to be effective against thinning hair. By transplanting healthy hair from the scalp, the hair grows back after transplantation and the thinning hair is eliminated.

QDo hair growth and hair regrowth products help improve thinning hair?

APharmaceuticals and quasi-drugs for hair growth and hair regrowth are approved for their efficacy and effectiveness in preventing hair loss, dandruff, and itching, and are therefore considered effective in preventing thinning hair. It is a good idea to monitor the condition of the scalp while using these products if thinning hair is prevented or in the early stages. If thinning hair is in an advanced stage, a visit to a hospital or specialized clinic is recommended.

参考文献

記事の監修者


岡 博史 先生

CAPラボディレクター

慶應義塾大学 医学部 卒業

医学博士

皮膚科専門医