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All[Finasteride] Hair common sense - That's a good idea.
This is a hair common sense internet blog pugle.
Something that hair loss people should know, \n There's also common sense that I've never known before.
Personally, I've always been curious about how I've been half curly since my adolescence.. I found out why ;
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Common sense \n \n \n1. Function of hair \n2. Type of hair \n3. Hair shape \n4. Hair shape \n5. Life of 60 months \n5. Structure of hair \n6. Period of hair \n1) Oriental medicine view \n7. Hair growth rate \n9. Korean hair density - Lower than white people or black people \n10. Hair loss and hormones \n1) Types of hormones that cause hair loss \n(1) Male hormones \n① Androgen Receiver Proteins \n② 5α-Reductase \n(2) Aromatase \n(2) Cotisol \n(3) Estrogen (female hormone) \n(4) Progesterone \n(6) Hormones related to hair loss - Description \n3) Hair loss in the chest (beard, arms, legs) \n11. Relationship between hair abnormalities and diseases \n1). Hair loss gene from whom?
15. Relationship between baldness and cancer \n16. Secrets of curly hair \n1) Flat shape of hair cross-section causes...70% of Koreans are concerned, \n2) Can they change their curls to straight hair.
17. My hair turned red.
1) Color of Hair \n2) Melanin Pigment \n18. Characteristics and Management of Hair by Age \n \n \n 1. Function of Hair \n \n \n \n Hair provides sexual charm, although not life-related, hair protects the scalp from sunlight, and eyebrows or eyelashes cover the eyes from sunlight or sweat drops.
2. Types of Hair \n \n \n There are four types of hair covering the skin of our human body.
1) At birth, a fetus occurs in the mother's belly, and is eliminated at birth and replaced by a soft hair with thin, light-colored hair that appears for the first time in that life for about 20 weeks.
2) Fluffy hair \n \n \n refers to the delicate hair covering most of the body, and depending on the part of the human body, it has a rich pigment and is replaced by thick and strong seed hair.
3) Intermediate hair (intermediate) \n \n \n refers to hair with an ambiguous distinction between hair and seed hair. The distinction is based on its diameter rather than its length, most of which are 20 to 40 microns in diameter, and most of the seed hairs are 60 to 120 microns. \n \n \n4) seed hairs (St. Mary's, apocalypse hair, terminal hair) \n \n \n Adult hair, eyebrows, eyelashes, beard, armpit, and shin hair are all seed hairs. The degree to which soft hair is replaced by seed hair is influenced by genetic predisposition and endocrine organs. For example, hair on the scalp changes to seed hair in men, women, Koreans, and Westerners, and chest hair changes to seed hair only in some Koreans or more Western male adults, and in most women, it remains as a soft hair.
Armpits and vulva also show seedlings in adult men and women of all races, and male baldness, on the contrary, changes from seedlings to fluffy, and the degree also varies considerably depending on the endocrine function and genetic predisposition of each individual.
3. Hair 髮型 \n \n \n \n \n \n P. Broca (1824-1880) classified 5 hair types and R. Martin (1864-1925) classified 11 hair types, but if summarized, it can be broadly classified into 3 types: straight hair (直毛), wave hair (波狀毛), and axial hair (縮毛).
1) Straight hair \n straight 狀 or very weakly wavy hair. It includes the yellow people of Asia, Eskimo, American Indians, and Polynesians.
2) It is a hair that forms a tetrapod \n wave (波狀), and there are various degrees of wave. In some cases, those with strong degrees are wound in a thick coil shape. It can be found in white, Australian, Indigenous, Indonesian, and Ethiopian people.
3) Congrats \n Very small shriveled hair, which has a shriveled one and a brother called spiral hair (螺旋毛). The latter is a spiral hair that shrinks into a spiral shape and gathers little by little, about the size of a large bean, and the hair is very strong. It is characterized by African black, Koisan, Melanesian, Papua, and Andamanians.
4) Comparing the three shapes \n When the cross-section of the hair is observed under a microscope, the straight hair is closest to the round side, the tetrapod is a weak ellipse, and the flatness (扁 度) becomes stronger as the degree of cringe increases. In addition, the direction of the hair is almost perpendicular to the skull, and the direction of the hair is oblique as it shrinks. In other words, it can be seen that the cringe of the hair is also related to the shape of the hair or the direction in which the hair is formed.
4. Hair - 60-month lifetime \n \n \n The individual difference is large, with about 60,000 to 70,000 strands saying there are few hairs, and 130 to 140,000 strands saying there are many. The frequency is about 500 strands per cm2. It grows about 1.3 to 2cm a month, and women's hair grows faster and more than men. In particular, hair grows up to 5-6cm in armpits and genital areas and 1cm in eyebrows, nose hair, and inner hair, while growing up to 1.5-2m. It grows about 0.3 to 0.4 mm per day and about 1 cm per month.
Once hair is produced, it goes through three stages: growth-degeneration-restriction-restriction. About 90% are long-term hair, and about 5 years correspond to this period. In addition, the rest period lasts for three months and the regression period lasts for three weeks. During this phase, new hair is born and old hair is lost and ends its life.
Since an average of 30 to 100 strands of hair are lost a day and new ones are created, there is no need to worry about losing 50 to 60 strands of hair. As I mentioned earlier, this is why you don't have to worry too much when you wake up in the morning and see the hair on your pillow. However, if you go too far, it is more likely to be alopecia if you lose more hair than if you don't have enough. In this case, more than 100 strands of hair are lost a day.
After a certain period of growth, hair falls out at the end of its life. And after a few months, it starts to grow back in the hair hole. Human hair has a constant and regular growth cycle. For example, the hair growth cycle is lost after the JARADA CLINIC stops for three months for three to six years. Nevertheless, hair does not fall out all at once because each hair has a different life cycle.
5. Hair structure \n \n \n \n \n \n follicles are shaped like stems growing from the bulbs of plants. This bulbous part is called the mother tongue (毛球). At the bottom center of this hair, there is a 毛乳, where capillaries form a web like a spider's web. The area surrounding the mother 質 is called mosquitoes (毛 base 質).
Mosquitoes are composed of mosquitoes and melanocytes, and cell division is very active and corresponds to the production plant of fur. It differentiates from the hair matrix cells and becomes angulated as it transitions to the skin surface, and the innermost part of this angulated structure is hair (mosquito, 毛幹).
The hair is composed of three types: 毛髓質, 毛皮質, and 毛 皮 from the center to the outside.
In addition, this hair is surrounded by super-skin (側毛根墅: inner hair + outer hair 側毛根墅).
Melanin cells exist between the hair matrix cells in the hair, and melanin produced by these cells is later probed by the cells that will form the hair, determining the color of the hair according to the amount of melanin.
Near the surface of the skin, a sebaceous gland (皮脂腺), a set of hair follicles, runs like a grapevine, and the discharge pipe through which the secretions of these sebaceous glands come out is connected to the pores.
Sebum keeps our skin and hair from drying out while keeping it shiny and soft. Under the sebaceous gland, there is a fleece muscle (毛筋), which is a muscle that makes hair stand.
When the skin is exposed in cold weather, the skin becomes chicken flesh, and the hair stands upright even when experiencing very terrible things, which is a phenomenon that occurs when the fleece muscles contract.
6. The cycle of hair \n \n \n \n \n \n \n \n \n Human hair does not continue to grow the same hair in its lifetime as the amount of merino species, but naturally falls out after a certain period of time (hair has about 70 to 80 natural hair loss per day), and after a while, new hair grows.
This is called the lifespan of the fur or the mother cycle (毛周期), and consists of the growth period, the regression period, and the rest period. The period depends on the part or age of the body, but the longer the growth period, the longer the hair grows. 85% of the hair is in the growing season, and it is common to continue for 5-7 years, but some of them reach 25 years, so there are people over 2m.
The hair of the degenerator is 2%, and after 2 to 3 weeks, it enters the resting period and is eliminated. Since each hair tissue has an independent mother cycle (mosaic pattern), there is no molting phenomenon like animals that have a Japanese 周期, such as mice and rabbits.
(1) It is the period when growth organs \n hair continues to grow, and cell division is active in the basal part of the hair follicle, that is, in the hair cell.
(2) Regression phase \n It is a time when the growth activity of hair follicles stops and shrinks rapidly, and the shape of the hair at this time is similar to a club.
(3) Rest period \n Hair follicles at this time stop activities completely and wait for hair loss to come soon. It is pushed out and pulled out by the growing organ hair that appears newly at the base of the resting hair, or is pulled out by mechanical actions such as brushing or washing hair. The shape of the hair that falls out is in the form of a club.
When hair is extracted from the normal scalp, about 85-90% of hair is long-term, 10-15% is resting, and the number of regressive hair is small, making it difficult to find it. There are about 140,000 blonde hair, about 100,000 brown hair, and about 90,000 red hair, and fewer than 100 are lost in a day from normal people and new growth.
2) Oriental Medicine Opinion \n If the renal (腎) function is weakened and blood is insufficient, hair cannot be produced. As a result, hair loss symptoms appear. In particular, wrong hair loss in daily life can also cause hair loss.
What should be done to prevent and treat such hair loss. To get an answer to this, you first need to know the hair cycle.
So-called hair loss is actually a problem for everyone. Healthy people also lose 60 to 70 strands of their hair a day. It usually falls out when combing or washing hair. This is because hair has a lifespan. Therefore, after the hair is lost, new hair will soon sprout from the pores (毛孔). This is the hair cycle (週期).
This is the same reason that plants sprout in spring, thrive in summer, wither in autumn and rest in winter, and sprout again in spring of the following year.
In general, the lifespan of a strand of hair is 2 to 5 years for men and 3 to 5 years for women. The amount of hair is about 10 strands. However, since each hair's cycle is all out of alignment, it does not fall out all at once. The result is that the hair stays in place forever. However, if new hair does not sprout after the hair has been lost, the amount of hair will gradually decrease. At this time, it soon develops into a situation where there is less hair.
In addition, more than 70 strands of hair are lost a day, and even if the number of new hair does not reach the number of missing, the number of hair continues to decrease.
(Source: Transferred from Jaeseop Kim's oriental medicine clinic home) \n \n 7. Growth rate of hair \n \n \n The rate at which hair grows depends on gender, season, health, and age. Women's hair grows faster than men, and summer grows faster than winter. There are also differences in age, so hair grows the fastest in adolescence.
The reason why hair in each part of our body always maintains a certain length according to its position is that each part has a certain hair cycle, and hair in other parts has a shorter hair cycle of 28 years of growth, 2-4 weeks of regression, and 2-4 months of rest.
When looking at the growing organs in other areas, armpit hair, conspiracy, chest hair, and eyelashes are 1-6 months, legs 5-7 months, arms 1.5-3 months, fingers 1-3 months, and rest periods are usually 1-4 months. Hair in each area also showed slight differences in growth rate, growing on average 0.37-0.44 mm of hair, 0.27-0.38 mm of beard, 0.3 mm of armpit hair, 0.2 mm of conspiracy, and 0.18 mm of eyebrows.
There is also a seasonal difference, so hair growth becomes at its peak between spring and early summer, and as fall, a large amount of hair enters a resting state, increasing hair dropout. As you get older, your hair grows slightly differently, but it grows faster until you are in your teens and then slower after your 20s.
The average rate of hair growth is about 0.4mm per day, approximately 1.3cm per month. Therefore, if you grow your hair without cutting it for a year, it will grow about 15.6 cm (1.3 cm × 12 months) on average.
But hair doesn't grow indefinitely. After it grows to a certain extent, it falls out after a preparation period. Each hair varies from person to person, but it grows for about three to ten years.
It is calculated that people with three years of hair growth, that is, those who grow hair for only three years, only grow 46.8 cm (15.6 cm × 3 years) no matter how long they grow their hair. No matter how much anyone tries to grow their hair, there is a limit to it not growing anymore.
Then let's analyze the myth that hair grows quickly when you think of wild thoughts. The assumption that wild thinking affects hair growth points to the role of hormones. For example, when you become pregnant or take contraceptives, hair follicles grow faster due to hormonal changes.
The same phenomenon occurs when there is a conspiracy during puberty, when hormones are secreted vigorously, and in the case of men, more hair is produced on the body. The claim that wild thoughts lead to hormone secretion and grow the head quickly is speculation in this context, but no specific experimental results have been made yet.
1) Hair grows fast at 10 a.m. to 11 a.m. \n \n In the case of hair, it hardly grows at night and then begins to grow in the morning and grows at the fastest rate at 10 a.m. to 11 a.m.
2) Hair grows about 2cm a month.
You can see that hair above your head grows at a rate of 2cm every month. Another interesting fact is that men spend less time before hair is exposed outside the skin's surface than women. However, once it comes out of the skin, the woman surpasses the speed of the man and becomes much faster. In addition, the rate of growth under the skin was found to be constant regardless of age.
3) It takes four to five months for hair regeneration.
Hair growth is not fast. The 週期 of hair includes the growth 期, the transition 期, and the rest period (休止期), followed by the regeneration process.
The pause can be months, but it takes 4 to 5 months to play again. Generally, it takes about 120 to 130 days. If the hair is to be regenerated, the pores (毛孔) turn black at 3 to 4 months and can only get better at 4 to 5 months, so this should be measured.
8. The components of hair \n \n Hair is a hard keratin protein component. Keratin is easily denatured by changes in heat or acidity (酸度). Therefore, you should refrain from washing your hair with hot water or going to saunas often. Hot air harms the health of hair roots. You should also avoid acid rain or snow. The same goes for direct sunlight in summer and autumn. When the hair is exposed to ultraviolet rays, the melanin pigment bleaches and turns dark red. Dyeing at this time damages hair roots and promotes hair loss. It is important to keep in mind that the lack of shine and stiffness of hair after vacation is due to salt, sweat and strong UV rays.
Bleaching using hydrogen peroxide, which is popular among some young people, does not have a significant effect on hair loss itself, but indiscriminate use should be prohibited because it damages hair. Dyeing agents and some anti-hair loss drugs can cause allergic dermatitis such as pruritus and rash, so they often suffer unexpectedly. You must consult a specialist before choosing to prevent side effects.
9. Korean Hair Density - Lower than Whites and Blacks \n \n \n Koreans' hair density is significantly lower than that of Whites and Blacks, a study published in the Journal of the American Academy of Dermatology. The Korean Catholic Medical University's Dermatology Department and Baylor Hair Research and Treatment Center compared hair density in Korea to other races. The results showed that the total number of hair, hair growth/shape (St. Mary's), and growth hair were significantly lower in Koreans when compared with clinical data in black and white people.
Hair follicle density was also lower than that of black or white people. On the other hand, in the case of Korean women, the number of seedlings was significantly higher than that of Korean men. The researchers concluded that Koreans have lower hair density than whites and blacks.
10. Hair loss and hormones \n \n1) Types of hormones that cause hair loss \n \n \n Most of the male and female hair loss are known to be male-type alopecia. Male alopecia is known to be caused by a hormone called dihydrotestosterone (DHT), a by-product of male hormones, and DHT is produced in large amounts in the head by an enzyme called 5-alpha-reductase. When DHT acts in hair follicles with genetic predisposition, the hair follicles gradually shrink and the hair becomes shorter, eventually contracting and degenerating.
(1) Male hormones \n \n \n Male hormones (androgen) are synthesized and secreted by the adrenal cortex and gonads, and testosterone and dihydrotestosterone (HT) are typical, and DHT is the main hormone that causes male alopecia.
Enzymes such as 5α-Reductase and aromatase are involved in the formation of sex hormones. The formation process of sex hormones has a selective function of testosterone and DHT during puberty.
Testosterone is involved in increased muscle volume, growth of penile and scrotum, voice changes, maleization conspiracy and armpit hair, sperm formation, and Dihydrotestosterone (DHT) is involved in prostate growth, acne, Virgin Mary growth (myelitis, limbs, trunk, outer ear, nose hair), and anterior posterior retraction.
Testosterone is essential for normal male functions, such as maleization and spermatogenesis, but DHT is not essential.
① Androgen Receptor Proteins \n In order for androgen (male hormone) to play a role, an androgen-receiving protein that accepts androgen is required, and the male hormone's action takes place by binding them. According to a study measuring androgen-receiving proteins, men and women with androgenic alopecia (bald) have more than 30% higher measurements in hair follicles in the frontal (front) with hair loss than in hair follicles in the occipital region without hair loss.
② 5α-Reductase \n5α-reductase has two isozymes (type 1 and type 2) and both are hormones that change testosterone to DHT.
Type 1 is mainly distributed in keratinocytes of sebaceous glands, epidermis and hair follicles, breastpox cells, and sweat glands, and type 2 is mainly distributed in the skin of the root sheaths, epidermis, vasectomy, seminal vesicles, prostate, and fetal genital organs of scalp hair follicles.
Both type 1 and type 2 are expressed in the outer root sheath of male and female androgenic alopecia patients, and in people with a birth defect of type 2 of 5α-reductase, and the androgenic alopecia does not occur or the front forehead is slightly backward.
③ Aromatase \naromatase is a hormone that converts to estradiol and estrone, female hormones, in the process of sexual hormone formation, and has the function of suppressing hair loss caused by male hormones. According to a study measuring the amount of aromatase, women are about six times higher than men in hair follicles of androgenic alopecia patients, which makes testosterone better transition to estradiol and estrone, and less transition from testosterone to DHT, so women's hair loss is milder than men and maintains front forehead lines. Excessive hair loss in men may be related to a lack of aromatase, which leads to increased production of DHT.
(2) cortisol \n \n hindered the onset from resting to growing organs. Both hair and body hair have growth inhibitory effects. When subjected to gonadectomy or adrenalectomy, the growth organs are accelerated for hair growth, but the growth inhibition effect is still effective for hair of the body. \n \n (3) estrogen (female hormone) \n \n \n The breast grows and strengthens ovarian function. It inhibits the function of androgen, a male hormone, and stimulates conspiracy, feminization, and hair growth.
(4) Progesterone (antibody hormone in women) \n \n The direct effect on hair growth is mild. It has almost a growth inhibitory effect on hair, but a growth promoting effect on hair of the body. \n \n (5) Thyroid hormone \n \n \n \n It promotes follicular activity, inducing the transition from resting to growing organs. Increasing the length of hair. It has a growth-promoting effect on both hair and body hair. Undergoing thyroidectomy, the rate of hair growth is slightly slowed, the diameter of the hair is slightly reduced, and growth inhibition is effective in both hair and body hair. In patients with hypothyroidism, armpit hair and conspiracy tend to be less. \n \n (6) decreased hair growth in pituitary hormone \n \n \n decreased pituitary function.
2) Hormones Related to Hair Loss - Comment \n \n The hormone that directly causes hair loss is known as dihydrotestosterone (DHT).. DHT is a metabolite produced by the action of an enzyme called 5-alpha reductase on testosterone, which combines with specific parts of hair follicle cells to cause a series of changes related to hair loss. In addition, DHT shortens the growing organs and lengthens the rest period during the hair growth cycle, so the size of the hair gradually decreases as the growth cycle continues. \n \n Testosterone affects the growth of armpit hair and conspiracy, while DHT affects beard and baldness. However, it does not affect hair growth, but only hair loss. The 5-alpha reductase enzyme is highly active in the area where hair loss occurs, and propecia, which is used as a treatment for alopecia these days, is the one that inhibits this enzyme.
Women have only half the 5-alpha reductase enzyme compared to men, while they have many enzymes called aromatase, which is especially distributed near the hairline of the front.. Aromatase inhibits the production of DHT, indicating that in women, the type of hair loss is different from that of men..
3) Hair on the chest (beard, arms, legs) \n \n Hair loss and hair growth on other areas (chest, beard, arms, legs) usually occur at the same time. Male hormones (androgen) are synthesized and secreted by the adrenal cortex and gonads, and testosterone and dihydrotestosterone (DHT) are the main hormones that cause male alopecia.
Enzymes such as 5α-Reductase and aromatase are involved in the formation of sex hormones. The formation process of sex hormones has a selective function of testosterone and DHT during puberty.
Testosterone is involved in increased muscle volume, growth of penile and scrotum, voice changes, maleization conspiracy and armpit hair, sperm formation, and Dihydrotestosterone (DHT) is involved in prostate growth, acne, Virgin Mary growth (chest, beard, limbs, torso, outer ear, nose hair), and posterior retraction of the frontal glands.
In conclusion, to put it simply, if you suddenly grow a lot of hair on your chest, you lose a lot of hair at the same time.
11. Relationship between hair abnormalities and diseases \n \n Check your hair once a month to determine your health. People's hair allows them to know their living conditions, the presence or absence of anguish, their health conditions, and even their jobs. This is because hair reveals everything exactly about a person.
In particular, hair is closely related to daily food life and autonomic nerve activities that support our lives. For example, circular hair loss caused by mental trauma or round head caused by overwork are visible examples. \n \n \n On the contrary, if you are mentally stable and nutrition is in balance with a regular and rhythmic life, you have beautiful hair.
Hair is metabolized just like cells. And that metabolism is proportional to the metabolism of cells in the body that are linked to hair. Therefore, hair reacts sensitively to changes in the body.
For example, the hair that caused a strand of abnormality can be seen as more than 10 million cells in the body. Therefore, it is valuable information for maintaining health to clearly find out whether there is an abnormality in the hair and the area that caused the abnormality.
1) When performing a hair test, check the changes in hair properties. For example, it distinguishes whether it has become flexible or hard.
(2) See if there is a change in the color of your hair.
(3) Check the occurrence of abnormal hair loss, atrophic hair, and round head.
(4) Check the area where there is an abnormality in the hair.
(5) How is your scalp?
(6) How is your normal condition?
2) Disease-specific hair abnormalities \n \n(1) When there is a disease of the stomach (胃) and intestines (腸): the top of the head falls out, and the scalp becomes oily and sticky.
(2) When you have heart disease: a reddish change appears in the 3cm area around the head kiln.
(3) When you have lung and respiratory diseases: the hair above your head is thinned and shrunk.
(4) When you have gallbladder disease: the right anterior side of the overhead kiln should be examined.
(5) When you have a physiological problem: the hair on the upper edge of the neck forms a wave shape.
(6) When I'm suffering from 風濕症: My hair is thinning and sticking to my scalp.
(7) When suffering from joint neuralgia: hair loss appears above the ear area or the amount of hair decreases.
(8) When you have optic nerve disease: hair loss appears on either side of the forehead or in the temple area.
(9) When there are symptoms of rotten teeth or periodontal fistula: hair around the ear shrinks.
(10) When suffering from rhinitis or sinusitis: An abnormality occurs in the hair in the front middle of the forehead.
(11) When you have hemorrhoids constipation: The hair from the front to the back of your head becomes busy.
(12) In case of loss of autonomic nerve coordination: Straight hair is curled in waves or becomes atrophic hair.
(Source: Gibb Jae-seop, transferred from the home of Korean medicine clinic) \n \n12. Baldness and heredity \n \n The son of a family whose father is bald is mostly bald. Basically, baldness is an inheritance. Then, if the father is bald, will all of his children be bald?
Everyone has genes in pairs. For example, when A has a bald gene, if the father is AB and the mother is a CD, the child may have AC, AD, BC, and BD. They have bald genes, but they don't have bald genes. Therefore, some of the same brothers may or may not have baldness. In the case of a daughter, even if she has the bald gene, the probability of becoming bald is very low. It is because of the influence of male hormones.
Having a bald gene doesn't mean everyone is bald. It is male hormones that are involved in bald gene expression. Because of the influence of male hormones, men are more bald than women. Also, you don't get bald before puberty.
It has a bald gene, but it is often not expressed. Even in the Goryeo and Joseon periods, the relative frequency of people with bald genes would have been the same as now. But there were not as many bald as there are these days. Baldness was not present at the time of a vegetarian diet, but baldness is increasing these days as meat consumption has increased.
The higher frequency of baldness and more severe progression in older people than younger people can be seen as the effect of aging. Epidemiological studies have shown that there are many arteriosclerosis and prostate hypertrophy among bald people. Arteriosclerosis is associated with aging and high fat diets are caused by cholesterol in particular.
Unfortunately, however, the bald gene has not yet been identified, so it is impossible to know whether the bald gene is retained or not.
13. Hair loss and age \n \n How old and when hair loss starts depends on the individual's genetic combination and the blood concentration of male hormones.
Hair loss does not all fall out at once, and it does not continue at a constant rate, but the speed of hair loss goes through a fast, late period, and a period of stabilization. However, as you get older, the total number of hair must decrease.
Even in people without the gene for hair loss, when they get older, some hair follicles are reduced. As a result, thick and thin hair are mixed, and overall thin hair appears to be thin.
14. Hair loss gene From whom? \n \n Hair loss genes can be inherited from either parent. A gene is a single chemical structure located in one part of the chromosome and consists of small pieces of DNA. Chromosomes always exist in pairs, and humans have 23 pairs of chromosomes, which are inherited one by one from their parents.
The genetic form of androgenic alopecia is not simple, so more than one gene is currently known to be involved in causing alopecia. When multiple genes are involved, it is called polygenic inheritance. Human chromosomes consist of a pair of sex chromosomes (XX or XY) and 22 pairs of autosomes, and the genes that cause hair loss are known to have autosomal inheritance.
The genetic factors of hair loss can be inherited from either the parent's or mother's family, and the genes on the mother's side have a slightly more important meaning. Because the genes that cause hair loss are dominant genetics, they occur even if only one of a pair of genes has it.
However, having a hair loss gene does not mean that everyone is bald. When you have a gene, what actually happens is called 'expression', and expressiveness, in which hair loss actually occurs, is deeply related to hormones, age, and stress. Currently, the gene that causes hair loss has not been clearly identified medically.
15. The Relationship Between Baldness and Cancer \n \n What does baldness and cancer have to do? However, it is not for all cancers. However, it is known to be associated with gastric cancer.
A general hospital had a 10-year history of investigation. In other words, we compared the amount of male and female hormones to 100 gastric cancer patients and normal people. As a result, bald and healthy people had higher amounts of male hormones. However, in the case of gastric cancer patients and those with a lot of hair, the amount of female hormones was higher. Those who were neither bald nor had stomach cancer accounted for the middle.
From the results of this experiment, it can be seen that the incidence of gastric cancer is also high for people with relatively high secretion of female hormones from the balance of sex hormones. In other words, people with high levels of female hormones do not necessarily have stomach cancer. The bottom line is that bald people are less prone to stomach cancer.
16. Secret of curly hair \n \n 1) The flat shape of the hair cross section is the cause...It is common for 70% of Koreans to have more curly hair because the hair shape of this \n \n is naturally determined by genetics, and curly hair is dominant over straight hair. However, in addition to changes in the body, such as sex hormones, there are acquired changes caused by curly hair or lack of hair growth from puberty.
Then why is your hair curly and straight.
The secret lies in the difference in the cross-sectional shape of curly hair and straight hair. If you cut a strand of curly hair and look at its cross section under a microscope, it is close to a flat shape, while the cross section of straight hair is round.
It is easy to understand why the shape of the cross section is a problem if you think about the paper. If you hold the bottom of the flat paper with your fingertips and stand it upright on your desk, you can observe that the paper bends immediately. In the case of flat-sided curly hair, it is the same as when flat paper is not upright. On the other hand, rolling paper into a cylindrical shape makes it easy to stand upright. A hair with a round cross-section can stand straight for the same reason.
Based on this principle, cylindrical shapes are often used to make objects that should not be bent, which is why the chimney or pillar of a building is cylindrical.
2) Can I change my curly hair to straight hair.
Unfortunately, there is no way to fundamentally treat curly hair by making the shape of the hair round.
However, with the recent development of perm technology, technology that can increase curly hair such as iron or straight perm has been developed, making it possible to tidy up and easily organize swollen hair.
However, you should be careful because straightening your hair using physical and chemical methods can cause damage to your hair, and your hair has no ability to self-recovery, so once damaged, the degree of damage increases.
17. My hair turned red.
1) Hair Color \n \n Hair color comes in a variety of colors, including black, brown, red, blonde, and white, but these colors are determined by the degree of melanin pigment synthesis, such as skin color. Melanin pigments play an important role in coloring hair and protecting the scalp from excessive ultraviolet rays.
2) Melanin pigment \n \n The pigment in black and dark brown hair is tyrosine melanin pigment, and the pigment in yellow and red hair is phenomelanin pigment. These two types of melanin pigments (granules) are color determined by their size, amount, and synthesis. If the melanin granules are large and there are many, they become black because they absorb light, and if there is little melanin granules, the light is reflected and turned white.
The order with the highest amount of melanin is black>brown>red>blonde>gray hair. The size of the granules is also black on the larger side, and if it is less, it becomes red and brown. These melanin granules are melanoside pigment-forming cells that exist near the mother cells of the father and are oxidized and polymerized according to tyrosine oxidase in tyrosine, a type of amino acid, to form melanin granules.
18. The characteristics and management of hair according to age \n \n1) The health of teenage \n \n \n is the best time of life. The sebaceous glands are so strong that it is easy to smell hair. Neutral or oily hair Regular conditioning with daily shampoo and mild conditioning is essential \n \n2) 20s \n \n \n It is a time when hair health deteriorates due to excessive perm and dyeing. various periods of psychological stress. Brushing for 5 minutes before going to sleep to remove contaminants from the scalp. \n \n3) It is the time when the scalp dries up in earnest as the sebum in the 30s \n \n decreases. It is recommended to use shampoo and rinse that have moisturizing effects. Frequent brushing is essential. Use hair treatment products, clean once a month \n \n4) 40s \n \n \n \n It is a time when the hair and moisture are significantly reduced. Gray hair grows longer and hair grows slower. Hair that feels dry or chemically treated, such as dyeing and bleaching, must be conditioned. Brushing for about 3 minutes is required every night. \n \n \n2008/10/16 20:28 2008/10/16 20:28 \nPosted by Sopphaus, Director of Research.
The contents of this post are based on the user's personal experience and public general information, and are not intended to advertise, promote, or encourage the use of certain medicines. Please consult a medical professional for the use of prescription drugs and treatment.
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