2. Dormancy period-After the shedding growth period is over, it will enter a dormancy period that lasts only about 3 weeks. At this stage, the cell division speed of hair will slow down, and the hair root will gradually shrink to about 65,438+0/3 of the original value until the hair leaves the hair root and gradually moves to the upper skin of the scalp.
3. Rest period-hair is old and easy to fall off. Finally, the hair will slowly enter the stage of aging and shedding, and its hair roots will completely shrink and become thinner, and gradually fall off from the surrounding tissues, or it may be squeezed out by new hair. This stage lasts about 3 to 4 months. During this period, if the hair is pulled by any external force, it is easy to fall off immediately. After the dormant hair falls off, it will enter the growth period in a few months and grow new hair.
Myth about losing 100 hairs every day As can be seen from the above, the growth cycle of hair consists of three continuous stages: growth period, rest period and rest period (shedding period). If there is enough hair on the head, about 85% of the hair should be in the growth period at any time, and the rest period is about 14%. Once the proportion is out of balance, the speed of hair loss is faster than the speed of hair regeneration.
I believe everyone has heard the saying: "It is normal to lose 100 hairs every day". In fact, what matters is not how many hairs are lost, but whether the lost hair will grow back. If your hair grows back, it doesn't matter if you lose more than 100 hairs a day, but if your hair doesn't grow back, you will have a problem if you lose 30 hairs a day.
10 Causes of female hair loss Women often suffer from temporary and semi-temporary hair loss due to factors such as childbirth, menstruation, abnormal thyroid function or dieting. With the development of the times, women bear more social responsibilities and more and more pressure, which also causes the growth of male hormones. Therefore, in recent years, there are more and more signs of hereditary alopecia in women.
Most people think that menopausal older women have hair loss problems. In fact, in the actual outpatient experience, many young women have hair loss problems, and there are more and more trends. About 10 points are attributed to all causes of female hair loss:
1. About 50% of women with postpartum hair loss will have postpartum hair loss, and each child's situation is different. Maybe the first child lost his hair and the second child didn't. But basically the problem of postpartum alopecia is temporary alopecia, but there are also a few parturients who will not grow back because of other factors. According to research, hair loss reflects the state of the body three months ago, and it is also absolutely related to whether the body is nutritious enough. Therefore, postpartum hair loss usually occurs three months after giving birth to a child, but if breastfeeding, the later hair loss may be delayed, because breastfeeding will increase the concentration of female hormones in mommy. In addition, hair loss usually occurs in the whole head area, and postpartum hair loss will be concentrated on the forehead and upper ears.
Is it normal to lose a few hairs after delivery?
Many postpartum mothers may worry, how many hairs are lost every day is the normal range? Usually about 3 to 6 months after delivery, about 50% of mothers will have postpartum hair loss, and the number may reach as many as 300 a day, but this is actually within the normal range. Generally, the hair will grow back gradually from about 6 months after delivery, and the prenatal hair density will be restored in about 12 months. If other hair loss factors have been ruled out, hair loss caused by simple delivery can be recovered by itself without treatment. Mommy just needs to relax and wait patiently.
2. Abnormal thyroid function The first symptom of abnormal thyroid function is hair loss, which may cause a large area of hair loss. Whether too much or too little thyroid hormone will affect the metabolism of the body and the normal growth of hair.
3. Women with insufficient ferritin content will lose iron with menstrual blood, which will also lead to hair loss, but this phenomenon can be improved as long as nutrition is strengthened.
4. Dieting to lose weight If women reduce their food intake in order to maintain a good figure, it may lead to reduced scalp blood flow and out of shape, which is also one of the reasons for young women's hair loss.
Further reading: relieve postpartum pain and headache, and be careful of subdural hematoma.
5. There are androgens in women with stress syndrome, but modern women often have to face the pressure from work and family. Stress can lead to the secretion of male hormones. If there is too much androgen, it will lead to hair loss.
6. Polycystic Ovary Syndrome According to the survey, about 65,438+00% to 65,438+02% of young women in Britain have the problem of polycystic ovary syndrome. Polycystic ovary syndrome will lead to excessive androgen in the body, skin degeneration and hairy appearance, but hair will fall off, especially on the forehead and top of the head, and hair follicles will become smaller and smaller, leading to thinning hair and eventually hair follicles will atrophy and necrosis.
7. Genetic problems Hair thinning is actually far more serious than hair loss, because it represents a problem caused by genes. It is generally believed that male baldness is a genetic phenomenon, while female alopecia is usually temporary or semi-temporary, but women actually have familial alopecia, even young women aged 16 have alopecia problems.
8. Taking medicine leads to hair loss. Some young women will take oral contraceptives, but some ingredients of oral contraceptives may harm their hair. In addition, the phenomenon of hair loss after taking medicine will vary from person to person because of different constitutions.
9. Chemotherapy of cancer It is generally known that chemotherapy of cancer will produce * * *. Usually hair will fall off after 4 ~ 6 weeks of chemotherapy, but this is only a temporary phenomenon. Hair will grow back after 3 to 6 months of treatment.
10. Here comes Menopause. Due to the slow secretion of female hormones in menopause, hair thinning and hair loss may occur, and the stress caused by emotional ups and downs in menopause may also lead to hair loss.
How to judge whether hair loss needs medical treatment?
Although there are 10 reasons for female hair loss, it is not always possible to self-detect what causes it in the case of suspected hair loss. Therefore, it is suggested that if alopecia persists for more than 1 year and does not improve, it is best to check with a doctor to confirm whether there are other diseases that may lead to alopecia. As for hair loss, which clinic should I hang? Because most hair problems are closely related to the skin, whether it is alopecia, baldness or various intractable diseases related to the scalp, you should seek the examination, diagnosis and treatment of dermatologists before making an evaluation.
Prevention &; Prevention is better than cure. Usually pay more attention to the following five points. In addition to improving mothers' postpartum hair loss as soon as possible, ordinary women can also effectively prevent hair loss:
1. Take more protein and vitamins. When the body is unwell, most of the nutrients obtained from the diet will be supplied to the body and finally to the hair. Therefore, if the nutrition intake is insufficient, the hair will be hurt first. Therefore, how to supplement enough nutrition at the moment of hair loss and protect hair follicles from atrophy will be an important key to scalp maintenance.
Because 80% of hair is made up of protein, protein is the most important source of nutrition for hair growth. Mothers must eat normally and supplement foods rich in protein, such as fish, meat, milk and eggs, which will be of great help to hair care. In addition, nutrients such as vitamin A, vitamin B, vitamin H, zinc and important fatty acids also contribute to hair growth, making hair firm and not easy to break and fall off.
2. Don't lose weight quickly after delivery. Some mothers may want to lose weight immediately after delivery, and then suddenly eat little or only vegetables and fruits, resulting in protein and starch deficiency, which may make hair look worse or grow more slowly. When women are dieting to lose weight, they should also pay special attention to whether protein is not eating enough. Otherwise, it will take more time to remedy hair loss after 3 months.
Because protein's function to human body is not to supply energy, but to repair energy, if he deliberately goes on a diet to lose weight, does not eat starchy food, or the nutrient intake deviation caused by fasting, partial eclipse and vegetarian diet, and the nutrient loss caused by excessive cooking and eating harmful substances, the hair follicle will not grow smoothly and produce a * * * shape.