Hair is called "blood residue" in Chinese medicine. As the saying goes, "Long hair is strong, but long armor is weak." In other words, people with good physical strength and sufficient qi and blood have moist, dark and fast hair, while those with insufficient qi and blood and poor physique have yellow heads and slow nails. It seems that black and white hair is related to people's life span.
However, in real life, there are many old people with golden hair. Some acquaintances turn white in middle age, and now they are still alive in their 100 s. Even some people have more white hair than black hair when they are young, but they have excellent health and strong labor force. Now people in their seventies work harder than young people. There is even a family whose father and son are already white-haired. They are called "white-haired families", but their life span is not short. There are also people whose parents rarely have white hair, but most of their brothers and sisters don't have white hair, and some of them have white hair very early. This is our family. When my parents died in their eighties, their hair was not very white. Now my brother is over ninety, my sister is eighty-six and my sister is seventy-four. Their hair is rarely white, but I turned white long ago.
This shows that white hair has nothing to do with longevity, but is related to heredity, living habits and diet.
I don't think white hair is directly related to longevity. Although Chinese medicine says that white hair is a sign of deficiency of kidney qi, from the situation of people around me, I don't think there is a necessary connection. Take my father for example. He is 88 years old. I remember that his hair was gray when he was young, but his energy was much stronger than those health experts who were younger than him on TV. I always say that he speaks more confidently than I do. There are many such examples around me.
White hair has something to do with longevity. Hair must be gray early, one is malnutrition, and the other is excessive energy output, which also involves physical fitness. Unless it is regenerated, it cannot be replenished. Haven't you heard the old saying, herding sheep when you are young, eating vegetables when you grow up, and selling lamp grass when you are old, you will live long if you don't live long. Now, I go to school as a child, become a soldier when I grow up, and travel when I am old. As long as you don't eat or drink, you have good physical fitness and you have to live long if you don't live long, so the average age is higher now than before.
This question is amazing.
When I was in high school, my hair turned white. Up to now, my hair is almost all white. But his wife's hair is still black, and she can hardly find white hair. Some people suspect that it is dyed, and there are very few people who are close to 70. My mother-in-law is still alive. She is 100 years old, and her hair has only turned white in recent years. Maybe it's genetic.
My grandson is only fourteen years old, one meter seventy-five, more than one hundred and fifty kilograms, and has a few white hairs on his head, which is not as good as his grandmother's hair.
Some people say it's pigment deficiency. I really don't understand medicine, so I can't explain it.
In my opinion, hair can't be related to people's life span. Why is my mother-in-law 100 normal, but her wife was diagnosed with coronary heart disease and cerebral infarction twice in 1997? If you didn't pay attention to medical care, you would have died long ago. Obviously, it has something to do with heredity, but nothing is absolute. It must have something to do with living habits, quality of life and congenital.
There are not a few people with white hair. Being old is also a symbol of being old. There are only a few old people with black hair, which is rare.
In real life, many people have white hair, and it is normal for those who are older. After all, this is a normal physiological phenomenon, but many teenagers also have white hair.
Although white hair will not have any effect on life expectancy in the short term, it will make people look lifeless, and even some friends will think that having white hair will affect life expectancy. In order to let everyone know more about white hair, I will share some related knowledge.
I don't know if you have noticed that China people's hair is black, mainly because of its high melanin content. Hair turns white, indicating that the melanin in it has decreased or even disappeared. The synthesis process of melanin in human body is complicated, which is produced by tyrosine under the action of tyrosinase. To synthesize melanin, melanocytes, tyrosinase and nutrients (such as copper, iron and zinc) are needed. ). As long as any one of them has problems, the synthesis of melanin in hair will decrease.
From ancient times to the present, there are many famous sayings about white hair. Everyone is familiar with them, including San thousands of feet's white hair and the first kind of sadness. In fact, these famous sayings have given us some answers. For example, when sadness turns white, the relationship between white hair and emotion is vividly written. When something went wrong in the past, some media reported that Liu had lost a lot of hair overnight.
In fact, there is scientific evidence that mental factors will increase the incidence of gray hair. Tyrosine in human body can be converted not only into melanin, but also into adrenaline, norepinephrine, dopamine and other substances. When people have mental stress, they will remind the human body to synthesize more adrenaline and norepinephrine to improve the stress ability of the human body. It should be noted here that the content of tyrosine in human body is limited. If you are in a state of great mental stress for a long time, you will secrete more adrenaline and norepinephrine. These two hormones are synthesized more, and the amount of tyrosine used to synthesize melanin will be greatly reduced, so the reduction of melanin synthesis in hair will cause white hair.
Some friends may wonder, since the amount of tyrosine is limited, why is more tyrosine converted into adrenaline and norepinephrine? In fact, this is a self-protection mechanism of the human body. When people are in a state of shock, fear, strong stimulation and other stress, the human body will secrete these stress hormones to ensure that people can successfully tide over the difficulties and avoid the collapse of the human body.
The synthesis of melanin requires melanocytes, nutrients, tyrosinase and so on. As long as the above factors are affected, it may cause white hair. For example, smoking and drinking will affect the absorption of nutrition, and dieting and partial eclipse will cause the lack of nutrition, which will naturally make hair white. Some people have white hair because of some diseases, such as hypertension, diabetes, anemia, hyperthyroidism, etc. Some drugs will also affect the activity of tyrosinase. Some people live in an environment with strong ultraviolet rays, and too strong ultraviolet rays can also damage melanocytes.
Chinese medicine believes that white hair is mainly caused by kidney is not good, deficiency of kidney qi and deficiency of both qi and blood, which is somewhat mysterious. In fact, this statement is similar to the sub-health state of western medicine.
In fact, there is no necessary relationship between white hair and life expectancy, mainly because of specific reasons. In recent years, I have seen five-year-old children with white hair, which may be partial eclipse or malnutrition. In this case, it is obvious that the impact on life is very small.
There are still some people who have white hair because of some genetic diseases, such as polychromatic disease and albinism. In this case, the impact of white hair on life is certainly not small, but there is no quantitative standard for the specific impact on life.
But on the whole, I personally think that white hair has nothing to do with life expectancy. White hair is only a symptom of a certain disease or problem, and it should be analyzed in combination with the reasons.
This is related to family inheritance. My home is mainly on my mother's side. My mother and menstruation have no white hair in their 70 s, and they rarely have white hair in their 80 s. We three brothers and sisters completely inherited this advantage of my mother's family. I am 57 years old and have no white hair. I never go to a barber shop. I am born without white hair and natural curly hair, saving a lot of haircut expenses every year. My classmates, colleagues and friends of the same age all envy me. My two younger brothers don't have white hair, and my menstrual cousins don't have white hair, which shows that my mother's family has genetic genes. My father has little white hair, but my father's relatives have white hair. But we didn't inherit this gene from my father's family.
It doesn't matter. People over 90, 100 are all white-haired. Look at those old birthday girls, they are not handsome at all! People with white hair hardly have cancer. I don't know why, it is being studied in medicine and will benefit mankind in the future!
White hair has nothing to do with longevity, but is related to heredity.
My grandmother has silver hair. She gave birth to nine children in her life, and even never gave birth to a child. Her children never served her when she died at the age of 85.
White hair has juvenile white and old white. There are more and more people with white hair in modern society, and they are getting younger and younger. White hair is caused by the destruction of melanocytes in hair follicles for various reasons, which leads to the decline of function. Personally, I think white hair has nothing to do with life expectancy!
It probably doesn't matter! As long as I can remember, my father has white hair and lived to be in his nineties. When my mother died, she had very little white hair and lived to be in her nineties. This is a living example around me.