What does it mean that men shave frequently? What does it have to do with longevity? use research to tell you
What factors are related to human life expectancy? Many people believe that the length of lifespan is affected by life and eating habits; but some people also suggest that the lifespan of men is related to the habit of shaving. Some medical research has found that compared with men, women tend to live longer, and among the long-lived elderly, women account for a higher proportion, which may be due to the fact that women do not have beards.
Is the life expectancy of men related to shaving? Men often shave their beards in life, what does it show? Let's find out together.
1. About Beard
Why do men grow beards?
When the male hormone in the male body reaches a certain level, a beard will grow. From puberty onwards, the male testicles will continuously secrete a large amount of androgen, and the adrenal cortex in the male body will also secrete male hormones.
The continuous secretion of androgen in the body will accelerate the development of the secondary characteristics of the male body, so men will grow hand hair, foot hair and beard, which is a normal physiological phenomenon of the human body.
Men have more body hair than women. The higher the level of androgen secretion in a man's body, the faster the beard will grow.
As the body ages, the normal function of the male testicles also decreases, and the level of androgen secretion in the body decreases . Therefore, after men enter a certain age, the growth of beard will be relatively sparse. This is a normal phenomenon and no treatment is required.
What does a beard do?
Beards are one of the manifestations of male secondary characteristics. When the body is stimulated by male hormones, beards will grow. A beard may not seem like it does much for physical health, but it protects a man's face from harm.
Usually, beards can resist changes in seasons and weather, protect men's skin from ultraviolet rays, and prevent dark spots on the skin due to sun exposure; and men's long beards can also reduce the probability of suffering from skin diseases.
2. According to the shape of the beard, it may be possible to judge the health status of the body
1. Beard grows too fast
If the level of androgen secretion in the male body is high, the beard will grow too fast . For healthy men with normal endocrine, the beard will grow about 0.4mm every day. If a man finds that his beard grows too fast, he just shaved it off the day before, and it grows back quickly the next day, and it is dense and black, with the new length Far more than 0.4mm, indicating that the level of androgen secretion in the body is too high.
Whether too much or too little androgen is secreted, it is not conducive to health. The human body needs to maintain a balanced and normal secretion level. If the androgen secretion level in the male body is too high, the teenagers will have premature puberty, and the human body hair will grow too fast, and the body hair will be very thick. If there is too much male hormone secretion in the body, it will also cause excessive oil secretion in the body and block the pores. If these situations occur, corresponding adjustments are required.
2. Beard color change
As the body ages, it is normal for the beard to turn gray, but it is not normal for a man to have abnormally gray beard when he is young. If the beard of a man is black, it means that the body has sufficient nutrition, which can provide enough nutrients for the growth of the beard, and the body is in good health.
If the beard turns white abnormally, it may be caused by physical damage. At this time, you need to pay attention to your physical health and judge whether it is due to the damage of the digestive system, which causes the body to absorb nutrients poorly, or due to physical fitness. Decreased, premature aging symptoms caused by weak constitution.
There are also some men whose beards are red or yellow , which is caused by the lack of nutrients in the body. If the beard is abnormally red, the body may lack trace elements; if the beard turns yellow, it means that the body may lack copper or have symptoms of anemia.
3. Sparse beard
The density of beard growth can reflect the health status of the human body. Whether the beard is too sparse or too dense, it is unhealthy. As men get older, their beards will become thinner, but they rarely fall off on their own.
Many men feel thankful when they find that their beards are thinning or falling out, so that they don't have to shave as often, but this view is actually wrong. When this happens, it means that we should pay more attention to the conditioning and maintenance of the body. When the level of pituitary hormone secretion in the human body decreases, the secretion of androgen in the body will decrease accordingly, so the beard will become sparse and fall off.
If the level of androgen secretion in a man's body is low, the secondary characteristics of men will be weakened, which will seriously affect the health of the body and lead to a decrease in body function. Therefore, when such phenomena occur, the body should be adjusted in time.
4. The texture of the beard is hard
The strength of male fertility can be judged by the hardness of male beard. Adolescent males tend to have soft and thin beards, but as they age, the beards gradually become thicker and harder.
After many men become fathers, their children will obviously feel that the father's beard is very hard. When this happens, it means that the men have high physical fitness and good physiological functions. On the contrary, if the beard is thin and soft, it means that the physiological function is poor.
3. What does it mean that men shave frequently? What does it have to do with longevity? use research to tell you
Reasons why men shave frequently
The growth rate of male beard is related to the level of androgen secretion in the body. The amount of hormone secretion will affect the growth of beard. When the level of androgen secretion in the male body is high, this group tends to grow the beard faster.
The speed of beard growth is also affected by staying up late . Staying up late will increase the sensitivity of skin hair follicles to androgen, causing the body to grow beards rapidly, and the speed of beard growth is also related to the frequency of shaving and shaving. When you shave normally, it will stimulate the skin hair follicles and accelerate the growth of beard.
In addition, affected by factors such as genetic factors and racial differences, the growth speed of beards is also different. For example: many foreign men usually have longer beards.
What is the relationship between beard growth and life expectancy?
The study found that people who didn't shave every day were less likely to die than those who shaved regularly, accounting for about 31 percent of all casualties. People who do not have the habit of shaving have a mortality rate as high as 45%. Therefore, it can be seen that people who do not shave every day have a higher risk of death.
In this regard, a university in the UK conducted a related experiment, taking 2,438 middle-aged men from England and Wales as a sample, and adopted a follow-up survey method. It was found that middle-aged men who did not have the habit of shaving every day had a higher prevalence rate . Compared with middle-aged men who shave every day, the mortality rate of this group was about 14% higher.
However, other studies have found that most of the people who do not have the habit of shaving every day are unmarried blue-collar workers. These groups have poor physical fitness, short stature, and are prone to angina pectoris. Therefore, whether there is a direct or indirect correlation between the habit of shaving and the length of life, has not yet been fully confirmed.