This controversial theory points out that in daily life, women's bodies are better at daily maintenance than men's, keeping cells self-repair and vitality.
Genes determine life span
The stronger the cell repair ability, the longer the life span.
Tom Kirkwood, a professor at Newcastle University in England, recently put forward a new theory, revealing the reasons why women live longer.
Professor Kirkwood believes that more and more evidence shows that men are more like "disposable goods" than women, and their body cells are inherently less durable than women.
Many scientists believe that the length of life is determined by the number of subtle mistakes in the body, and how much self-repair ability we have determines the number of these subtle mistakes.
This means that the stronger the repair ability, the less subtle mistakes in the body and the longer the life span. And those who always fail to repair cells in time, the body will gradually age until death.
Differences in life expectancy between men and women
Men with less cell repair time are therefore "short-lived"
According to the report, the bodies of female ancestors are healthier and more durable than those of men, and they will also make more efforts to repair body cells. "For humans and most animals, women play a very important role in reproduction." Professor Kirkwood said that the fetus needs to be conceived in the mother's womb, and the baby needs the mother's breast-feeding, so it takes more time to repair the cells.
Men, on the other hand, don't need to spend too much energy on cell repair.
At the same time, men spend more energy on their work than women, which also explains why their life expectancy is short.
Researchers at the University of Michigan in the United States released a survey report on men's life expectancy, saying that men are far from being as strong as we thought. Due to various pressures, men's life expectancy is still shortening, and men's health is being threatened as never before. ?
The latest survey does not give the difference in life expectancy between men and women, only that the death rate of young men is three times higher than that of women. According to the survey statistics of the World Health Organization and the United Nations Population Organization for many years, the average life expectancy of men is 5 to 10 years shorter than that of women, and this difference is increasing year by year in some countries. ?
For example, in China, the life expectancy of men was less than that of women 1 year in the 1970s, 2 years less in the 1980s, 4 years less in the 1990s and 5 years less in the 20th century. In the United States, general statistics show that men live seven years less than women, while in Russia, men live seven years less than women 10 years. ?
Why do men live shorter than women? ?
Why do men live shorter than women? This is a constant topic and fact since human evolution. ? There is a saying in a jingle: Men don't cry lightly, men don't like to talk, men don't go to see when they are sick, and men don't want to go back when they have a home. In fact, these summaries are far from enough, because the factors that lead men to live shorter than women also include other men's personality, physiological characteristics, social pressure and so on. For example, men have high basal metabolism, love to be brave, poor lifestyle, aggressive, adventurous, angry and addicted to alcohol. ?
1. Eating too much will lead to short life?
There are some physiological differences between men and women, among which the basal metabolism of men is 5%-7% higher than that of women, that is, the energy consumption is higher than that of women. As early as the 1930s, Clyde, a nutritionist at Cornell University in the United States? Myka did an experiment with mice. A group of mice were not given enough food, but only the nutrients necessary for their survival. On the other hand, give another group of mice enough food to eat freely and eat as much as possible. The results showed that the bone growth of rats in the free diet group stopped after 175 days, while the bone growth of rats in the restricted diet group continued slowly after 500 days. The average life span of mice in free eating group is only 2.5 years, while that in restricted eating group is 3-4 years. Researchers believe that the harmful free radicals produced after eating less are correspondingly reduced, and the damage to human DNA and cells is also reduced, so aging will also slow down. This may explain why men who eat more always live shorter lives than women who eat less. ?
2. Will you lose your life if you don't protect yourself from the sun?
Compared with women, men's lifestyle is neither scientific nor healthy. For example, men like to smoke and drink, and cigarettes and drinking have become the most vicious killers of human life and health in modern society, and the harm to men is far greater than that to women. The life expectancy of Russian men is much lower than that of women, and vodka plays an important role. In addition, men's eating habits are often voracious or overeating, so the incidence of gastric diseases in men is 6.2 times higher than that in women on average. In addition, men usually eat more fat and protein food than women. Studies have shown that eating too much fat and protein is an important cause of rectal cancer. At the same time, a considerable number of men do not pay attention to sun protection and skin cancer examination, so the probability of men dying of melanoma is twice that of women. ?
3. Men are too aggressive?
Androgen in men's blood is an important reason for irritability and aggression. In the war years, many men went to the battlefield, which naturally makes it easy to understand why men are so short-lived, because the war took a large number of men's lives. However, in peacetime, men's aggressive personality is also an important reason for their sudden death, so their life expectancy is shorter than that of women. For example, men are twice as likely to die in a car accident as women because of being competitive and drunk driving. ?
A survey in Sweden shows that 70% of the casualties on expressways are caused by male drivers, and 60% of traffic accidents in cities are caused by male drivers. Statistics of traffic accidents in Spain show that the proportion of male and female drivers in traffic accidents is 60% to 40%. Statistics from other European Union countries and the United States show that the traffic accident rate of male drivers is higher, about 70%, while female drivers only account for about 30%. ?
The reason is that androgens in men are at work, which often stimulates men's bravado, and at the same time, their psychology is also satisfied: you see, my driving skills are superb, and the other person is simply a melon, with poor skills, and I have to occupy the road. The result of this is often overtaking and colliding with the normal driving vehicle in front, resulting in the destruction of the car and the death of people. In this respect, women are just the opposite, and it is almost impossible to have an accident. The direct victim of a car accident is the driver, so there are far more short-lived men than women. ?
4. Does menstruation exercise a woman's endurance?
Compared with men, women love to cry, and if men cry often, they will be considered weak, unmanly and weak, so men dare not cry, which has a great impact on health and longevity. Tears can not only relieve stress and emotions, but also help to expel toxic substances from tears. Of course, the result of men's tears is the deterioration of their bodies, which will also have a negative impact over time. ?
In addition, women's special physiological phenomena also determine their high tolerance and strong viability. For example, women's menstrual period has exercised their endurance, especially their ability to survive in disasters. In the case of not eating or drinking as much as losing blood, men may die a few days or even earlier than women, and women are more likely to persist until rescuers arrive, thus successfully surviving from the disaster. ?
5. Attitude determines life span?
The biggest reason why men don't want to go back to their hometown is that society requires men to stand tall. In order to succeed and support the family, men must work and pay too much, asking men to put up a facade at work or at home. Therefore, men are more nervous than women at work and bear more pressure than women. Therefore, the hospitalization rate of male patients with myocardial infarction is 7- 10 times that of female patients. ?
Finally, men's attitudes towards health and body affect their life span. A survey in the United States shows that 82% of men regularly maintain their cars, but only 50% of men have regular physical examinations. This has caused men to be unaware of minor illnesses, moderate minor illnesses, and sudden death from serious illnesses. If men can find their own physical abnormalities in time and diagnose and treat them in time, then the morbidity and mortality can be greatly reduced. ?
Although it is an indisputable fact that men live shorter than women, as long as men today follow the four principles of healthy living, they may live longer, even longer than women. These four principles are: reasonable diet, moderate exercise, quitting smoking and drinking, and psychological balance.
Why don't men live longer than women?
This is because women have physiological advantages over men: they can withstand stress better than men, and they are also better than men in long-term endurance. Research shows that women's diseases are often chronic diseases-such diseases reduce people's quality of life, but can maintain life. Men, on the other hand, always get some fatal sudden diseases, such as heart disease.
According to Marvin, who has been engaged in animal life research for the San Diego Zoo before retirement? Jones said that it is extremely common for women to live longer. Females in the animal kingdom-whether mice, chimpanzees or elephants-also live longer than males of the same kind. All the old animals in the zoo are females.
Men's vulnerability has been shown before birth. Boys' chromosomes are X plus Y and girls' chromosomes are X plus X. An extra X chromosome of a girl can not only be used as a backup when an X chromosome is defective, but also play a dual role in regulating the immune system. During the fourth to sixth month of pregnancy, the Y chromosome begins the process of sex differentiation and secretes the male hormone testosterone. This sex hormone may have a harmful effect on men's immune system, thus reducing the body's ability to resist various infectious diseases. Testosterone also has bad effects on the heart and cholesterol.
In contrast, female estrogen can improve the function of the immune system and protect the heart, bones, brain and blood vessels.