The male average life span is shorter than women

The male average life span is shorter than women
With the development of society, the improvement of the living standard, but men and women's life-span disparity rises day by day, even the phenomenon of negative growth of the male life-span has appeared in some countries. It shows to count according to World Health Organization and investigation for many years of the United Nations population organization, it is watched that the total trend comes, men and women's average life span is increasing, but women's increasing degree should be obviously greater than men. At present, male average life span is short 5- 10 years than women, and in some countries, this kind of difference still rises year by year.


In China, will it be the seventies last century, man than less 1 year such as life-span such as women, it arrives to be two year less in the eighties, after entering the 21st century, disparity has been pulled to 5 years. In Britain, the life-span disparity among men and women, has already increased by 7 years old by 2005 from 5 years old in 1985. Short-lived 7 years too than women for American man.

At the beginning of 2007, Japan announced the newest statistical data of the national people's life-span. The result reveals, Japan's male average life span is 78.56 years old, but women are 85.52 years old. This statistics indicate, the average life span of Japanese women has already reached the first in the world at the same time, men stand in fourth in world.

The situation of Russia is very troubling. In March of this year, a national life-span report reveals, Russia's male average life span is shortening constantly. In 1987, the male average life span was 64 years old, but shorten to 58 years old now. From 1991, Russia's male mortality rose by 1.6 times. And corresponding to it, it is Russian women's average life span that is increasing constantly, already been close to 70 years old at present.

Men have short-lived and many reasons

In view of this, the scientists of various countries attempt to find man's reason more short-lived than women. And end in Sri Lankan except Clutton - Brock the tile draw the spouse and compete for the theory, and more interesting explanations.

John of Britain Liverpool the intersection of More and the intersection of university and cell and molecule the intersection of kinematics and large to defend Ge professor Pinker say once now, women are longe-lived because women's organ function is old and feeble slower, it is apter to keep young. "We find, in the male heart is from 18 to 70 years old, its vigor decays 20% - 25% . 70 years old later, it is young 3/ 4 that the heart is reduced to the ability of the blood supply of whole body at most. On the contrary, but women of the same age do not have such weak situation. " Meanwhile, women's brain atrophy is slower than that of men. This is proud to like observing the question women with facial features even more, is expressed with the language after the brain thinks. This helps to stimulate the brain, keep vigor.

But it is a short-lived reason that the scientist of Sweden thinks men bellicose. An investigation discovery of Sweden, 70% of the traffic accidents are caused by male drivers. 2006, the intersection of Russia and 20- 50 year old adult man of age bracket, because traffic accident figure of death 75% higher than women of age bracket this, than 4 times higher the above in the country of European Union. This is all that grand sex hormone in the male body is doing mischief.

Also the view thinks, the genetic advantage causes women's life-span advantage. Speaking from the science of heredity, the gender chromosome that women inherited is X X, men are X Y. What is a kind of participation mended DNA in the human body gene, relate to X chromosome, so women mend the gene innately. In addition, some enzyme genes which regulate the human cellular metabolism make a reservation on X chromosome too, it can accelerate the renewal of cells, keeps the vigor of the human body. In this respect, men are in inferior position too. According to hormone that men and women secreted, men have male more sex hormone, and female there is less hormone. In fact, female hormone helps to improve immunity of the human body, therefore women resist infection and the ability against virus should be better than man. Meanwhile, female hormone is favorable to cholesterol, lipoprotein supersession too, therefore women's arteriosclerosis and cerebrovascular morbidity of heart are far lower than men. Accordingly, the mortality caused by this is low too. In addition the intersection of women and period, the intersection of person who pregnant with and nurse and physiological phenomenon, love characteristic of crying etc., also make it more long-lived than men.
Men Average Life-span Women
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