Scientists confirm what women always knew: men really are the weaker sex

Although it has been known for a long time that women's life expectancy is generally higher than men, the analysis of the history of 250 years, for example, through Swedish famine and various measles, women in the slave farms in Trinidad I will live longer than men. Eruptions in Iceland

According to the report by Duke University, North Carolina (pdf), despite the very high male and female death rates, the average life expectancy of women is still longer by 6 to 4 years than the average life expectancy of men.

These datasets include seven groups of people with an average life expectancy of 1 to 2 people with a gender of 20 or younger. These included Trinidad in the early nineteenth century and workers and former slaves in the United States, people suffering from famine in Sweden, Ireland, Ukraine in the 18th, 19th and 20th centuries, affected by measles epidemics in 1846 and 1882 Icelandic people and Icelandic people are included. Man

Virginia Zarulli, Senior Researcher at the South Denmark University Public Health Institute, says that the sex difference of life expectancy is due to biological factors such as heredity and hormones.

For example, girls born during the famine of Ukraine in 1935 lived to 10.85 years old, but boys were on average 3 years old or younger.

Girls of the 19th century also performed well in West Africa. An American slave who moved to Liberia between 1820 and 1843 experienced the highest mortality rate ever and 43% of people died within the first year after arrival. The average life expectancy of boys is low at 68 years old and girls are 23 years old.

"It is surprising to find such an important and consistent women's advantage among all people," Zarully said. "What is even more surprising is that, during these crises, the majority of the sex difference of life expectancy is determined by the difference in infant's survival time, which is the most interesting result."

Zarulli pointed out that women have dual X chromosomes and hormonal estrogens, regardless of factors such as violence or danger.

"To put it briefly, if a bad mutation occurs in the X chromosome, the woman has an X that can partially or fully compensate it, but the man is not."

Zaruli says that estrogen, the most famous female hormone, protects blood vessels and protects from various diseases. "In addition to reckless behavior, the most famous androgen hormone testosterone raises the risk of some fatal diseases that more typical men increase the risk of accidental and violent death."

Scientists make sure that men are weaker. The new study concludes that male sex is certainly weak - because females lived longer than men in the past 250 years of famine, epidemics and difficult times. Yes, uh - I would like to have various types of strengths and weaknesses. According to my research, I came to the conclusion that women are actually weak in their gender. Of course, this conclusion is based on "Arm Wrestling Study". Nine years later, he lost his hand in a fireworks accident, a European surgeon recovered contact with fake hands by surgery and it was the first time that sensory feedback passed through the prosthesis. What I can say is that it is so impressed right now - when this person gives a finger to someone - he can really feel it

Bridid ​​Schulte: Throughout history, most male scientists, including Charles Darwin, have done research or wrote that women are wiser and weaker than men. If the woman is not a scientist it is probably due to not being hospitalized in the university and it may not be a natural biological requirement. What is this science? Does it allow you to start entering deeper into gender? Angela Saini: I almost came to it by chance. When I brought my son back to work, the London Observer asked me to write a story about menopausal disorder. I came from engineering background, and I always write a difficult physical science story. I tend not to do biology. The approach I took was to find out why menopause was explained in evolutionary biology. To shock me is that different people have different theories and they may sometimes be separated by gender.