Why don't men live longer than women? It's related to chromosomes. I studied biology at school. The male chromosome is XY and the female chromosome is XX. Women have two XX chromosomes, which means that each gene has a backup, one chromosome is faulty and the other is working normally. However, the X chromosome and Y chromosome of men are different. Any chromosome problem will lead to changes in the body, and it is easy for the body to get sick. It has been found that the immunomodulatory gene is located on the X chromosome, and there is a gene on the X chromosome that promotes DNA repair. Because women have two X chromosomes, they can stay healthy.

The cause of bleeding is female menstrual period, not physiological stimulation. When the old blood is discharged, new blood will be produced, which can accelerate the whole body blood circulation and improve the basal metabolic rate, but it can also maintain hematopoietic function and reduce the risk of cancer. In addition, having menstruation can enhance women's tolerance and enhance women's viability. The study found that compared with women, men died earlier than women without eating or drinking and losing a lot of blood. Pregnancy, childbirth and breastfeeding are also beneficial to women's health and reduce the risk of illness.

Hormonal reasons, some scientists believe that male testosterone is one of the main reasons for short life expectancy. Testosterone does make young men stronger, but it makes older men more susceptible to high blood pressure, heart disease and cancer. Testosterone stimulates semen production and increases the risk of prostate cancer in elderly men. This is because of the androgen in the body, so men are too grumpy and brave. Women avoid the stimulation of androgen and testosterone, and the main hormone is estrogen. Estrogen is an antioxidant, which can eliminate free radicals and harmful substances in the body. Estrogen can also protect the blood vessel wall, prevent the blood vessel wall from becoming hard or brittle, and reduce the risk of cardiovascular diseases in women. On the other hand, men react strongly to adrenaline and vasoconstrictors and are prone to cardiovascular diseases.

Due to metabolic reasons, the basal metabolic rate (BMS) of men is much higher than that of women, usually consuming 6270 kilojoules of energy every day, while that of women is 48 13 kilojoules. Men's large spending power will increase the loss of the organization itself, leading to short life expectancy of men. Personality reasons, compared with men, women love to cry and are good at venting, which can effectively relieve psychological pressure and bad emotions. Studies have shown that people's negative emotions after crying can be reduced by about 40%, which can comfort themselves and improve their emotions. In addition, tears can also accelerate cell metabolism and help remove toxic substances from the body. But men are different, they will swallow all the pain in their stomachs, and boredom and sadness will be hidden in their hearts, which will hurt their health over time, thus affecting their life span.