The reason why women live longer than men is because because the immune system of these ages more slowly.
To the extent that the body’s defenses weaken over time, the increased susceptibility of men to cut sick life, a study of Japanese scientists, published in the journal Immunity & Ageing.
The immune system protects the body from infections and cancer, but causes disease when not well regulated. The Japanese study aimed to clarify the controversial question of whether age-related changes in the body’s defenses may be responsible for the differences in average life expectancy between men and women.
After analyzing blood samples from 350 healthy men and women aged between 20 and 90 years, found differences between men and women in two key components of the immune system: T-lymphocytes, which protect the body from infection, and B-lymphocytes which secrete antibodies. These are two specific types of white blood cells, whose decline was faster in men, who also showed a more rapid decline associated with age.
The researchers concluded that the results indicate that the rate of decrease in these parameters is slower immunological in women than in men, which is consistent with the fact that women live longer. “