This is the cause of Faster Old Men

Research shows, men were more rapid aging than women. This is because the body's immune system in men age faster. As a result, his body is more easily exposed to the disease than women. This resulted in women the opportunity to live longer than men.
"Age-related changes in the immune system in a variety of women and men. These findings indicate, immune parameters were decreased more slowly in women causes it to live longer, "said research leader Professor Hirokawa Katsuiku of Tokyo Medical and Dental University who published research in the journal Immunity and Ageing.
Hirokawa conduct a study to analyze blood tests from 356 healthy volunteers aged between 20 to 90 years. Researchers counted the number of white blood cells and molecules of cytokines, signaling the body's immune system.

In both sexes the white blood cell count decreased over time. The mean decline is seen in lymphocytes called T-cells which B-cells. More rapid decline in the number of both male than female participants. Same thing happened to cytokines IL-6 and IL-10, which resulted in a man's immune system is weaker.
Of cytokines IL-10 not only serves as a defense when the wound, but also regulate the immune system in order to continue to be controlled. Uncontrolled immune system can cause disease of the heart, arterial blood vessels, and cause dementia (dementia).
Two active immune system against the presence of foreign objects CD4 T-cells and natural killer (NK) cells increase over time. In men, higher pertambahannya. NK cells are the body's first line of defense against cancer.
"The aging process is different in men and women. Women have more estrogen which protects them from cardiovascular until menopause. Sex hormones also affect the body's defenses, especially some types of lymphocytes, "Hirokawa said.