It is an accepted fact of life that men enjoy certain physical advantages over women. Men are stronger, taller, faster and less likely to be overweight, but they have then tendency to die before their female counterparts. Their date rate is higher than women in many different societies. Women, as a group, live longer than men. In all developed countries and most undeveloped ones, women outlive men, sometimes by a margin of as much as 10 years. In the U.S., life expectancy at birth is about 79 years for women and about 72 years for men. The gender discrepancy is most pronounced in the very old: among centenarians worldwide, women outnumber men nine to one. The gender gap has widened in this century as gains in female life expectancy have exceeded those for males. The death rates for women are lower than those for men at all ages--even before birth. Although boys start life with some numerical leverage about 115 males are conceived for every 100 females. Their numbers are preferentially whittled down thereafter. Just 104 boys are born for every 100 girls because of the disproportionate rate of spontaneous abortions, stillbirths and miscarriages of male fetuses. More boys than girls die in infancy. And during each subsequent year of life, mortality rates for males exceed those for females, so that by age 25 women are in the majority. The reason women live longer than men can be explained from a biological, psychological and social view point. There are physiological, psychological and social factors that can account for longevity of women. The reason women live longer than men is because they have better cardiovascular endurance, they have two x chromosomes which further delays aging, men are more engaged in risky behaviors that can cause death, and another reason is that men are more likely to die from depression women.
Women have an advantage over men in terns of cardiovascular endurance; disease such a heart attack and