The average life expectancy of women is years greater than that of men in every country in the world.
In more developed countries, the average life expectancy at birth is 79 years for women, and 72 years for men. In less developed countries, where high maternal mortality reduces the difference in longevity, women can expect to live an average of 66 years, compared with 63 years for men.
What explains this persistent difference? Part of the answer is behavioral. Men are more likely to smoke than women and are also more likely to take risks, making them more susceptible to life-threatening injuries.
Also, scientists believe that estrogen in women combats conditions such as heart disease by helping reduce circulatory levels of harmful cholesterol. Women are also thought to have stronger immune systems than men.
However, there are hilarious images that illustrate why women live longer than men.