Understanding Life Expectancy

It is the desire of all humans to live long on earth and fulfil their purpose for existence. Many have desired to live up to 80, 90, 100 and some even wish to live longer. While this desire to live long is a legitimate one, it often happens that people die when they least wished or expected. Historically, women live longer than men and this trend may continue for centuries and perhaps longer. Even with the sizable risk conferred by childbirth, women lived longer than men in 1900, and it appears that women have out survived men at least since the 1500s, when the first reliable mortality data were kept. Sweden was the first country to collect data on death rates nationally; in that country's earliest records, between 1751 and 1790, the average life expectancy at birth was 36.6 years for women and 33.7 years for men. Death rates in less developed countries, whose citizens have limited access to cars, guns and maternal care, also provide a measure of mortality before modernity.