Examine individual changes

Everywhere in the world women live longer than men - but this was not always the case. The available data from rich countries shows that women didn't live longer than men in the 19th century. What is the reason women live longer than men? Why the advantage has grown over time? We only have a few clues and the evidence isn't sufficient to support an absolute conclusion. Although we know that there are biological, behavioral as well as environmental factors which play a significant role in women who live longer than males, we aren't sure how much each factor contributes.<br><br>It is known that women live longer than males, regardless of weight. However it is not due to the fact that certain [https://hararonline.com/?s=biological biological] or [https://glorynote.com/%D8%A3%D8%B6%D9%8A%D9%82-%D9%88%D8%B6%D8%B9%D9%8A%D8%A9-%D9%84%D9%84%D8%AC%D9%85%D8%A7%D8%B9/ اضيق وضعية للجماع] non-biological factors have changed. These variables are evolving. Some are well known and relatively straightforward, like the fact that men smoke more often. Others are more complex. For example, there is evidence that in rich countries the female advantage increased in part because infectious diseases used to affect women disproportionately a century ago, so advances in medicine that reduced the long-term health burden from infectious diseases, especially for survivors, ended up raising women's longevity disproportionately.<br><br>Everywhere in the world women tend to live longer than men<br>The first chart below shows life expectancy at birth for men and women. We can see that all countries are over the line of parity diagonally. This means that a newborn girl in all countries can be expected to live for longer than her brother.<br><br>This chart is interesting in that it shows that although the female advantage exists across all countries, the difference between countries is huge. In Russia women are 10 years older than men, while in Bhutan the gap is less than half each year.<br><br>__S.17__<br>__S.19__<br>In rich countries the advantage of women in longevity used to be smaller<br>Let's now look at how the female advantage in terms of longevity has changed over time. The next chart shows male and female life expectancies at birth in the US from 1790 to 2014. Two points stand out.<br><br>First, there is an upward trend. Women and men in America have longer lives than they were 100 years ago. This is in line with historical increases in life expectancy everywhere in the world.<br><br>The second is that there is an increase in the gap between men and women: female advantage in terms of life expectancy used to be quite small however, it has increased significantly during the last century.<br><br>You can verify that these principles are also applicable to other countries that have information by clicking on the "Change country" option on the chart. This includes the UK, France, and Sweden.