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. Why do women live so longer than men in the present and how is this difference growing over time? There is only limited evidence and the evidence is not sufficient to reach a definitive conclusion. We know there are biological, behavioral and environmental variables which all play a part in the longevity of women over males, we aren't sure what percentage each factor plays in.<br><br>It is known that women live longer than males, regardless of weight. However this isn't because of certain non-biological aspects have changed. What are these changing factors? Some are well known and relatively straightforward, like the fact that men smoke more often. Certain are more complicated. 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 [https://www.wikipedia.org/wiki/diagonal diagonal] line of parity. This implies that a baby girl in every country can anticipate to live longer than her older brother.<br><br>This chart is interesting in that it shows that the advantage of women exists in all countries, cross-country differences are large. In Russia women live 10 years more than males. In Bhutan the difference is less that half a year.<br><br>__S.17__<br>__S.19__<br>In rich countries the advantage of women in longevity was smaller<br>Let's examine how the female longevity advantage has changed over time. The next chart compares male and female life expectancy when they were born in the US between 1790 and 2014. Two aspects stand [https://glorynote.com/%D8%A7%D9%88%D8%B6%D8%A7%D8%B9-%D8%A7%D9%84%D9%88%D9%82%D9%88%D9%81/ كيفية إقامة علاقة بالصور] out.<br><br>The first is that there is an upward trend: Men as well as women in the US are living much, much longer than they did a century ago. This is in line with historical increases in life expectancy everywhere in the world.<br><br>There is an increase in the gap between men and women: female advantage in terms of life expectancy used to be very modest however, it has increased significantly over the last century.<br><br>Using the option 'Change country by country' in the chart, you can confirm that the two points are also applicable to the other countries having available information: Sweden, France and the UK.