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 are more likely to live longer than men? What is the reason is this difference growing as time passes? There is only limited evidence and the evidence is not strong enough to make an unambiguous conclusion. While we are aware that there are biological, behavioral and environmental variables which play a significant role in women who live longer than males, it isn't clear how much each factor contributes.

We are aware that women live longer than men, regardless of weight. However it is not because of certain biological factors have changed. What are these changing factors? Some are well known and relatively straightforward, Www.anunciosentuciudad.es/author/carynspoffo/ - www.smartmedicalproducts.com - like the fact that men smoke more often. Other 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.

Everywhere in the world women tend to live longer than men
The first chart below shows life expectancy at birth for men and women. As we can see, every country is above the diagonal parity line ; this means in all countries a newborn girl can expect to live longer than a newborn boy.1

This graph shows that while there is a female advantage throughout the world, the differences between countries could be significant. In Russia, women live for 10 years longer than males. In Bhutan, the difference is less than half a calendar year.

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The advantage for women in terms of life expectancy was lower in developed countries that it is today.
Let's look at how the advantage of women in terms of longevity has changed over time. The following chart shows the male and female lifespans at birth in the US between 1790 and 2014. Two points stand out.

First, there's an upward trend. Men and women in the US have a much longer life span longer than they did a century ago. This is in line with historical increases in life expectancy everywhere in the world.

The gap is increasing: While the female advantage in life expectancy was once extremely small however, it has grown significantly over time.

If you select the option "Change country' on the chart, you will be able to confirm that the two points are also applicable to other countries with available data: Sweden, France and the UK.