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's the reason women live longer than men? And how the advantage has grown as time passes? We only have partial evidence and the evidence isn't sufficient to draw an unambiguous conclusion. We are aware that behavioral, biological and environmental factors contribute to the fact that women have longer lives than men, however, we aren't sure how significant the impact of each factor is.

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's the main reason women have a longer life span than men? Why has this advantage gotten larger in the past? The evidence isn't conclusive and we're only able to provide limited answers.

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's the reason women are more likely to live longer than men? Why does this benefit increase over time? We have only a small amount of evidence and the evidence isn't strong enough to make an absolute conclusion.

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 much longer than men today and why does this benefit increase over time? We have only a small amount of evidence and the evidence is not sufficient to reach an informed conclusion. Although we know that there are behavioral, biological, and environmental factors that all play a role in women living longer than men, we don't know the extent to which each factor plays a role.