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 have a longer life span than men? What is the reason is this difference growing over time? We only have partial evidence and the evidence isn't strong enough to make an informed 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 longer than men, and why has this advantage increased in the past? We have only a small amount of evidence and the evidence isn't strong enough to make an unambiguous 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. 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 reason why women are more likely to live longer than men? And why is this difference growing as time passes? We have only a small amount of evidence and the evidence is not strong enough to make a definitive 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. What is the reason women live much longer than men today and why have these advantages gotten bigger over time? We only have partial evidence and the evidence isn't sufficient to draw an unambiguous 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 longer than men in the present, and why does this benefit increase in the past? We have only a small amount of evidence and the evidence is not sufficient to draw an informed 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. What's the reason women are more likely to live longer than men? What is the reason is this difference growing over time? There is only limited evidence and the evidence isn't sufficient to reach an unambiguous conclusion.