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 have a longer life span than men? And why the advantage has grown as time passes? We have only a small amount of evidence and the evidence is not sufficient to reach 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 main reason women live longer than men? Why the advantage has grown in the past? The evidence isn't conclusive and we're left with only some 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 is the reason women have a longer life span than men? What is the reason the advantage has grown over time? We only have partial evidence and the evidence is not 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. What is the reason women live longer than men? And why does this benefit increase over time? There isn't much evidence and we have only partial solutions.

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 makes women live more than men do today, and why is this difference growing in the past? The evidence is limited and we're only able to provide incomplete solutions. We know that behavioral, biological and environmental factors all contribute to the fact that women live longer than men; however, we do not know how significant the impact of each of these factors 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 is the reason women are more likely to live longer than men? What is the reason the advantage has grown as time passes? We have only a small amount of evidence and the evidence is not 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. What is the reason women live much longer than men today, and why does this benefit increase in the past? We only have a few clues and the evidence isn't sufficient to support an unambiguous conclusion. While we are aware that there are biological, behavioral and environmental factors which all play a part in the longevity of women over men, we do not know the extent to which each factor plays a role.