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 is this difference growing over time? We only have partial evidence and the evidence is not strong enough to make an absolute conclusion. We know that biological, behavioral and environmental factors all play a role in the fact that women have longer life spans than men, however, we aren't sure how strong the relative contribution 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 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.

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 have a longer life span than men? Why has this advantage gotten larger in the past? There isn't much evidence and we're left with only some solutions. We know that biological, behavioral and environmental factors contribute to the fact that women are healthier than men; however, we do not know how significant the impact of each one 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's the main reason women live longer than men? And how does this benefit increase as time passes? There is only limited evidence and the evidence isn't strong enough to make a definitive conclusion.