It's in large part social. > The gap in life expectancy between men and women narrowed with increased income levels. In the bottom 1% of the income distributio

It's in large part social. > The gap in life expectancy between men and women narrowed with increased income levels. In the bottom 1% of the income distribution, women lived 6.0 years (95% CI, 5.9–6.2 years) longer than men; in the top 1% of the income distribution, women lived only 1.5 years (95% CI, 1.3–1.8 years) longer than men. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4866586/# https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4866586/# Men face strong gender roles that drive them to do things that lower life expectancy. Working longer hours in tougher jobs, taking more risks, stress-reducing substances. There's likely some biological component (most animals also show a life expectancy gap), but with appropriate resources and social prioritization we would be able to bring men up to spitting distance of women.