According to some researchers women have a survival advantage over men in critical, life-threatening conditions, such as wars, famines and social collapse:
“Women in almost all modern populations live longer than men. Research to date provides evidence for both biological and social factors influencing this gender gap. Conditions when both men and women experience extremely high levels of mortality risk are unexplored sources of information. We investigate the survival of both sexes in seven populations under extreme conditions from famines, epidemics, and slavery. Women survived better than men: in all populations, they had lower mortality across almost all ages, and, with the exception of one slave population, they lived longer on average than men.
