According to the new research that showed that women do not just live longer than men in normal conditions, but they are also more probable to survive even in the bad of circumstances such as famine and diseases. Women’s increased life expectancy is because they tend to have a survival benefit in childhood rather than adulthood. In times of difficulty, newborn girls are more likely to survive than newborn boys.

However, even when mortality was very high for both sexes, women still lived longer than men by six months to almost four years on average. This benefit in women may be largely due to biological factors such as genetics or hormones, especially estrogens, which enhances the body’s immune defenses against infectious disease, the researchers explained.

“Our results add another piece to the puzzle of gender differences in survival,” stated researchers led by Virginia Zarulli, Assistant Professor at the Duke University in Durham, US. In the study, published in the journal Proceedings of the National Academy of Sciences, the team analyzed mortality data going back roughly 250 years for people whose lives were cut short by famine, disease or other misfortunes. 

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