A Second X Chromosome Could Explain Why Women Live Longer Than Men

D-brief
By Megan Schmidt
Dec 18, 2018 3:00 AMJan 9, 2020 8:26 PM
elderly couple smiles
Researchers say that women may be born with an advantage when it comes to longevity. (Credit: Pressmaster/Shutterstock.com)

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Women have an average life expectancy that’s about 4 years longer than men’s – regardless of culture or geography. Even among animal species, females outlive males.

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