Having many sons may shorten women's lives after their last birth more than having daughters, according to new research. MORE FROM LIVE SCIENCE: 5 Myths About Women's Bodies Extending Life: 7 Ways to Live Past 100 Crowded Planet: 7 (Billion) Population Milestones The findings, which came from a group of Finnish women born mostly before industrialization, are correlational, so they can't prove sons actually cause shorter lives for their moms relative to daughters. And because the effect varies across the world, social factors, rather than intrinsic...
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