DDT Linked to Fourfold Increase in Breast Cancer Risk

By Lindsey Konkel, National Geographic PUBLISHED June 16, 2015

Some environmental scientists have long suspected, based on lab studies, that prenatal exposure to DDT—which can mimic estrogen and might turn key genes on and off—could fundamentally alter the way a woman's breast tissue grows, making her more susceptible to breast cancer decades later.

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Arty turns 10 this summer.