How Abortion Foes Got It Wrong | David A. Grimes

February 25, 2015 10:32 PM

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The theory that abortion increases a woman's risk of breast cancer was debunked long ago. Why then does the claim still appear from bumper stickers to Crisis Pregnancy Centers to the Internet? Some zealots claim that, "The single most avoidable risk factor for breast cancer is... elective abortion." Indeed, one abortion foe alleges an international conspiracy of silence.

How early studies got it wrong Because of poor methods, early studies reached the wrong conclusion. When researchers study diseases that take long to develop, they routinely use a follow-back design called "case-control." Researchers gather a group of persons with the disease in question (cases) and...

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