(WOMENSHEALTHMAG) — This weekend, thousands of people will descend on Buffalo, New York, for the annual National Buffalo Wing Festival. The main draw at the two-day event? A series of wing-eating contests.

But recently, People for the Ethical Treatment of Animals (PETA) asked that pregnant women be banned from the chicken wing-eating competitions, claiming that research links chicken consumption by expecting women to alarming health risks for their unborn babies: namely, smaller penis size in boys and blocked arteries at birth in both sexes.

“Findings published by the Study for Future Families showed that eating poultry during pregnancy may lead to smaller penis size in male infants,” says Lindsay Rajt, PETA’s associate director of campaigns, in her letter to Drew Cerza, founder of the National Buffalo Wing Festival. “In addition, eating cholesterol-laden chicken flesh during pregnancy may also increase unborn babies’ risk of being born with blocked arteries, which can lead to strokes and heart attacks later in life.”

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