Birth defect spike blamed on pesticides

March 31, 2009 Researchers say higher concentrations of pesticides and agrochemicals found in the environment between April and July of last year. That discovery coincided with significantly higher birth defect rates for mothers conceiving during those same months.

Scientists at Indiana University's School of Medicine analyzed all 31 million births in the U.S. between 1996 and 2002 for the study. They say it's the first study to definitively connect birth defects and seasonal pesticides present at the time of conception.

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