A 2011 Canadian study found the insecticidal protein from GMO corn in the blood of 93% of pregnant women and 80% of their fetuses.
The discovery that the protein crossed the placental barrier contradicted industry assurances that it would be destroyed during digestion.
Despite the significant public health implications, regulatory authorities dismissed the findings and no major follow-up studies were initiated.
The protein, Cry1Ab, is produced internally by widely consumed genetically engineered corn, found in countless food products.
The episode highlights a critical gap in long-term safety research and regulatory oversight for genetically modified foods.
In 2011, a team of researchers at the Université de Sherbrooke Hospital in Montréal, Canada, published a study that presented a finding with profound implications for food safety. Analyzing blood samples from pregnant women and the umbilical cords of their fetuses, they detected traces of an insecticidal protein commonly associated with genetically modified corn. The results, published in the journal Reproductive Toxicology, indicated that 93% of the pregnant women and 80% of the fetuses had the protein, known as Cry1Ab, in their circulatory systems. This discovery suggested that a substance engineered into food crops had not only survived human digestion but had also crossed the selective placental barrier. Instead of triggering urgent follow-up research and public health reviews, the study faded into obscurity, raising enduring questions about the rigor of post-market safety surveillance for genetically modified organisms.
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