Trump blaming fall in Iowa poll on GMO corn?
© Greg Nash

Republican presidential front-runner Donald TrumpDonald TrumpGuardian Angels founder Curtis Sliwa wins GOP primary in NYC mayor's race Garland dismisses broad review of politicization of DOJ under Trump Schumer vows next steps after 'ridiculous,' 'awful' GOP election bill filibuster MORE on Thursday reposted a tweet from a follower blaming his fall in a new Iowa poll on genetically modified corn that “creates issues in the brain.”

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A poll released by Quinnipiac University early Thursday shows Trump trailing retired neurosurgeon Ben CarsonBen CarsonGovernment indoctrination, whether 'critical' or 'patriotic,' is wrong Noem takes pledge to restore 'patriotic education' in schools Watchdog blames Puerto Rico hurricane relief delays on Trump-era bureaucracy MORE by 8 points among likely caucus-goers.

The tweet references Monsanto, a company that pioneered the use of genetically modified organisms (GMO) in farming. GMO farming produces larger crops and saves resources, but critics say food that has been genetically engineered is not safe for consumption.

The St. Louis-based company has become the poster child for opponents of GMOs, spurring a “March Against Monsanto” movement.

Concerned groups have launched unsuccessful state ballot initiatives that would require foods that contain GMOs to be labeled.

The Food and Drug Administration, however, has said food made with GMOs is safe.