"Aris A. Leblanc" - S. Maternal and fetal exposure to pesticides associated to genetically modified foods in Eastern Townships of Quebec, Canada. Reproductive Toxicology. 2011; 31(4).
October 17, 2011 The following is a rebuttal by a highly qualified scientist of a critique by biologist Marcel Kuntz of a 2011 study which found Bt toxin circulating in the blood of pregnant women and in the blood supply to their foetuses:
Kuntz's critique of Aris and Leblanc's study was re-published by David Tribe on the Biofortified website:
http://www.biofortified.org/2011/04/nonsense/
In the exchange below, Marcel Kuntz's comments are indicated by the initials MK and the scientist's comments are indicated by the initials SC.
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Scientist's rebut of Kuntz critique of Aris and Leblanc's study on Bt toxin in human blood
MK: A publication lacking credibility
Only claims of Aris and Leblanc on Cry1Ab are discussed here for the time being.
The Cry1Ab protein is produced by some Bt cotton and corn (e.g. MON810). Aris and Leblanc claim they detected this protein in 93% of pregnant women and 69% of non-pregnant women tested and believe that this is linked to the consumption of foods derived from Bt varieties, which in Canada must mean corn rather than cottonseed oil.
Surprisingly, the authors do not consider that the origin of Cry1Ab could be food from organic farming (which sprays Cry1Ab, or bacteria producing it, on fruit or vegetable crops) or from its use in gardening (CryA1b is part of available "natural insecticide" formulations).
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