By Emily Banks Leader-Telegram staff
Lab rats refused to eat genetically modified tomatoes, and squirrels in the wild will choose organic corn over genetically modified crops. Smith calls that phenomenon the "wisdom of animals." The process of genetically engineering potatoes made lab rats sick in one UK study, causing excessive cell growth, and animals have become sterile or even died after eating genetically modified crops, said Smith.
GMOs might be harmful to humans for many reasons. What scientists intended to change in an organism may not turn out how they expected, Smith said. The protein might be different than they intended, or it might rearrange once it's in the crop and generations later might mutate into something else.
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