The American Academy of Environmental Medicine has warned that the public should avoid genetically modified (GM) foods, stating, "There is more than a casual association between GM foods and adverse health effects. There is causation."
A large number of studies and incidents have implicated GM foods in a wide variety of health problems, including accelerated aging, immune dysfunction, insulin disorders, organ damage and reproductive disruption.
For example, female rats fed a diet of GM soy experienced a drastically higher infant death rate, and their surviving infants were smaller and less fertile than the offspring of rats fed on a non-GM soy diet. Male rats fed the GM soy had their testicles change from pink to blue, and the GM soy was also observed to damage the DNA of sperm and embryos. Fertility problems such as abortion, infertility, premature delivery, prolapsed uteri, infant death, and even delivery of unformed infants (bags of water) have been observed in farm animals fed GM cottonseed and corn.
Animals consuming crops that have been genetically modified to produce the pesticide Bt (approved for human consumption in the United States) have died by the thousands, while animals grazing on a non-GM version of the same crops remained unharmed. Upon autopsies, researchers have found black patches in the animals' livers and intestines, internal bleeding and other signs of Bt poisoning. Farm workers in India have begun developing allergic reactions upon handling Bt corn, similar to the effects experienced by people exposed to Bt spraying.
In addition to these risks, GM soy and corn contain significantly higher concentrations of allergens than unmodified varieties. Evidence also suggests that the genetic abnormalities of GM foods may transfer to bacteria in the human gut, thereby exposing people to their detrimental effects long after a food has been consumed.
Yet in spite of all this evidence and the prevalence of GM crops in the U.S. food supply not a single clinical trial of any GM crop has ever been published.
"The experiments simply haven't been done and we now have become the guinea pigs," said Canadian geneticist David Suzuki. "Anyone that says, 'Oh, we know that this is perfectly safe,' I say is either unbelievably stupid or deliberately lying."