Read the main article. Although the FDA does not conduct safety testing on genetically engineered foods, research is ongoing throughout the world, and not always free of controversy. The following is a brief overview:
–Food-safety researcher Dr. Arpad Pusztai reported in 1998 that rats fed genetically engineered potatoes at a British lab developed immune system deficiencies and stunted growth. After announcing his findings, Pusztai was suspended by the lab at which he worked. Other independent researchers supported his conclusions.