GM potatoes damaged rats

1. Rats were fed potatoes engineered to produce their own insecticide.
   
   
2. They developed potentially precancerous cell growth in the digestive tract, inhibited development of their brains, livers and testicles, partial atrophy of the liver, enlarged pancreases and intestines and immune system damage.
   
   
3. The cause was not the insecticide, but in all likelihood was the process of genetic engineering.
   
   
4. GM foods on the market—which were created with the same process—have not been subject to such an extensive testing protocol.