A mouse test indicated that people eating GM peas could develop allergies both to the peas and to a range of other foods. The peas had already passed all the allergy tests normally used to get GMOs on the market. It took this advanced mouse test, which was never used on the GMOs we eat, to discover that the peas could be deadly.
Rats fed GM potatoes had smaller, partially atrophied livers.
The New Genes Stay With You:
Unlike safety evaluations for drugs, there are no human clinical trials of GM foods. The only published human feeding experiment verified that genetic material inserted into GM soy transfers into the DNA of intestinal bacteria and continues to function. This means that long after we stop eating GM foods, we may still have their GM proteins produced continuously inside us.