a 2009 French Study concluded the key ingredient in GMO soy can kill the cells in the outer layer of the human placenta
Fertility issues in males were also observed when a study on male rabbits found a decrease in sexual activity and sperm concentration and an increase in dead or abnormal sperm when they were fed GM soy.
After consuming GMOs, your intestines basically turn into a breeding ground for pesticides (heres a video explaining further). GMO soy and corn actually produce pesticides inside themselves. The plant becomes toxic inside so insects wont eat it.