Digestive inflammation and irritation attends these GMOs (1) which the body doesn't even recognize as normal. They tend to be designed to accommodate more pesticides and other agricultural chemicals rather than replace them(1) - so we get exposed to more residual stuff that doesn't just keep away the unwanted organisms from the fields.
While I personally try to avoid rice by when by itself and soy protein, GMOs especially impact populations whose dominant staples are the very foods that have been genetically modified, and so they get the biggest doses of GMOs if those varieties are prevalent. Taiwan, which does consume a lot of soy, has banned GMOs in school lunches - they recognized by about a year ago that an extra 15 US cents up-front per kid per lunch saves some dough on health issues(2).
Sources:
1. Passero, Dr. Kevin. "Is Paying Extra for Organic Really Worth It?" Live in the Now, Nutranext Direct, LLC, http://www.liveinthenow.com/article/is-paying-extra-for-organic-really-worth-it
2. Z., Isabelle. "Taiwan has banned GMOs in school lunches; when will America protect its children and do the same?" prevention.news, Prevention News, 17 January 2017, http://www.prevention.news/2017-01-17-taiwan-banned-gmos-in-school-lunches-when-will-america.html