First of all, I'm not a geneticist, or any sort of biologist - nor an expert in physiology, biochemistry, etc. But I believe that genetically modified foods and food ingredients should be indicated on food packaging and food bins in markets (as has been required in some European countries, so I've read). That gives people choice. Plus, I wouldn't choose to grow from genetically modified seeds in my own garden. But that's just me.
Maybe this can help in your search. There's an organization called the American Academy for Environmental Medicine. I know next to nothing about them, but they've published a "position paper" on GM foods. It can be found here:
http://www.aaemonline.org/gmopost.html
The paper is brief and includes end notes showing the references and studies they've cited. These are the references:
B
ibliography: Genetically Modified Foods Position Paper AAEM
1. World Health Organization. (Internet).(2002). Foods derived from modern technology: 20 questions on genetically modified foods. Available from:
http://www.who.int/foodsafety/publications/biotech/20questions/en/index.php
2. Smith, JM. Genetic Roulette. Fairfield: Yes Books.2007. p.10
3. Freese W, Schubert D. Safety testing and regulation of genetically engineered foods. Biotechnology and Genetic Engineering Reviews. Nov 2004. 21.
4. Society of Toxicology. The safety of genetically modified foods produced through biotechnology. Toxicol. Sci. 2003; 71:2-8.
5. Hill, AB. The environment and disease: association or causation? Proceeding of the Royal Society of Medicine 1965; 58:295-300.
6. Finamore A, Roselli M, Britti S, et al. Intestinal and peripheral immune response to MON 810 maize ingestion in weaning and old mice. J Agric. Food Chem. 2008; 56(23):11533-11539.
7. Malatesta M, Boraldi F, Annovi G, et al. A long-term study on female mice fed on a genetically modified soybean:effects on liver ageing. Histochem Cell Biol. 2008; 130:967-977.
8. Velimirov A, Binter C, Zentek J. Biological effects of transgenic maize NK603xMON810 fed in long term reproduction studies in mice. Report-Federal Ministry of Health, Family and Youth. 2008.
9. Ewen S, Pustzai A. Effects of diets containing genetically modified potatoes expressing Galanthus nivalis lectin on rat small intestine.Lancet. 354:1353-1354.
10. Kilic A, Aday M. A three generational study with genetically modified Bt corn in rats: biochemical and histopathological investigation. Food Chem. Toxicol. 2008; 46(3):1164-1170.
11. Kroghsbo S, Madsen C, Poulsen M, et al. Immunotoxicological studies of genetically modified rice expression PHA-E lectin or Bt toxin in Wistar rats. Toxicology. 2008; 245:24-34.
12. Gurain-Sherman,D. 2009. Failure to yield: evaluating the performance of genetically engineered crops. Cambridge (MA): Union of Concerned Scientists.
13. Lofstedt R. The precautionary principle: risk, regulation and politics. Merton College, Oxford. 2002.