Do not ignore
http://www.ornl.gov/sci/techresources/Human_G...

Controversies

1 Safety
Potential human health impacts, including allergens, transfer of antibiotic resistance markers, unknown effects
Potential environmental impacts, including: unintended transfer of transgenes through cross-pollination, unknown effects on other organisms (e.g., soil microbes), and loss of flora and fauna biodiversity
2 Access and Intellectual Property
Domination of world food production by a few companies
Increasing dependence on industrialized nations by developing countries
Biopiracy, or foreign exploitation of natural resources
3 Ethics
Violation of natural organisms' intrinsic values
Tampering with nature by mixing genes among species
Objections to consuming animal genes in plants and vice versa
Stress for animal
4 Labeling
Not mandatory in some countries (e.g., United States)
Mixing GM crops with non-GM products confounds labeling attempts
5 Society
New advances may be skewed to interests of rich countries