- GM crops may provide more nutrients, vitamins, and reduced saturated fats than traditional varieties.
- Crops can be resistant to disease and insects, potentially cutting farming costs on insect/herbicides.
- Crops can be engineered to have a longer shelf life.
- Some believe GM crops may help fight world hunger.
- GM crops are already ingested in high quantities in the U.S. with no health concerns to show for it, and testing of new GM crops is very thorough (based on many sources I've seen).
- Some studies show crop yields are not increased.
- There is the potential of "super weeds" and "super insect" evolution.
- Not all the effects may be possibly known, and the corporations pushing GM crops are profit-driven, leading some to believe they are overstated benefits and overlooking risks.
- Further travel down the road of monoculture. Currently 15 species of crops account for 90% of world energy consumption (PBS.org). A diversity of crops may be considered natural and provides insurance against drought and disease.
- These crops may hurt small farmers, as they will become reliant on seeds from corporations producing GM crop. They may also hurt foreign farming if modification allows more tropical crops to be grown in more temperate climates.
- The EU and some other nations will not consume GM crops exported by other nations, so adopting them domestically could hurt U.S. export numbers.