Currently, food companies in the U.S. are not required to label foods as containing GMOs. In the U.S. most corn and soybeans are produced using GMOs so any products with corn or soybeans and it has been said that that canola oil, cottonseed oil and sugar beets also often are genetically modified. You can look for the “non-GMO project verified” label, so read your labels and/or just buy organic.
Yes, I agree that GMO’s should DEFINITELY be avoided if at all possible! There’s some great videos on YouTube about the effects of GMO’s on health and the lack of long term evidence of their effects. Many countries have banned the use of GMO’s, and the USA should too!