The Main Sources of GMOs
In the U.S., three major commodity crops are raised predominantly from GMO seed: field corn (92%*), soybeans (94%*), and cotton (98%*). 
Almost 95% of Canadian grown Canola is genetically engineered for herbicide resistance. 
U.S. sugar beet production is estimated to be over 95% genetically modified for herbicide resistance. 
GMO sweet corn, papaya, zucchini, and yellow summer squash are also for sale in grocery stores, but in far lesser amounts. Genetically modified alfalfa is grown for use as hay and forage for animals.
Currently, the GMO potato is being marketed under the Simplot Innate brand, found under the trademark White Russet. It was introduced to grocery stores in 2015. In late 2018, the scientist who developed the GMO potato renounced his work calling the potatoes a health risk.
Genetically engineered non-browning ‘Arctic’ apples have been deregulated by the USDA and have been on the market since 2016.
Seedless watermelons, tomatoes and pluots are NOT genetically modified.
Other Sources of GMOs:
- Dairy products from cows injected with the GM hormone rbGH
- Food additives, enzymes, flavorings, and processing agents, including the sweetener aspartame (NutraSweet) and rennet used to make hard cheeses
- Meat, eggs, and dairy products from animals that have eaten GM feed
- Honey and bee pollen that may have GM sources of pollen
- Contamination or pollination caused by GM seeds or pollen
Some of the Ingredients That May Be Genetically Modified:
- Vegetable oil
- Vegetable fat
- Margarines (made with soy, corn, cottonseed, and/or canola)
Ingredients derived from soybeans:
|Soy flour||Textured vegetable protein||Soy protein|
|Soy isoflavones||Tempeh||Soy lecithin|
|Soy protein supplements||Vegetable proteins|
Ingredients derived from corn:
|Corn flour||Corn mesa||Corn starch|
|Corn gluten||Corn syrup/high-fructose corn syrup||Cornmeal|
Processed foods often have hidden GM sources (unless they are organic or declared non-GMO). Follow the link for a complete list of Invisible Ingredients.
Some of the Foods That May Contain GM Ingredients:
|Infant formula||Ice cream||Pasta||Malt|
|Salad dressing||Frozen yogurt||White vinegar||Hot dogs|
|Bread||Veggie burgers||Baking powder||Enriched flour|
|Cereal||Chips||Protein powder||Peanut butter|
|Margarine||Fried food||Tomato sauce||Hamburgers|
|Meat substitutes||Tamari & soy sauce||Vanilla (may contain corn syrup||Any sugar not 100% cane|
The Best Way to Avoid GMOs
For health and environmental reasons, IRT strongly recommends you buy organic food.
USDA organic standards do not allow the intentional use of GMOs, Roundup or other synthetic toxic chemicals. We have advocated for many years that manufacturers label products as non-GMO. But this is not enough if you are looking to avoid Roundup as well.
To find out more, check out our GMO v Organic page.
- Recent Trends in GE Adoption. Retrieved from: https://www.ers.usda.gov/data-products/adoption-of-genetically-engineered-crops-in-the-us/recent-trends-in-ge-adoption.aspx
- (2018) Genetically Modified (GM) Crops in Canada – Statistics & Facts. Retrieved from: https://www.statista.com/topics/3013/genetically-modified-gm-crops-in-canada/
- The Adoption of Genetically Engineered Alfalfa, Canola, and Sugarbeets in the United States. Retrieved from: https://www.ers.usda.gov/webdocs/publications/81176/eib-163_summary.pdf?v=0