This quote from Chris Kresser about GMO foods, really hit home for me-
“It’s unnerving that there is so much controversy over the safety of a food product that is present in 60 to 70 percent of processed foods found in grocery stores.”
Personally, my take away is, it’s worth avoiding the top GMO ingredients, listed above (corn, soy and cotton). You can easily do this by looking for organic options for those particular foods and relying on less processed foods. Check you ingredients and do what you can, to reduce your exposure.