A number of popular breakfast foods, including cereals, granola bars and instant oats, were tested and found to contain potentially dangerous amounts of cancer-linked glyphosate, the main ingredient in weed killer.
The Environmental Working Group (EWG), an environmental advocacy organization that conducted the study, said Wednesday that glyphosate was found in all but five of 29 oat-based foods that were tested.
Glyphosate is the active ingredient in Monsanto's Roundup, the most heavily used pesticide in the United States. Every year, according to the EWG, more than 250 million pounds of glyphosate is sprayed on American crops.