Lab Tests Show Children are Eating Contaminated Breakfast Cereals Containing Cancer-causing GlyphosatePopular oat cereals, oatmeal, granola and snack bars come with a hefty dose of the weed-killing poison in Monsanto’s Roundup, according to independent laboratory tests commissioned by EWG. These new findings come days after a California jury awarded $289 million to a school groundskeeper who claimed Roundup gave him lymphoma. EWG’s tests found glyphosate, the active ingredient in Roundup, in all but two of 45 samples of products made with conventionally grown oats. More than two thirds of the samples had glyphosate levels above what EWG scientists consider protective of children’s health with an adequate margin of safety. About one-third of 16 samples of foods made with organically grown oats also had glyphosate, all at levels well below EWG’s health benchmark. Glyphosate may get in organic oats by drifting from nearby farm fields, or cross-contamination in a processing facility that also handles non-organic foods. Glyphosate has been linked to cancer by California state scientists and the World Health Organization. The California case that ended Friday was the first of reportedly thousands of lawsuits against Monsanto. These suits have been brought by farm workers and others who allege that they developed cancer from years of exposure to Roundup.