A recent study has found dangerous amounts of glyphosate in granola bars and popular oat cereals.

The study was conducted by the Environmental Working Group.

The group found the chemical in all but five of 29 oat-based foods.

Some of the cereals include Cheerios Toasted Whole Grain Oat Cereal and Kellogg’s Cracklin’ Oat Bran oat cereal.

Glyphosate is the main ingredient in weed killer and has been linked to cancer.