The cold cereals we eat undergo a process called extrusion. An extruder is an industrial machine that produces little flakes, O’s and other shapes and puffed grains using high temperatures and pressures. As you will read in these studies, rats that ate the cardboard boxes and another group that ate nothing lived longer than the rats that ate the extruded cereals. Even worse, the whole grain cereals may be even worse for us than the typical supermarket brands.
http://editor.nourishedmagazine.com.au/articles/puffed-grains-should-we-eat-them
Here is too much information, but a really great overview of cereals, described by the EPA. What bothered me also was the toxic emissions (volatile organic compound, air, particulate matter) involed in the production of cereal.
http://www.epa.gov/ttn/chief/ap42/ch09/final/c9s09-2.pdf
I would love to hear your comments on this because I’m finding the information I’m finding disturbing.