Witchy Woman

"In a study released by the International Journal of Biological Sciences, analyzing the effects of genetically modified foods on mammalian health, researchers found that agricultural giant Monsanto's GM corn is linked to organ damage in rats.
According to the study, which was summarized by Adam Shake at Twilight Earth, "Three varieties of Monsanto's GM corn - Mon 863, insecticide-producing Mon 810, and Roundup® herbicide-absorbing NK 603 - were approved for consumption by US, European and several other national food safety authorities."
Monsanto gathered its own crude statistical data after conducting a 90-day study, even though chronic problems can rarely be found after 90 days, and concluded that the corn was safe for consumption. The stamp of approval may have been premature, however."

That's right. Corn that is genetically modified damages kidneys and livers in rats. The conclusion of the study is:

"However, in the three GM maize varieties that formed the basis of this investigation, new side effects linked to the consumption of these cereals were revealed, which were sex- and often dose-dependent. Effects were mostly concentrated in kidney and liver function, the two major diet detoxification organs, but in detail differed with each GM type. In addition, some effects on heart, adrenal, spleen and blood cells were also frequently noted...
We therefore conclude that our data strongly suggests that these GM maize varieties induce a state of hepatorenal toxicity. This can be due to the new pesticides (herbicide or insecticide) present specifically in each type of GM maize, although unintended metabolic effects due to the mutagenic properties of the GM transformation process cannot be excluded [42]. All three GM maize varieties contain a distinctly different pesticide residue associated with their particular GM event (glyphosate and AMPA in NK 603, modified Cry1Ab in MON 810, modified Cry3Bb1 in MON 863). These substances have never before been an integral part of the human or animal diet and therefore their health consequences for those who consume them, especially over long time periods are currently unknown."

They are not entirely certain whether it's all because of the insecticides and herbicides used, the mutations of the corn itself, or some combination of both. Oh joy. And by the way, Monsanto's corn is used in Dorito's, among many others.
At least the company's response was somewhat entertaining:
"the research is "based on faulty analytical methods and reasoning and do not call into question the safety findings for these products.""
In other words, "We don't like what you found, so we question your Science!" Not to mention that they responded immediately with denial, rather than, "Oh no, can this be? We shall research this right away." Kinda makes you wonder what they already knew to try and make this go away so quickly?
But theirs was quite classy, as well as essentially being a bitchslap.