Residues of Monsanto’s Roundup herbicide found in GM food and feed can cause cell damage and even death, even at very low levels. The authors of a study on the subject say their research "... points to undesirable effects which are currently masked or hidden from scientific scrutiny."
Roundup herbicides are among the most commonly used in the world, especially on GM crops that are engineered to be Roundup resistant. Their residues are among the major pollutants, and they are authorized as residues contaminating GM foods and feed at the tested levels.
The researchers studied toxicity mechanisms of four different Roundup formulations in human cells. The formulations were diluted at minimal doses (up to 100,000 times or more), but they still caused cell death within a few hours. The researchers also noted membrane and DNA damages, and found the formulations inhibit cell respiration.
Source - www.mercola.com