April 7, 2011
A new paper shows that consuming genetically modified (GM) corn or soybeans leads to significant organ disruptions in rats and mice, particularly in livers and kidneys. By reviewing data from 19 animal studies, Professor Gilles-Eric Séralini and others reveal that 9% of the measured parameters, including blood and urine biochemistry, organ weights, and microscopic analyses (histopathology), were significantly disrupted in the GM-fed animals. The kidneys of males fared the worst, with 43.5% of all the changes. The liver of females followed, with 30.8%. The report, published in Environmental Sciences Europe on March 1, 2011, confirms that “several convergent data appear to indicate liver and kidney problems as end points of GMO diet effects.” The authors point out that livers and kidneys “are the major reactive organs” in cases of chronic food toxicity.
“Other organs may be affected too, such as the heart and spleen, or blood cells,” stated the paper. In fact some of the animals fed genetically modified organisms had altered body weights in at least one gender, which is “a very good predictor of side effects in various organs.”
The GM soybean and corn varieties used in the feeding trials “constitute 83% of the commercialized GMOs” that are currently consumed by billions of people. While the findings may have serious ramifications for the human population, the authors demonstrate how a multitude of GMO-related health problems could easily pass undetected through the superficial and largely incompetent safety assessments that are used around the world.
One of the most glaring faults in the current regulatory regime is the short duration of animals feeding studies. The industry limits trials to 90 days at most, with some less than a month. Only two studies reviewed in this new publication were over 90 days—both were non-industry research.
Short studies could easily miss many serious effects of GMOs. It is well established that some pesticides and drugs, for example, can create effects that are passed on through generations, only showing up decades later. IN the case of the drug DES (diethylstilbestrol), “induced female genital cancers among other problems in the second generation.” The authors urge regulators to require long-term multi-generational studies, to “provide evidence of carcinogenic, developmental, hormonal, neural, and reproductive potential dysfunctions, as it does for pesticides or drugs.”
Nearly all GM crops are described as “pesticide plants.” They either tolerate doses of weed killer, such as Roundup, or produce an insecticide called Bt-toxin. In both cases, the added toxin—weedkiller or bug killer—is found inside the corn or soybeans we consume.