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Dublin: 10 °C Thursday 23 May, 2013

France orders probe after rat study links GM corn, cancer

Rats developed tumours after taking Monsanto’s genetically modified corn.

 Francois Mori/AP/Press Association Images
Francois Mori/AP/Press Association Images
Image: Francois Mori/AP/Press Association Images

PARIS, Sept 19, 2012 (AFP) – France’s government on Wednesday asked a health watchdog to carry out a probe, possibly leading to EU suspension of a genetically-modified corn, after a study in rats linked the grain to cancer.

Agriculture Minister Stephane Le Foll, Ecology Minister Delphine Batho and Health and Social Affairs Minister Marisol Touraine said they had asked the National Agency for Health Safety (ANSES) to investigate the finding.

“Depending on ANSES’ opinion, the government will urge the European authorities to take all necessary measures to protect human and animal health,” they said in a joint statement.

“(The measures) could go as far as invoking emergency suspension of imports of NK603 corn to Europe pending a re-examination of this product on the basis of enhanced assessment methods.”Preview

Earlier, French scientists led by Gilles-Eric Seralini at the University of Caen in Normandy unveiled a study that said rats fed with NK603 corn or exposed to the weedkiller used with it developed tumours.

NK603 is a corn, also called maize, made by US agribusiness giant Monsanto.

It has been engineered to make it resistant to Monsanto’s herbicide Roundup.

This enables farmers to douse fields with the weedkiller in a single go, thus offering substantial savings.

Genetically modified (GM) crops are widely grown in North America, Brazil and China but are a hot-button issue in Europe.

The study, published in the peer-reviewed journal Food and Chemical Toxicology, says it is the first to look at rats over their normal lifespan of two years.

“For the first time ever, a GM organism and a herbicide have been evaluated for their long-term impact on health, and more thoroughly than by governments or the industry,” Seralini told AFP. “The results are alarming.”

Two hundred male and female rats were split into 10 groups of 10 animals.

One was a “control” group which was given ordinary rat food that contained 33 percent non-GM corn, and plain water.

Three groups were given ordinary rat food and water with increasing doses of Roundup, reflecting various concentrations of the herbicide in the food chain.

The other six were fed rat food of which 11, 22 or 33 percent comprised NK603 corn, either treated or not with Roundup when the corn was grown.

The researchers found that NK603 and Roundup both caused similar damage to the rats’ health, whether they were consumed together or on their own.

Premature deaths and sickness were concentrated especially among females.

At the 14-month stage of experiment, no animals in the control groups showed any signs of cancer, but among females in the “treated” groups, tumours affected between 10 and 30 percent of the rodents.

“By the beginning of the 24th month, 50-80 percent of female animals had developed tumours in all treated groups, with up to three tumours per animal, whereas only 30 percent of controls were affected,” it said

Males which fell sick suffered liver damage, developed kidney and skin tumours and digestive problems.

Breaking with a long tradition in scientific journalism, the authors allowed a selected group of reporters to have access to the paper, provided they signed confidentiality agreements that prevented them from consulting other experts about the research before publication.

Asked to respond, the French unit of Monsanto said “it is too soon to make a serious comment because we have to evaluate the study. As soon as it is available, our experts will look closely at it to give their scientific assessment.”

Green groups say GM crops could be dangerous to health and the environment, although this claim has so far found no traction in large-scale studies.

The Monsanto spokesman said that “more than 300 peer-reviewed studies” had found that GM food was safe.

In 2009, the European Food Safety Agency (EFSA) panel on GM organisms determined that NK603 was “as safe as conventional maize”.

“Maize NK603 and derived products are unlikely to have any adverse effect on human and animal health in the context of the intended uses,” it said, delivering a judgement based in part on a 90-day feeding study on rats.

NK603 can be imported but cannot be grown in Europe.

Only Monsanto’s MON810 transgenic corn and a gene-modified potato, Amflora, made by BASF, have authorisation for being grown in Europe.

However, Austria, Bulgaria, France, Greece, Hungary, Luxembourg and Romania have outlawed the growing of MON810 on their territory, citing the principle of precaution.

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Comments (29 Comments)

  • Jesus, could they not have noticed this earlier……I mean, come on, corn plants that have been sprayed repeatedly with roundup…..a weedkiller whose instructions tell you to wear a mask, gloves protective clothing etc when spraying it…….

    Reply
    • Do you normally ingest weed killer?
      It’s surprisingly not-obvious, especially since one doesn’t exactly say “oh, I better put on me mask, gloves and goggles in case it gives me tumours” when they’re going out to spray the roundup. One assumes its to prevent irritation to the skin or the eyes.
      The results are remarkably clear though, interesting. They are usually not so clear. Fair play to the researchers.

      Reply
    • Amanda 19/09/12 #

      Roundup is practically one of the safest chemicals around.
      i generally hate all sprays and use very complex chemicals on cereals.
      i looked how roundup actually works having always thought it made the plant take in
      more water to burst plant cells. white clover and perennial grasses regrow after 10 weeks.
      it looks like roundup alters the amino acid profile during growing.
      therefore as soon as the plant is dead, then that plant can be eaten or buried.
      i wonder what it does to the plant that is resistant to the changing affects of roundup.
      looking at what a body does with excess tyrosine etc leads me to believe that it is down to the rats.
      rats can in three generations become resistant to some poisons by changing their dna.
      i think it is a load of rubbish since all carnivores break down amino acid blocks and the product in question
      would only be used after sowing when the crop is young. maize is a 5 to 6 month crop

      Reply
    • @amanda I agree with you roundup these days is pretty safe

      Reply
  • Stratospheric lawsuits on the horizon.

    Reply
  • How much did it cost to buy off the European Food Safety Agency panel that determined it was as safe as ordinary corn in 2009, I wonder?

    Reply
  • The study did not link GM corn to cancer. I just read the paper, I have access via my university. The cancers seem to be caused by RoundUp. More worryingly the levels involved are around permitted drinking water standards (0.5 parts per billion).

    This is would require Roundup to be banned, not just GM corn. Roundup is legal in Europe, you can bug it from your local garden centre.

    Reply
  • Any idea what foods contain NK603? It sounds too delicious to pass up

    Reply
    • In the US, practically everything you eat contains or at least would have been fed GM Corn (some containing traces of Roundup, recall it’s the roundup not just GM that the researchers linked to cancer).

      For example, Cattle in the US are given feed derived from waste corn, left over from ethanol production (biofuel), instead of grass or silage. Hi-fructose corn syrup finds its way into fast foods and sodas.

      Now I’d like to know the roundup levels in these foods, our food. Researchers found cancer was caused at very low levels, 0.5 parts per billion of roundup i.e. legal levels.

      Reply
  • Damn them farmers with there tamaco crops getting me addicted to smoking

    Reply
  • When will we realise that modern governments and corporations are destroying the earth and must be stopped?
    “The World According To Monsanto-A great documentary exposing the evil agricultural nightmare called Monsanto and the story of Roundup and Roundup Ready Soybeans. A 2004 documentary film which makes an in-depth investigation into unlabeled, patented, genetically engineered foods that have quietly made their way onto grocery stores in the United States for the past decade. It voices the opinions of farmers in disagreement with the food industry and details the impacts on their lives and livelihoods from this new technology, and shines a light on the market and political forces that are changing what we eat. The film decries the cost of a globalized food industry on human lives around the world, and highlights how international companies are gradually driving farmers off the land in many countries. Potential global dependence of the human race on a limited number of global food corporations is discussed, as is the increased risk of ecological disasters — such as the Irish Potato Famine (1845–1849) — resulting from the reduction of biological diversity due to the promotion of corporate sponsored monoculture farming. The issue of incorporating a terminator gene into plant seeds is questioned, with concern being expressed about the potential for a widespread catastrophe affecting the food supply, should such a gene contaminate other plants in the wild. Legal stories reported by the film related how a number of farmers in North America have been sued by Monsanto; and the defendant of the Monsanto Canada Inc. v. Schmeiser case is interviewed.”
    http://www.youtube.com/watch?v=DhHbm_Z_pW8

    Reply
  • Ronan 19/09/12 #

    Lots of grains are sprayed to ripen them early, these are then used in cattle feeds thus entering the beef food chain. This cannot be healthy or morally right.

    Reply
  • There are quite a few very good documentaries on Monsanto. In fact I believe they were run out of Ireland many moons ago because people either read more or cared more back then.

    Reply
  • I hope this heralds the end of Monsanto for it’s crimes againist humanity and all living beings.

    Reply
  • Budd Ha 20/09/12 #

    Imagine would be expensive to do a larger study than was done considering the lack of funds on the side of the research team questioning the most powerful corp in the agri industry. Money flows and nowadays flows into generating more of it with less and less moral considerations of course, which is generally unprofitable. A sensitive issue indeed especially in these times.

    Reply
  • I just read the paper more carefully, they divided their rats into groups of 10, then fed each group of 10 different levels if GM and/or roundup. But 10 rats is far too small a number to study, as Radom variation will cause cancer rate to vary between such small groups. Also, curiously, they don’t present a graphs showing the control group rats, not fed GM or roundup

    Reply
    • In the histograms the “0″ treatment under the GMO only graph would denote the control or normal levels of mortality and tumours. Indeed 10 is a small number but the overall trend seems convincing. It will probably be a year or two before a bigger trial puts that particular issue to rest.

      Reply
  • Has anyone researched whether white rays are genetically predisposed to suffering from cancer?

    Reply
    • They were Sprague-Dawley rats, the cancer rate is highly variable. From previous studies, 42-62% of female and 15-34% sprague-dawley male rats normally develop cancer i.e. the non-GM control group. The tumour incidence in females is approx. double that of males.

      “Spontaneous Tumors in Srague-Dawley Rats and Swiss Mice” page 2772

      Reply
    • JayK 19/09/12 #

      In addition, the groups of rats were quite small. A small sample size will blur the statistical analysis, especially given the rats varying predisposition to cancers (intra-group variation adds more blur). It’s a paper that warrants further investigation, not one that proves association between GM, RoundUp and cancer. Bigger sample sizes and a species of rat with less variance/cancer disposition would do it.

      Reply
    • Furthermore, I re-read the paper, they divided 100 rats into groups of only 10 and fed these 10 rats various levels of GM Corn and Roundup or none at all.

      Given the naturally high and variable cancer rates in these rats, 10 rats is far too small a number. The variation in cancer could be due to random chance. Also, the observed cancers and the increased rates in female rats is as expected and seen in normal rats.

      I don’t trust this study.

      Reply
    • Oh, just read JKay, noticed we say the same thing.

      Reply
  • Andrew P 20/09/12 #

    “health watchdog” ? Since when are canines looking after France’s health. Worrying development.

    Reply

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