Monsanto herbicides are prepared prior to being sprayed on food crops. (Photo from the USDA via Wikimedia Commons)
St. LOUIS – The agrochemical and seed giant Monsanto, one of the world’s most controversial corporations, is attempting to take down a World Health Organization (WHO) agency that in 2015 linked the Monsanto product glyphosate to an increased risk of cancer in humans. That year, the WHO’s International Agency for Research on Cancer (IARC) found that the widely used herbicide is “probably carcinogenic to humans.”
The decision was a major blow to Monsanto as its most popular product, Roundup, is glyphosate-based. Following the IARC’s decision, the European Union began to consider banning the product altogether, potentially depriving Monsanto of a significant stream of revenue. Monsanto, which is seeking the EU’s renewal of the chemical’s license for the next 10 years, is now also fighting a high-profile court case attempting to bring IARC’s 2015 decision – as well as the agency itself – under scrutiny.
Central to Monsanto’s case is its argument that the IARC failed to consider two studies that found glyphosate to be safe. The first was conducted by the German-based Federal Institute for Risk Assessment (BfR), which concluded in 2015 that “glyphosate is unlikely to pose a carcinogenic risk to humans.” The second is a study from “independent” German scientist Helmut Greim, who conducted a meta-analysis and found that “glyphosate’s carcinogenic potential is extremely low or non-existent.”
Monsanto has claimed that IARC’s lack of consideration for these two studies proved that the agency’s findings were an “outlier” in linking glyphosate exposure to cancer. Their failure to include these two studies, according to Monsanto’s vice president of strategy, Scott Partridge, shows that the IARC “was corrupted apparently with individuals who have an agenda” and warrants an external investigation into the workings of the agency and its leadership.
Partridge told Politico in an interview that “When an organization such as IARC is given authority, with that comes a responsibility … to be objective, transparent, thorough and fair. IARC has violated each and every one of those responsibilities and that should be troubling to anyone who is interested in preserving sound science.”
Though Monsanto’s reasoning may be considered sound be some, there is clear evidence that the studies that form the base of Monsanto’s legal argument are hardly “sound science” themselves. The first study conducted by BfR, for instance, in drawing conclusions contrary to those of the IARC, relied heavily on unpublished papers provided to its authors by the Glyphosate Task Force — an industry lobbying group, working to relicense the herbicide in the EU, whose website is run by Monsanto UK.
The meta-analysis conducted by Helmut Greim is little different. According to the declaration of interest found within the study, all of Greim’s co-authors are employed by either the Glyphosate Task Force or Monsanto. Greim himself was funded by Monsanto “as an independent consultant for his expert contributions to this manuscript.” Other work by Greim, including one entirely funded by Monsanto, lists him as having previously served as an independent consultant for Monsanto and for the Glyphosate Task Force.
This amounts to Monsanto calling for an investigation into the credibility of an international agency after it refused to consider studies either funded by Monsanto or written by Monsanto-linked employees with a vested interest in glyphosate’s reapproval by the European Union.
As Anton Safer, an independent scientist at the University of Heidelberg who has done extensive research into the standards of industry-funded scientific studies, told Politico: “IARC only looks at studies of quality and sorts out all studies that are deemed not reliable, at least to a certain degree. The claim from industry is that ‘we are perfect and we are working to good laboratory practices.’ The truth is that there are violations which could lead to major questions arising of the studies used by industry.”
Ironically, if IARC had considered these two industry-funded studies that are laden with conflicts of interests, it would have undermined their scientific credibility to the point where Monsanto would have a genuine cause to complain.
This is just the latest attempt on Monsanto’s part to attempt to convince regulatory bodies and governments that its flagship product is safe and not a danger to human and environmental health. Monsanto itself has known for over 36 years that glyphosate is linked to cancer in humans, yet continues to hope that aggressive legal tactics, coupled with industry scientists on its payroll, will serve to rehabilitate the tarnished reputation of one of the world’s most controversial and unpopular companies.
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