An EPA official who was in charge of evaluating the cancer risk of Monsanto’s popular Roundup weedkiller has been accused of conspiring with the company to “kill” the study. Jess Rowland, the former manager of the agency’s pesticide division, is rapidly becoming an important figure in the more than 20 lawsuits that have piled up accusing the company of burying evidence that its herbicide can cause non-Hodgkin’s lymphoma.

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The active ingredient in Roundup, glyphosate, has come under fire in recent years for its potential links to cancer. After the World Health Organization declared glyphosate likely to be a carcinogen, a number of people who’ve been exposed to the weedkiller have stepped up and attempted to sue the company. As public pressure has grown, activists have begun calling on the US Environmental Protection Agency to ban the herbicide altogether.

The agency, however, has been slow to act despite the public pressure that’s been steadily building – and a recent court case may have revealed exactly why. Last week, Federal Judge Vince Chhabria released a number of court documents detailing Monsanto’s internal communications and the company’s correspondence with the EPA.

Related: Activists call on the EPA to ban glyphosate

The records reveal that not only did Rowland go out of his way to try to bury research into the cancer-causing potential of glyphosate, but that Monsanto’s own employees had ghostwritten several papers on Roundup’s safety. These are the same reports, later attributed to various academic researchers, which the EPA used to declare Roundup safe for public use. While it’s possible the EPA wasn’t aware of Monsanto’s collaboration on the original studies, it does call into question the accuracy of the agency’s assessment.

Monsanto is, naturally, denying the allegations, and claiming that the company’s internal communications have been taken out of context. On the other hand, it’s hard to see how else statements like “we would be keeping the cost down by us doing the writing and [the scientists] would just edit & sign their names so to speak” could be construed to mean anything else. The company has testified in court that this is merely a reference to minor edits made to the paper, rather than ghostwriting.

If it’s true that academics publishing research on glyphosate’s safety are in bed with the company, and that EPA officials like Rowland are working off this biased data, the agency’s decision should be revisited as soon as possible. The WHO isn’t the only organization that’s found evidence of this herbicide’s risks – the International Journal of Cancer and the journal Occupational and Environmental Medicine have both recently published research on the link between pesticide exposures and non-Hodgkin’s lymphoma as well. Roundup has already been banned in several countries following the burst of recent studies, and the US would be wise to follow suit.

Via Bloomberg Markets

Images via Chafer Machinery, Mike Mozart