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Glyphosate stays on market

Health Canada scientists say there is no reason to believe the scientific evidence it used to approve the continued use of glyphosate in weed killers was tainted.

On Friday it rejected, again, arguments that the ingredient in herbicides like Monsanto's Roundup causes cancer if the substances are used as they're supposed to be.

The department's Pest Management Regulatory Agency is required to reassess herbicides every 15 years and after such a reassessment in 2017 it approved glyphosate for continued use in Canada with some additional labelling requirements. The review looked at more than 1,300 studies and concluded glyphosate products pose no risk to people or the environment as long as they are properly used and labelled.

Glyphosate is one of the most common herbicides used in the world, is in more than 130 products sold in Canada and has widespread use by farmers to keep weeds out of their crops.

After the decision, eight objections were filed, many of which said the evidence used to approve the product was tainted because Monsanto had influenced the results.

Their accusations were largely based on documents filed in a U.S. lawsuit in which a former groundskeeper was awarded a multimillion-dollar settlement after jurors decided his cancer was linked to glyphosate.

The groups, including Ecojustice, Environmental Defence and Canadian Physicians for the Environment, wanted Health Minister Ginette Petipas Taylor to order an independent review of the Health Canada decision.

Instead Health Canada assigned 20 scientists not part of the original review to look at the matter. Connie Moase, a director in the health-effects division of the Pest Management Regulatory Agency, said Friday the scientists "left no stone unturned" in reviewing the decision.

"The objections raised did not create doubt or concern regarding the scientific basis for the 2017 re-evaluation decision for glyphosate," said Moase.

She said the documents, known as the Monsanto Papers, were mainly reviews of studies, not studies themselves, and that Health Canada's approval was based on the actual studies.

Moase added that no pest regulatory management agency in the world says glyphosate causes cancer at current levels of exposure.

Trish Jordan, the public-and-industry-affairs director for Bayer Canada's crop-science division, said the company supported the additional review Health Canada launched and is also pleased with the result.

Monsanto has previously denied any attempt to influence scientific studies on glyphosate.

"We have an unwavering commitment to sound science, transparency and to producing valuable tools that will help farmers continue to feed a growing population in a sustainable manner," Jordan said.

Elaine MacDonald, head of healthy communities for Ecojustice, said the decision is a big disappointment.

"How can we trust the science if we can't be sure that it's independent?" she said.

Muhannad Malas, the toxics program manager at Environmental Defence, said there is no reason to trust Health Canada if it assigns its own scientists to review the work of their peers.

"We maintain that the public cannot be confident about the validity of the government's decision to re-authorize glyphosate unless the health minister strikes an independent panel of experts who are not affiliated with Health Canada or industry," he said.



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