Opinion: Glyphosate, and treating science like a buffet
Published Saturday, August 7, 2021 8:42AM EDT Last Updated Saturday, August 7, 2021 8:43AM EDT
MONTREAL -- The glyphosate debate is simply messy, and a complete disservice to consumers. The inconvenient truth about chemicals in agriculture, for academics and interest groups wanting us to believe these are a threat to humans is this: they simply aren’t.
Canadians had until July 20 to comment on the federal government’s proposal to increase the amount of glyphosate herbicide residue allowed on legumes.
Now, due to some deserved public pressure, Health Canada is delaying the entire process.
The debate on glyphosate in Canada and around the world is populist, chaotic, political, and simply unsettling.
Many groups are regrettably weaponizing research only to make a point, either to support the use of the well-known chemical, also known as Round-Up, or to declare it as cancer-causing and poisonous.
Some are inopportunely treating science like a buffet, carefully selecting research to accommodate a certain narrative.
It’s messy and a disservice to the public.
At the core though, it is a battle between organic and modern family farming, or even rural against urban views, nothing more.
Consumers have every right to be concerned about the safety of the food they buy, but most of the information they are exposed to is incredibly skewed by politics from many sides.
The inconvenient truth about glyphosate is that it’s not poison, unless used irresponsibly, of course.
Most farmers adhere to responsible and sustainable practices based on precision agriculture, where overuse is both costly and wasteful.
Health Canada did not help the debate with its less-than-mediocre risk communication strategy.
Knowing it was dealing with one of the most controversial issues in agriculture, it has shown some hesitancy in disclosing all the information it had, forcing media to dig deeper into Health Canada’s “black box”.
The federal department should be as transparent as it can be, especially when dealing with the most widely used, and important, chemical in Canadian agriculture.
Misrepresentation of glyphosate’s toxicity misleads the public, the scientific community, and regulators.
With glyphosate, detection does not equal toxicity.
Health Canada’s intent is to harmonize standards across North America.
For the sake of more transparency, Health Canada should be clear about why the evaluation is being done in the first place and who is asking for it, or whether it is part of Canada’s commitment to complying with international trade and regulation agreements.
It should also explain what the risks are.
By known standards, a person would need to eat at least 32 bowls of Cheerios a day, every day, for more than a year to even approach the limit suggested by Health Canada.
Alternatively, a person would need to eat over 600 kgs of lentils in a period of a few months.
In addition, these thresholds are at least 100 times less than levels which could impact someone’s health.
Many studies which suggest glyphosate to be harmful often will set unreasonable standards based on questionable data.
Many environmentalists and organic farming groups are behind a lot of the reports condemning the use of glyphosate.
For years, these same groups went to war against genetically modified organisms, GMOs, only to realize most consumers weren’t buying the “frankenfoods” fear campaign.
Now, they are after the chemicals supporting the genetic engineering being used in agriculture but expecting modern agriculture to be chemical-free is simply unrealistic.
Over 140 chemical compounds are approved for use in the production of organic crops in Canada and CFIA data reveals that chemical residues are present on nearly half of organic produce.
We have come a long way since the dust bowl era in the Prairies.
We have collectively learned how tillage can be damaging and how soil science can serve agriculture more meaningfully, with the support of resourceful biotechnologies.
Tillage has long been used to control weeds in crop/food production.
The use of glyphosate has removed 99 per cent of the tillage area in Saskatchewan, reducing soil erosion and increasing moisture conservation.
Some consensus is building on the safety of glyphosate. A total of 17 regulatory agencies and thousands of studies have evaluated glyphosate's human health and environmental impacts, including one major report from the European Union, released in June.
Overlooked by most major media outlets in Canada, the European report has deemed glyphosate not cancer-causing.
That’s right, not carcinogenic.
The sample design and methodologies of past studies suggesting glyphosate may cause cancer were heavily criticized after they were released.
We should certainly have an ongoing debate about the use of chemicals in agriculture and our pursuit to fully understand inherent risks and verified benefits to both our health and the environment moving forward is critical.
But the fact that some organizations and academics with clear conflicts of interest continue to disregard the prevalence of evidence to support current farming practices is making our current public discourse on the issue a disservice to our communities.
Dr. Sylvain Charlebois, Director, Agri-Food Analytics Lab, Dalhousie University
- Dr. Stuart Smyth, Agri-Food Innovation and Sustainability Enhancement Chair, University of Saskatchewan