Health Canada stands firm on its approval of a popular herbicide despite the recent retraction of a critical research paper. The 25-year-old study, which stated that glyphosate, the main component in Roundup, is safe for human use, was pulled by the journal Regulatory Toxicology and Pharmacology. The decision to retract the paper was based on documents revealed in U.S. legal proceedings.
The revelation has sparked concerns among environmental advocates like Beatrice Olivastri, CEO of Friends of the Earth Canada, who called the retraction a significant blow. The journal’s notice highlighted potential misconduct, indicating that Monsanto employees, the manufacturer of Roundup, may have had a hand in writing the paper without proper credit—a practice known as ghostwriting. The documents also suggested that Monsanto might have financially supported the study’s authors.
Despite the retraction, Health Canada emphasized that its previous evaluation of glyphosate remains unchanged. The agency conducted an independent review of the primary data sources referenced in the now-retracted study. Health Canada’s assessment included over 1,300 studies from various sources, such as published scientific literature, industry-provided research, and data from regulatory bodies.
The department assured the public that glyphosate levels in humans are significantly below the threshold for concern, warranting no further investigation. Health Minister Marjorie Michel’s office reiterated Health Canada’s position without additional comments.
Calls for a moratorium on glyphosate sales and a special review of the pesticide have been raised by environmental groups like Environmental Defence. Cassie Barker, a senior program manager at the organization, urged Health Canada to consider the latest scientific findings that suggest potential harm from glyphosate exposure.
Glyphosate, widely used in Canada and globally, is a key ingredient in numerous herbicides, including those applied to crops like canola and wheat. Despite concerns raised by various parties, Bayer and Monsanto maintain their stance on the safety of glyphosate-based products, emphasizing regulatory approvals and safety assessments conducted by health authorities worldwide.
Critics, however, point to conflicting assessments, with the UN’s International Agency for Research on Cancer categorizing glyphosate as “probably carcinogenic to humans” in 2015. Bruce Lanphear, a health sciences professor, emphasized the need for continuous review of pesticide safety standards, particularly in light of recent developments like the retraction of the glyphosate study.
In conclusion, the controversy surrounding glyphosate underscores the necessity for ongoing scrutiny and evaluation of pesticide safety to protect public health and the environment.
