July 20, 2024

3 thoughts on “BCLocalNews.com – Pesticide lobby group says their products are safe

  1. You missed the last question and answer in that faq.

    Is it safe to use the herbicide 2,4-D on my lawn?

    Following extensive consultation and scientific review using the most current scientific methods, Health Canada has determined that 2,4-D meets Canada’s strict health and safety standards, and as such can be used safely when label directions are followed. Health Canada’s review concurs with the findings of regulators in other OECD countries, including the United States, European Union, New Zealand and the Word Health Organization.

  2. It’s all here:
    http://www.hc-sc.gc.ca/cps-spc/pubs/pest/_decisions/rvd2008-11/index-eng.php

    Has the PMRA considered the ban of 2,4-D in Sweden and the associated decline in non-Hodgkins lymphoma (Hardell et al. 2003)?
    Response

    2,4-D is no longer used in Sweden or Norway, and its use is severely restricted in Denmark. Environmental effects are cited as the primary reason for these actions as 2,4-D has the potential to enter groundwater, the primary source of drinking water in these countries. However, subsequent to these actions, the European Commission, upon completion of its re-evaluation of 2,4-D in October 2001, concluded that 2,4-D was acceptable for continued registration (European Commission 2001).

    In the above-cited paper, the authors relate the decline in non-Hodgkin’s lymphoma in Sweden to the ban of phenoxyacetic acids and chlorophenols. However, in the discussion, the authors also state:

    Of interest is that the levelling off of the incidence of NHL [non-Hodgkin’s lymphoma] during the 1990s has also occurred in countries other than Sweden. Data from the United States, Finland, and Denmark show a similar trend. However, for Norway and the United Kingdom, no such clear pattern has yet emerged.

    Thus, although the United States showed a levelling off of non-Hodgkin’s lymphoma, there was no reported decrease in the use of phenoxyacetic acids. Norway no longer uses 2,4-D, yet there is no decline in non-Hodgkin’s lymphoma. Therefore, the decline of non-Hodgkin’s lymphoma incidence cannot be specifically related to a decrease in 2,4-D use.

    A number of other epidemiology studies (both independent and industry-funded) from the United States, New Zealand and Australia report no association between 2,4-D and soft-tissue sarcoma, non-Hodgkin’s lymphoma or Hodgkin’s lymphoma (Smith et al. 1983, Hoar et al. 1986, Woods et al. 1987), and more recent studies have not shown an association between 2,4-D and non-Hodgkin’s lymphoma or other cancers (e.g. Asp et al. 1994, Lynge 1998, Burns et al. 2001). Several major scientific panels have evaluated this body of research and have described the evidence for cancer effect in humans as limited, inconclusive, inconsistent and weak.

    *****
    How is 2,4-D related to Agent Orange?
    Response

    Agent Orange was a mixture of 2,4-D and a second herbicide, 2,4,5-T. However, the chemicals used for Agent Orange, and their contaminant levels, were not the same as those commercially available at the time, or since. With the refined manufacturing processes that have been imposed by federal regulatory bodies over the years, contamination of 2,4-D with dioxin levels of concern is not expected. 2,4,5-T was found to be contaminated with TCDD at levels much higher than ever seen in 2,4-D. 2,4,5-T was withdrawn from the market in the early 1980s, in part, because of concerns with dioxins.

    *****
    The PMRA’s numerous chemists, who specialize in pesticide analysis, pesticide characteristics and the fate of pesticides in humans and the environment, are familiar with the conditions of dioxin formation in 2,4-D.

    The ratio between dichloro-dioxins (e.g. 2,7-DCDD) and higher chlorinated dioxins is likely to be variable because of many other competing reactions under the conditions where chlorodioxins can be formed. Health effects from lower-congener dioxin contamination would be accounted for in the toxicological test results of 2,4-D.

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