Sleep disorders
SNAP Comment: Although several pesticides linked to sleep problems are not currently registered in Canada, many have been in the past. This study is a long-term exposure study, so previous exposure to now banned pesticides may be relevant. Currently there are 98 imidacloprid containing pesticides registered in canada, Organaochlorines: 0 chlorpyrifos, (historically 297) 0 chlordane (historically 11), 0 dichlorodiphenyl trichloroethane DDT) ( historically 55), 0 endosulfan (historically 16), five organophosphates:0 ethyl p-nitrophenyl phenylphosphorothioate EPN (historically 0), 0 folidol (historically 0), methamidophos (historically 5), 0 mevinphos (historically 0), 0 profenofos (historically 0), three carbamates:3 carbaryl (historically 206), 0 carbofuran (historically 7), 4 methomyl (historically 13), 0 carbosulfan (historically 0) and imidacloprid (above); herbicides:8 diuron (historically 23) and 0 paraquat (historically 16) and five fungicides: 0 benomyl (historically 13), 0 Bordeaux mixture (historically 0), 3 carbendazim (historically 7), 0 copper sulphate (historically 0, although there were historically 543 copper containing pesticides), 89 metalaxyl (historically 138).
Sleep Disorders in Farmers and Farmworkers Linked to Pesticide Exposure in Study Supporting Similar Findings (Beyond Pesticides, January 31, 2025) A recent cross-sectional study in Heliyon highlights the link between sleep disorders in Thai farmers and pesticide exposure. The authors find pesticide exposure as an important risk factor for sleep disorders after surveying 27,334 farmers over the age of 20 who had work experience for at least five years. 38 individual pesticides are included in the study... These pesticides were chosen based on findings from previous studies that indicated a connection to sleep health and their common usage in Thailand.” “For individual pesticides, significant associations were observed in 19 out of 38 individual pesticides. There were twelve insecticides, including three organochlorine insecticides (chlorpyrifos, chlordane, dichlorodiphenyl trichloroethane DDT), five organophosphates (ethyl p-nitrophenyl phenylphosphorothioate EPN, folidol, methamidophos, mevinphos, profenofos), three carbamates (carbaryl, carbofuran, methomyl), and imidacloprid.” Overall, the study shows that the female group displays higher associations with sleep disorders. Significant associations are also noted for “two herbicides (diuron and paraquat) and five fungicides (benomyl, Bordeaux mixture, carbendazim, copper sulphate, metalaxyl). The association for some chemicals, e.g., chlorpyrifos, DDT, endosulfan, carbosulfan were in a dose-response pattern.”
“A notable strength of this study lies in its collection of exposure information for various pesticides, coupled with the use of medically diagnosed diseases confirmed by ICD-10 a medical classification list by the World Health Organization (WHO), which is considered more accurate than relying on self-reported outcomes.