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The relationship between dietary exposure to persistent organic pollutants from fish consumption and type 2 diabetes among First Nations in Canada
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The relationship between dietary exposure to persistent organic pollutants from fish consumption and type 2 diabetes among First Nations in Canada
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Journal Article
The relationship between dietary exposure to persistent organic pollutants from fish consumption and type 2 diabetes among First Nations in Canada
2021
Overview
Objective
We previously examined the associations between dietary dichlorodiphenyldichloroethylene (DDE) and polychlorinated biphenyls (PCBs) intake from fish consumption and type 2 diabetes (T2D) prevalence in Ontario and Manitoba. This study aims to further explore the relationship in a regionally representative sample of First Nations adults living on-reserve across Canada.
Methods
Dietary, health and lifestyle data collected by the cross-sectional First Nations Food, Nutrition and Environment Study (2008–2018) were analyzed. This participatory study included 6091 First Nations adult participants who answered questions on T2D. The consumption of locally caught fish was estimated with a food frequency questionnaire. A total of 551 samples from 96 fish species were collected and analyzed for the presence of DDE and PCBs. The associations between fish and dietary DDE/PCBs intake with self-reported T2D were investigated using multiple logistic regression models adjusted for confounders.
Results
Dietary exposure to DDE (>2.11 ng/kg/bw) and PCBs (>1.47 ng/kg/bw) vs no exposure was positively associated with T2D with ORs of 2.33 (95% CI: 1.24–4.35) for DDE and 1.43 (95% CI: 1.01–3.59) for PCBs. The associations were stronger among females (DDE OR = 3.11 (1.41–6.88); PCBs OR = 1.76 (1.10–3.65)) and older individuals (DDE OR = 2.64 (1.12–6.20); PCBs OR = 1.44 (1.01–3.91)) as compared with males and younger participants. Also, significant dose-response relationships were found for fish consumption in females only.
Conclusion
This study confirms our previous findings that dietary DDE/PCBs exposure may increase the risk of T2D. The effect of DDE/PCBs from fish consumption is driven by geographical differences in DDE/PCBs concentrations in fish and by the amount of fish consumed, and is more prominent in females than in males.
Publisher
Springer International Publishing,Springer Nature B.V
Subject
/ Adults
/ Animals
/ DDE
/ Diabetes
/ Diabetes mellitus (non-insulin dependent)
/ Diabetes Mellitus, Type 2 - epidemiology
/ Diet
/ Dietary Exposure - adverse effects
/ Dietary Exposure - statistics & numerical data
/ Exposure
/ Female
/ Females
/ Fish
/ Fishes
/ Food
/ Food Contamination - analysis
/ Humans
/ Indigenous Canadians - statistics & numerical data
/ Male
/ Males
/ Medicine
/ Nutrition and Environment Study: Quantitative Research
/ PCB
/ Persistent organic pollutants
/ Persistent Organic Pollutants - toxicity
/ Special Issue on First Nations Food
/ Special Issue on First Nations Food, Nutrition and Environment Study: Quantitative Research
