Omega-3 dietary supplements in capsule form contain detectable levels of PCBs
the verdict
SUPPORTED
the evidence backs this
confidence 86/100
Multiple analytical surveys of omega-3 dietary supplements and fish oil capsules confirm the presence of detectable levels of polychlorinated biphenyls (PCBs), reflecting environmental bioaccumulation in marine sources.
Evidence for · 4
Dioxins and polychlorinated biphenyls (PCBs) in fish oil dietary supplements: Occurrence and human exposure in the UK
2006 · cited by 58
A survey of UK fish oil supplements found detectable levels of PCBs ranging from 1.1 to 41 ng kg-1 for dioxin-like PCBs.
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More for · 3
A nutritional-toxicological assessment of Antarctic krill oil versus fish oil dietary supplements.
2014 · cited by 21
The study notes that extraction of fish oils can lead to persistent organic pollutant (POP) contamination, noting intermediate levels of POPs in krill and fish oils.
Estimation of Polychlorinated Biphenyls Intake through Fish Oil-Derived Dietary Supplements and Prescription Drugs in the Japanese Population
2019 · cited by 3
Testing of fish oil dietary supplements in Japan detected PCBs in the majority of sampled products.
Polychlorinated biphenyl concentrations and estimated intakes in fish oil supplements on the Japanese market.
2024 · cited by 3
Analysis of fish oil supplements on the Japanese market confirmed quantifiable concentrations of total PCBs across the products.