Risk assessmentindependent cross-checkabstract only checked I-FSH-17 standard review
EFSA: dioxins in food (2018)
Risk for animal and human health related to the presence of dioxins and dioxin-like PCBs in feed and food.
Overview
EFSA Panel on Contaminants in the Food Chain (CONTAM) et al.. EFSA J 2018 · PMID 32625737 · DOI 10.2903/j.efsa.2018.5333
EFSA set a stricter weekly limit for dioxins (2 pg TEQ/kg/week), which many Europeans exceed from their whole diet.
Does the study support the specific claim? Unclear · Methodological quality: high
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Set safe intake.
- How was the study done?
Risk assessment.
- How many people, animals or samples were studied?
EU data.
- What was actually found?
TWI 2 pg TEQ/kg bw/week.
- How large was the observed effect?
Intakes 2.1-10.5 (mean).
- What do the results mean in everyday life?
Dioxins are a whole-diet issue.
- What does it say about Elawady's specific claim?
Context only.
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
That farmed fish is the main source.
Scientific in-depth review
1. Full reference
- Authors
- EFSA Panel on Contaminants in the Food Chain (CONTAM) et al.
- Journal
- EFSA J
- Year
- 2018
- Identifier
- PMID 32625737 DOI 10.2903/j.efsa.2018.5333
- Verification
- verified – PubMed efetch 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract/record
2. Research question
Risks of dioxins and DL-PCBs in feed and food; tolerable intake
3. Study design and population
- Study design
- Risk assessment – EFSA CONTAM Panel scientific opinion (risk assessment)
- Population
EU population; farm animals
- Country
EU
- Period
2018
- Sample size
EU occurrence/consumption data
4. Methods and endpoints
- Exposure / intervention
Dietary PCDD/F and DL-PCB
- Comparator
TWI
- Endpoints
Semen quality (critical effect); exposure
- Statistical methods
Toxicokinetic modelling
5. Actual results
- Results
TWI 2 pg TEQ/kg bw/week; mean and P95 intake in adolescents to very elderly 2.1-10.5 and 5.3-30.4 pg TEQ/kg bw/week, 'implying a considerable exceedance of the TWI'.
- Absolute risks
not reported
- Authors' conclusion
TWI established; considerable exceedance in Europe from the whole diet.
6. Strengths
- Official EU risk assessment
7. Weaknesses
- Single critical study
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- not assessable
- Rationale
Official opinion.
9. Assessment of the statistical interpretation
10. Relevance to the specific claim
Context for C-FSH-02/03 (whole-diet exceedance; not specific to farmed fish).
11. Independent contrary findings
12. Transferability to Germany and Europe
High.
13. Overall methodological judgement
Key EU reference; abstract does not single out farmed fish.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | high |
| Risk of bias | not assessable |
| Precision of results | not applicable |
| Directness | indirect |
| Reproducibility | unknown |
| Consistency with the overall evidence | unknown |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Contribution of farmed salmon under the new TWI.
15. Linked fact checks
- Farmed fish today accumulate PCBs, dioxins and PBDEs at concentrations significantly higher than in their wild counterparts (present-tense generalisation in the archive summary). – Studies with mixed or unclear results
- Farmed Atlantic salmon from northern Europe should be eaten no more than once every five months to stay below an acceptable cancer-risk threshold (and, per the archive's card for Foran 2005, dioxin-contaminated farmed salmon less than once a month). – Studies with mixed or unclear results