❋ Detoxcellence

Farmed Salmon

Conventionally farmed Atlantic salmon.

70Low burden · out of 100
Cleaner swapWild-caught salmon, or smaller oily fish like sardines and mackerel

How this score is built

  1. 100Start
  2. 90.8Chemical hazard 2 × 4.6−9.2
  3. 80.6Everyday exposure 3 × 3.4−10.2
  4. 70Persistence 4 × 2.6−10.4, then rounded to 70
  5. LowThe band70 sits in 60–79.

What each input rests on

The three ratings behind the score, and the studies each rests on
InputRatingEvidence
Chemical hazard2/10unsourced input
Everyday exposure3/10

  • Analysing over 2 metric tons of farmed and wild salmon from around the world, organochlorine contaminant concentrations were significantly higher in farmed than in wild salmon, and highest in European-farmed fish.

    Global assessment of organic contaminants in farmed salmon · Science 2004

    DOI 10.1126/science.1091447 · PMID 14716013 · Abstract · read 2026-10-09

Persistence4/10unsourced input

Ratings are editorial. A study listed here supports the rating; it did not compute it. How the index is built

What this means for you

Farmed fish can carry more of certain fat-soluble contaminants than wild. It is still a good protein source — variety and smaller species lower the load.

Evidence strength: moderate

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