fish oil

Omega-3 fatty acids are essential for human health. For example, they are crucial for proper brain function and also may support joint health by reducing inflammation.

Fish oil supplements (including distilled versions and cod liver oil) contain the long chain omega-3 fatty acids EPA and DHA but may also contain persistent organic pollutants such as PCB (see also here) and DDT, as well as toxic elements such as arsenic and mercury (see a mercury comparison between vaccines and tuna here). Dark fish (such as salmon) consumption may be particularly problematic.

Because of these high levels of pollutants in fish, mercury levels in hair samples and arsenic levels in blood samples can now be used as biomarkers that can estimate a person’s past fish consumption.

The good news is that we can get all the omega-3s we need from plants. However, the omega-3 fatty acid most commonly found in plant foods is the short chain omega 3 ALA (alpha-linolenic acid). The body can lengthen ALA into EPA and DHA, but it may not convert enough for optimal health. Therefore, an fish-free DHA and/or EPA supplement may be a good idea. These plant-based supplements may provide all the benefits without the contaminants.

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Watch videos about fish oil

  • Fish Intake Biomarker
    Fish Intake Biomarker
    Blood arsenic levels may be an accurate indicator of seafood intake
  • Is Cod Liver Oil Good For You?
    Is Cod Liver Oil Good For You?
    Even distilled cod liver oil supplements may have toxic levels of vitamin A.
  • DDT in Fish Oil Supplements
    DDT in Fish Oil Supplements
    Though banned decades ago, the pesticide DDT persists in the food supply.
  • Preventing Arthritis
    Preventing Arthritis
    Even flexitarians might be at increased risk for developing arthritis.
  • Algae-Based DHA vs. Flax
    Algae-Based DHA vs. Flax
    Everyone should consider taking plant-based (yeast- or algae-derived) long chain omega-3 fatty acid (DHA/EPA) supplements.
  • Plant-Based Omega-3 Supplements
    Plant-Based Omega-3 Supplements
    By choosing algae-based sources of long chain omega-3 fatty acids, one may be able to get the benefits of fish consumption without the risks.
  • Mercury in Vaccinations vs. Tuna
    Mercury in Vaccinations vs. Tuna
    Balancing the risks and benefits of fish consumption.
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