4 ms·

Fish is not the only source of DHA. Walnuts, acai berry and flaxseeds are also good sources.

mrob 8y ago
The only good vegetable source of DHA is some types of algae. The foods you listed contain alpha-linolenic acid, which the human body can convert to EPA and then to DHA, but this is an inefficient process and might not always meet the full requirements for those longer chain omega-3 fatty acids. See: https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.pdf https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.p...
- zeroname 8y ago
  More bluntly, ALA supplementation doesn't work: https://www.ncbi.nlm.nih.gov/pubmed/19269799?dopt=Abstract https://www.ncbi.nlm.nih.gov/pubmed/19269799?dopt=Abstract
  - leekyle333 8y ago
    Walnuts also have a lot of Omega 6 which will lessen the conversion of Omega 3 into useable forms.
    - honzzz 8y ago
      Do I understand this correctly that if I consume a lot of Omega 6 (I love olive oil and nuts and consume large quantities of both) I might actually harm myself? Do I make Alzheimer disease more likely by Omega 6 rich diet? EDIT: I confused Omega 3 <> Omega 6, corrected.
WalterSear 8y ago
They aren't. In order to overcome the omega-6 metabolic preference, you need to consume, at a minimum twice as much omega-3 oils as omega-6, but actually closer to 4x. Twice as much omega-3 means eliminating olive oil, soy, most nuts, and many other foods. Or, alternatively, downing a pint or so of flax seed every day.
- gnulinux 8y ago
  Everything you said is true except I can't see how fish helps in this case. You still need to eat a lot of fish (especially since most fish are very low fat, salmon is a good choice) and cut Omega 6 sources, if you want to make Omega 3:Omega 6 ratio 2:1.
  - WalterSear 8y ago
    Algae, and the fish that live on it, don't provide omega-3 oils. They provide the fully formed end products, DHA and EPA, so the metabolic bottleneck is avoided.

mrob 8y ago

The only good vegetable source of DHA is some types of algae. The foods you listed contain alpha-linolenic acid, which the human body can convert to EPA and then to DHA, but this is an inefficient process and might not always meet the full requirements for those longer chain omega-3 fatty acids. See: https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.pdf https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.p...

zeroname 8y ago
More bluntly, ALA supplementation doesn't work: https://www.ncbi.nlm.nih.gov/pubmed/19269799?dopt=Abstract https://www.ncbi.nlm.nih.gov/pubmed/19269799?dopt=Abstract
- leekyle333 8y ago
  Walnuts also have a lot of Omega 6 which will lessen the conversion of Omega 3 into useable forms.
  - honzzz 8y ago
    Do I understand this correctly that if I consume a lot of Omega 6 (I love olive oil and nuts and consume large quantities of both) I might actually harm myself? Do I make Alzheimer disease more likely by Omega 6 rich diet? EDIT: I confused Omega 3 <> Omega 6, corrected.

WalterSear 8y ago

They aren't. In order to overcome the omega-6 metabolic preference, you need to consume, at a minimum twice as much omega-3 oils as omega-6, but actually closer to 4x. Twice as much omega-3 means eliminating olive oil, soy, most nuts, and many other foods. Or, alternatively, downing a pint or so of flax seed every day.

gnulinux 8y ago
Everything you said is true except I can't see how fish helps in this case. You still need to eat a lot of fish (especially since most fish are very low fat, salmon is a good choice) and cut Omega 6 sources, if you want to make Omega 3:Omega 6 ratio 2:1.
- WalterSear 8y ago
  Algae, and the fish that live on it, don't provide omega-3 oils. They provide the fully formed end products, DHA and EPA, so the metabolic bottleneck is avoided.