Not sure how I missed this One. A very good presentation.

When I went down the rabbit hole a couple summers ago looking at ALA, EPA, DHA, it became clear that plant source was of little value because humans cannot convert it to PEA and DHA in a meaningful amount. Ruminant animals can. And fish as well.

Grassfed beef has far better ratios, 1:4 which IMO is far better than grain fed. When grassfed stock is brought in for fattening, by three months on grain the ratios of the omegas has changed for the worse.

I did find my ruminant nutrition book, but haven't made time to relearn the material. I would like to understand if us humans are able to increase conversion of ALA to DHAand EPA.

I buy only small fatty fish because of the heavy metal concentrations in larger fish. Sprats and sardines. We tried one brand of cod liver oil and gave up gagging it down. Dogs enjoyed it. Pill form is treated to remove heavy metals.

I have wondered how a keto diet can keep the ratios balanced. It would take grass fed fats, imo.