> I think in terms of what is economical for food production and what is bioavailable to human eaters I've been taking Algae based DHA supplements for a while.

> I think in terms of what is economical for food production and what is bioavailable to human eaters I've been taking Algae based DHA supplements for a while. The consensus seems to be that it should work just as well as DHA from fish oil but so far there are no studies using this form so it isn't 100% certain. The cost is somewhat more than fish oil (maybe 2 or 3 times the prices) although I'm sure that is mostly because it is a niche product. There are also version with both DHA and EPA but they are a fair bit more expensive and the conversion of ALA to EPA is generally viewed as good enough for flax seed oil to be used for EPA.