Which is better, Krill oil, Cod liver oil or Fish oil?

Which is better, Fish Oil, Krill Oil, or Cod Liver Oil?

I found a very elaborate scientific study that showed that krill is slightly more effective than fish oil, but only slightly. If you were to have the same efficiency as PurePharma (i.e. 2000mg) you would then need 1256mg pure krill oil. However, krill oil has a lot less EPA & DHA per gram, which makes it a poor substitute. Fish oil is by far the best option. Krill fishing is also less environmentally safe and the amount of Krill in our oceans has declined by more than 70% since the 1970’s.

Progenex Omega+ has a total of 1000mg Omega-3/serving and it doesn’t state how much calamari oil and how much krill oil is actually in the product. For all we know it could be 99:1. Regardless, this product is FAR inferior to PurePharma. Also, why is it not 3rd party tested? It’s basically just a more expensive and less potent (and likely less clean and fresh) product.

Cod liver oil has excessively high levels of Vitamin A in relation and can prove to be toxic. In addition, the amount of Vitamin D is pretty low, so not really worth taking it for this reason. Instead consider taking PurePharma D3 for your daily dose of Vitamin D.

Furthermore, we as the human race has always consumed fish and not krill– we have evolved to what we are today over the past 1.5m years, consuming triglyceride-based fatty acids, and not phospho-lipids. The fish that we consumed ate krill, not us.

From the research:
The primary finding of the present study was that plasma concentrations of EPA, DPA, and DHA increased significantly in both the krill oil and fish oil groups compared with the control group following daily supplementation for 7 weeks. There was no statistically significant difference between these two groups in the levels of the increases in EPA and DHA. Since the subjects in the krill oil group received 62.8% of the total amount of n-3 PUFAs received by the subjects in the fish oil group, these findings indicate that the bioavailability of n-3 PUFAs from krill oil (mainly PL) is as, or possibly more, efficient as n-3 PUFA from fish oil (TG)

Full article:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024511/

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