Peter of Hyperlipid thinks that the vitamin A and D3 in cod liver oil may offset any problems from excess omega 3 polyunsaturated fats (which is probably only a potential problem anyway if your omega 6 intake is low in comparison--which is true for some of us here). None of the studies and claims of problems with fish oil investigated raw cod liver oil.
In general, it's more important to focus on nutrient balance than on whether a nutrient like omega 3s or omega 6s is inherently "good" or "bad." Most Americans have very high levels of omega 6s and very low levels of omega 3s in their diet, which explains why so many people (including myself in the past) experience benefits when they increase their omega 3 intake and decrease their omega 6 intake (thus restoring the natural balance that exists among all hunter gatherers). The potential problems with fish oil appear to have more to do with excessive imbalance vs. omega 6s and processing techniques than with inherent problems in fish oil. Some of the alternative foods that were recommended by fish oil critics are far, far worse--neither raw nor Paleo (whereas Blue Ice CLO is essentially both, although whole raw fatty fish--including the livers--would be even more Paleo)--so those "experts" who have criticized fish oil and offered non-RPD foods as alternatives lack credibility since they obviously have little inkling as to which foods are actually healthy or why. Of course, those experts would disagree with us, because they don't believe that RPD is the optimal type of diet.
No offense, Diana, but you've been asking a lot of questions that have been thoroughly answered in the past in this forum, so I highly recommend that you search the forum and read as much of the past posts as possible. Tyler has posted answers on fish oil and Lex has posted tons of stuff on his all-meat/fat/organ diet, bone density, problems with vegan diets, etc. I have posted stuff on vitamins A, D3 and K2, including a thread devoted to it. After you read what we've posted, I'd be happy to answer any questions you still have.
