While researching I found out that the linoleic acid is 4x mre prone to oxidation than oleic acid. Linolenic acid with its 3 double bound is 9 times more prone to oxidation than oleic. Where would a DHA with its 6 double bond land, like 36x or mybe even 100x more prone to oxidation. Damn that is very very toxic. There are people still pushing cod liver oil not to mention even regular fish oil. Even if the cod liver oil is 25% Epa and DHA that would equal for 1 gram of those two like at least 9 grams of regular seed oil linoleic acid. Not to menton that the DHA could act like a "exploding bomb in a warehouse" of other highly vulnerable unsaturated fatty acids in the body. Funny thing is that wikipedia site about linseed oil mentions it oxidizing so quickly it heats up and can even go on fire. Cod liver oil not safe and the funny thing is that the refining to remove the heavy metals destroys all the vitamin D and A and they add synthetic ones back in. Maybe a shot od radioactive isotope talium with some vitamin A and D will become popular in the future, maybe radioation will came back in fashion since Ray Peat mentioned that x-rays were popular in the 50s. X-ray and fish oil have the same effect.