It is good for the heart, especially the triglycerides. As well, you may find it good for your stools. I know mine solidified even more after beginning to take it.As far as pollution, I am not prepared to comment. I suppose it would depend upon the source--farmed vs wild salmon. Since the wild salmon spend most of their lives in the ocean, their exposure to pollutants ought to be reduced over those raised in costal waters and packed into netted cages.One of the women from the Dr. D Thread (maybe Daisysp, perhaps another) has found a number of her clients have also reduced their cholesterol with it. The particular supp I take combines plant phytosterols--which need a source of fat to work--with omega 3 to block the cholesterol in the gut. Both my triglycerides and my cholesterol dropped so signifigantly that my doctor thought I was self prescribing Lipitor.Good luck.Mark