Two independent studies of fish oil or omega-3 fatty acids came to similar conclusions. Heart attacks and strokes are significantly reduced. And mortality in the group that used fish oil supplementation was also significantly reduced.
Below are the results of the study showing what fish oil did (according to British Medical Journal)
And... Mayo Clinic study (according to Mayo Clinic Proceedings)
So, the end result is that you live a healthier life. Omega-3 Yes? No?
You decide.