I don't know what to think right now. I heard about a new study showing that fish oil is useless and as I was googling for it I found all these studies saying that fish oil and generally unsaturated fats are bad.
This article says that unsaturated fats are very vulnerable to heat and oxidation and that within the human body it's too hot which will cause the unsaturated fat to oxidize. This would mean that taking fish oil would cause more oxidation.
And this article here seems to claim that fish oil can cause alzheimer disease.
I have been taking fish oil daily for many years now and thought that this is good and now I wonder what if the fish oil turns rancid once it's in the body?