Omega 3s and the human brain are closely interlinked. You see, the human brain is made up of aproximatelly 60 % fats. Out of these 60 % about 50 % comprises of DHA, that is one of two fatty acids that our body needs.
The human body can't produce DHA and EPA, that are discovered in fish oils abundantly. This is the reason why industry experts and researchers all over the world are promoting that supplement with a top notch, ultra refined omega 3 fish oil.
You could easily get the omega-3 of yours from oily fish, but that poses the issue of heavy metal poisoning and contamination. A good deal of fish these days are swimming in unclean waters. You may wonder, doesn't which make the supplements bad too?
Not necessarily, when the fish are caught from a genuine source of energy and molecularly distilled to confirm pharmaceutical grade purity, they are much safer to consume than fatty fish.
A lot of companies however use the entire fish in the pressing process. What this means is that they use the liver of the fish, which is loaded with contaminants that then find the way of theirs into the omega 3 nutritional supplements.
This's why you want to make certain that the companies are using a brand name that knows what they're doing. Many organizations will save on costs, which leads to low quality products.
The nice thing is that they are easily avoidable whenever you learn things to hunt for. I always want to see clinical trials and independent reviews done on the products I am about to buy. I want to see proof of the exipure effectiveness.

A current medical trial found out that an innovative combination of hoki and tuna oil in the same device increases the health benefits by as much as 2 1/2 times in comparison with other omega-3 nutritional supplements available nowadays.