O-3s have been proven to reduce stress and anger! Believe that? From a study on it in Norway. So I guess regardless of what this- now 11 year old study- had to say on the issue, it is likely quite beneficial if you lack adequate amounts in your normal diet.

You can easily get adequate amounts by eating the right foods, namely fish and nuts. But you don't have to eat those things if you don't like them and can take krill oil pills or something.

Supplements aren't created equal. It is important to verify the ones you take are from legitimate brands with 3rd party testing. It's a huge industry and that means fraud.

It's also life today in the world where olive oil, maple syrup and honey are often fake. And guess what!? That fake olive oil made with rapeseed/"vegetable" oil isn't great for you either. There aren't many people making sure that stuff is real either.