Most that I've heard favor fish over flax... don't have references real handy. But if you're worried about stuff like mercury - isn't that said to be in the oil? Might read up on that if it is anything at all that you're iffy on.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.