Fish Oil and Flax

Notice a lot of people talking about flax and fish oil. Just trying to get the when/ why and how much about this stuff. Thanks

from this article:

http://t-nation.com/readTopic.do?id=622578

10 capsules amounting to 3g of EPA+DHA, although, from the same article, some people recommend “6-10 g daily EPA + DHA.”