Todd writes:

[Well, walnut oil has  about a 5:1 ratio of omega-6 to omega-3
fats, which should be fine.  My impression is that the research
is inconclusive as to whether it's the ratios that matter or
whether you just need to make sure to get enough omega-3, in
absolute terms.]




Hi Todd and Dianne,

  My understanding is that ratios are important and should be no more than
4:1 (n3 to n6), and ideally 2:1 (n3 to n6).  SAD runs about 1:16 or more.

Below is a link to a site with an extensive article on fatty acids.  While
they draw a few conclusions with which I disagree, overall, the article is
factual.

http://www.metametrix.com/articles/artcl_caf.htm

Siobhan