I thought some of you might be interested in this: 

http://www.ncbi.nlm.nih.gov/pubmed/23659447

Someone who wanted to test their omega 6 to omega 3 ratio could do so through an "Esssential Fatty Acid Profile" test: http://www.mayomedicallaboratories.com/test-catalog/Overview/82426

You don't need to by at Mayo to do this test; your doctor can order it as a reference test.  I did it and it was not difficult -- though my doctor had never ordered the test before, as best I could tell.

The typical American diet tends to result in a high Omega 6 to Omega 3 ratio -- but modifications to diet can alter the ratio substatially, as can Omega 3 supplementation (ie, fish oil).

 

Thanks for the article.

This idea was a central thesis of the book "Anticancer".

Medved,

There was a meta-analysis of all the research done on these fatty acids that you can read here:

Relationship of dietary intake of omega-3 and omega-6 Fatty acids with risk of prostate cancer development: a meta-analysis of prospective studies and review of literature.

the authors said...
Dietary intake of omega-3 fatty acids and omega-6 fatty acids is not significantly associated with risk of prostate cancer, either local or advanced stage or low- or high-grade tumors, and prostate cancer specific mortality. Components of omega-6 fatty acids showed no significant association to prostate cancer risk. High dietary intake of alpha-linolenic acid may significantly reduce prostate cancer risk. Intake of long-chain omega-3 fatty acids does not have a significant effect. More good quality research is needed in determining effect of long-chain omega-3 fatty acids on prostate cancer incidence, grade, and specific mortality.

This speaks more to the lack of quality research about this than anything else.

That said, there is some evidence that the omega-3 to omega-6 ratio is important in preventing cardiovascular disease. Since CV disease is over 20 times the killer that PC is, that alone compels me to increase the amount and ratio of omega-3s in my diet. I think if we all eat heart-healthy diets, it will help the prostate as well. Now I'm going to have an ahi salad.