Dietary (n-3)/(n-6) Fatty Acid Ratio: Possible Relationship to Premenopausal Breast Cancer Risk
Many researchers believe that the healthiest ratio of omega-3 to omega-6 fatty acids is one to one, one to two (twice as many omega-6) at the most. Traditional standard American diet (read: SAD) is closer to 1 to 20 (twenty times omega-6) which leads to a pro-inflammatory profile of cytokines. This will lead to increased inflammation, and since inflammation has been tied to just about every chronic disease known to man, the results of this study are not a surprise.
nutrition.org — Abstracts: Goodstine et al. 133 (5): 1409