According to the renowned research scientist and inventor of the Z one Diet Plan Dr. Barry Sears, studies are increasingly focusing on high dose fish oil.
it has been looked at with more intensity ever since the Greenland Eskimos were analyzed by Danish and other European doctors in the 1970's. They wanted to know why the greenlanders suffered very little in the way of heart disease-even though they had a lot of fat in their diets.
Fish oil effects a specific set of hormones. The more fish oil that is consumed, broadly speaking, the more "good" and the less "bad" eicosanoids (a certain type of hormone) an individual will have in their body. A key for 21st century medicine will be to balance these hormones as much as possible.
http://healthmagazinehouse.com/new-facts-about-fish-oil/