Here are a few references. These are recent open access articles covering the topic fairly broadly. Tons more out there, it's a big and important area of research.
Tani S1, Takahashi A, Nagao K, Hirayama A, Association of Fish Consumption-Derived Ratio of Serum n-3 to n-6 Polyunsaturated Fatty Acids and Cardiovascular Risk With the Prevalence of Coronary Artery Disease.http://www.ncbi.nlm.nih.gov/pubmed/25902881
Khan SA, Ali A, Khan SA, Zahran SA, Damanhouri G, Azhar E, Qadri I, Unraveling the complex relationship triad between lipids, obesity, and inflammation.http://www.ncbi.nlm.nih.gov/pubmed/25258478
Artemis P. Simopoulos, An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4808858/
Tani S1, Takahashi A, Nagao K, Hirayama A, Association of Fish Consumption-Derived Ratio of Serum n-3 to n-6 Polyunsaturated Fatty Acids and Cardiovascular Risk With the Prevalence of Coronary Artery Disease. http://www.ncbi.nlm.nih.gov/pubmed/25902881
Khan SA, Ali A, Khan SA, Zahran SA, Damanhouri G, Azhar E, Qadri I, Unraveling the complex relationship triad between lipids, obesity, and inflammation. http://www.ncbi.nlm.nih.gov/pubmed/25258478