Here are four papers (three downloads and one link) by Artemis P. Simopoulos, M.D., President, The Center for Genetics, Nutrition and Health, Washington, DC.  She says things like; “Today industrialized societies are characterized by (1) an increase in energy intake and decrease in energy expenditure; (2) an increase in saturated fat, omega-6 fatty acids and trans fatty acids (partially hydrogenated oils), and a decrease in omega-3 fatty acid intake; (3) a decrease in complex carbohydrates and fiber; (4) an increase in cereal grains and a decrease in fruits and vegetables; and (5) a decrease in protein, antioxidants and calcium intake.” 

Essential Fatty Acids in Health and Chronic Disease
The Importance of Omega-6/Omega-3 Essential Fatty Acid Ratio
Omega-3 Fatty Acids in Inflammation and Autoimmune Diseases
Omega-3 Fatty Acids in Health and Disease and in Growth and Development