Shifts in Modern Western Nutrition

Prior to 1800: Prior to 1800, ~ 20% of the western diet was fat and the amounts of omega-6 and omega -3 fatty acids was balanced ~1:1
Since 1800: Total fat in the diet has increased to over 30%, omega-6 fatty acids have increased and omega-3 fatty acids have decreased, driving the ratio to greater than 7:1 in favor of the mostly proinflammatory omega-6 fatty acids (Simopoulos. World Rev Nutri Diet, 2005,95:80-92)