Yeah the mediterranean diet generally refers to the Greek/Italian diet. France/Spain, although on the mediterranean, aren't included. And France's lower heart disease rates are usually attributed to wine drinking. But there are a lot of factors that go into heart disease, reservatol in wine is protective, DHA/EPA in fish is protective, exercise is protective, pythonutrients are protective, etc. And obviously their high level of gluten consumption doesn't hinder them.
I might have to give this one to Ian though
I always hated fish but I've definitely tried to get in DHA/EPA supplements in the last few years. The common theme for the countries with lowest mortality rates all seem to be heavy fish consumers. Japan, South Korea, France, Spain, Portugal, Israel, etc. Again there are other factors there as well.