This is not actually crazy. The prevalence of alcoholism is inversely related to how long most of your ancestors have been farming. And within Europe, the north

This is not actually crazy. The prevalence of alcoholism is inversely related to how long most of your ancestors have been farming. And within Europe, the northerners have much more descent from the Indo-European invaders, compared to Mediterranean people -- this used to be a guess but we now have solid genetics. And we have known for much longer (from reconstructing their language) that the invaders had cows but not agriculture, before spreading out.