The book “Death by Food Pyramid” outlines a study done a few decades ago which looked at healthy ‘native’ cultures to see how they ate… they all had good sources of saturated fat. From whale and seal fat, to coconut and palm oils, to fatty fish, olive oil, and my favorite – Swiss grass-fed cow butter. :)
The book pokes holes in a number of other studies which promote low-fat living as ‘heart healthy’. I thought it was a good read. I’m sure it left a lot out – but it did help to fill in some holes in the picture in my own mind.