Follow the Inuit diet

Actually I avoid all vegetable source oil because they are high in Omega 6 which some studies suggest are a cancer causing oil (in spite of the Budwig fans).  The Inuit in their native diets ate nothing but fish and animal fats - in huge quantities.  In fact, one of their "deserts" was whipped whale blubber with summertime berries thrown in sans sugar.  They had virtually no cancer nor heart disease and died primarily from contact with Caucasians who brought in their usual communicable diseases, and of course their horrible diets too.