The  January/February 2016  Journal of Clinical Lipidology [lipids are fats that float in the bloodstream, some line the blood vessel walls as dangerous plaque] reported on a meta-analysis of 10 studies with 229 subjects who replaced saturated dietary fat [butter, lard, mayonnaise, cheeses] with avocados.  This substitution resulted in a significant reduction of total cholesterol, LDL [“bad”] cholesterol, […]