Several studies indicate that stearic acid has a neutral effect on blood lipids. However, stearic acid may activate clotting factor VII, may increase lipoprotein Lp(a) concentration and may impair blood clot break down (fibrinolysis) (AJCN 1999; 70: 951). However, cocoa butter appears to decrease platelet activity, potentially beneficial for cardiovascular health. Stearic acid can be found in meat fat, some margarines, and chocolate.