Macro partitioning

When comparing high-monounsaturated fat diets directly to high-polyunsaturated fat diets, triglyceride levels are modestly but consistently lower on the polyunsaturated fat diet.

If your primary concern is lowering triglycerides (rather than LDL), choosing polyunsaturated oils (like corn, sunflower, or safflower oil) over monounsaturated oils (like olive oil) may provide a small additional benefit. However, for LDL cholesterol, both types of oils are equally effective when replacing saturated fat.