SN Instructed patient and caregiver on good fats vs bad fats basically. There are two groups of fats: saturated and unsaturated. Within each group are several more types of fats. The unsaturated fats. Unsaturated fats include polyunsaturated fatty acids and monounsaturated fats. Both mono and polyunsaturated fats, when eaten in moderation and used to replace saturated or trans fats, can help lower cholesterol levels and reduce your risk of heart disease, Polyunsaturated fats, found mostly in vegetable oils, help lower both blood cholesterol levels and triglyceride levels, especially when you substitute them for saturated fats. One type of polyunsaturated fat is omega - 3 fatty acids.