Healthy fats for the heart include monounsaturated and polyunsaturated fats, which can be found in foods like olive oil, avocados, and fatty fish. These fats can help improve cholesterol levels by decreasing LDL cholesterol while increasing HDL cholesterol. In contrast, saturated fats and trans fats should be limited, as they may increase heart disease risk. A balanced intake of healthy fats can promote overall cardiovascular health and reduce the risk of heart-related issues.