What type of dietary fat is recommended to increase in a heart-healthy diet?

Increasing polyunsaturated fat in a heart-healthy diet is recommended because research shows that these types of fats can help reduce levels of low-density lipoprotein (LDL) cholesterol, commonly referred to as "bad cholesterol." Polyunsaturated fats, which include omega-3 and omega-6 fatty acids, are found in foods like fatty fish (such as salmon and mackerel), walnuts, flaxseeds, and certain vegetable oils (such as soybean and sunflower oil). Incorporating these fats can contribute to better overall heart health by improving lipid profiles and reducing inflammation.

In contrast, saturated fat is typically associated with increasing LDL cholesterol levels, and trans fats are known to be particularly harmful, raising LDL cholesterol and lowering high-density lipoprotein (HDL) cholesterol, the "good" cholesterol. Cholesterol itself, while necessary for the body, does not derive from dietary sources for individuals who are looking to promote heart health; rather, the focus is generally on managing the types of fats consumed to improve cardiovascular outcomes. Increasing polyunsaturated fats rather than the others is a key dietary recommendation for heart health.