The type of fat considered heart-healthy and that helps reduce cholesterol levels is monounsaturated fat. Found in foods such as olive oil, avocados, and nuts, monounsaturated fats can improve heart health by lowering bad cholesterol (LDL) levels while raising good cholesterol (HDL) levels. Regular consumption of these fats, as part of a balanced diet, can reduce the risk of cardiovascular disease and support overall heart function.