Type 2 diabetes mellitus (T2DM) is a disease that interferes with the body's proper production and use of insulin, a hormone needed to convert sugar into usable energy. People with T2DM are at a higher risk for certain cardiovascular diseases, including heart disease and stroke. Normal treatments for T2DM target blood sugar levels only, but there is reason to believe that also targeting blood fat levels will improve both sugar metabolism and heart function in people with T2DM. This study will determine the effectiveness of blood-fat lowering treatments along with blood-sugar control treatments in improving heart function and symptoms of people with T2DM.