A few tweaks to your diet may be enough to lower your cholesterol to a healthy level and help you stay off medications. Consider adding these cholesterol-lowering foods to your diet: 1. Oatmeal and oat bran. 2. Walnuts, almonds and other nuts. 3. Fish, especially mackerel, lake trout, herring, sardines, albacore tuna and salmon. 4. Olive oil. 5. Foods fortified with plant sterols or stanols, such as margarines, orange juice and yogurt drinks.