If you have high cholesterol, you should try a low LDL diet to reduce your risk of heart disease. You can start by increasing your intake of fiber. It works like a sponge and soaks up cholesterol before your digestive tract can release it to your body. Dairy products help you reduce your LDL by reducing your body's ability to absorb fat. Regular dairy products work just as well as the low-fat versions. Healthy fats that come from oily fish and nuts are important LDL fighters. Diets with adequate fiber, dairy products and good fats can lower LDL levels.