At breakfast time (the most important time to be eating) a hearty bowl of porridge oats will reduce cholesterol. Generally speaking, consuming 5 to 10 grams or more of soluable fibre a day will be effective. Ideally, steel cut oats have been found to be more effective than rolled outs because they are far less processed during their manufacture. Here is some good info you may find useful. Steel Cut Oats vs. Rolled Oats: Which Is Healthier?