When you eat a salad, put your dressing on the side for dipping your fork. Most of the calories in a salad come from the salad dressing that is poured on top. If you put the dressing on the side instead, and put a little bit on your fork before you pick up a bite of salad, you will still get the flavor of the dressing without using a lot of dressing. This will really cut down on the calories consumed.
For cancer prevention, try adding more plants to your daily diet. These are versatile enough to go anywhere from a salad to a soup to a stew to even a smoothie. Try eating green things like lettuce, spinach, broccoli, asparagus and more to get a vast array of nutrients. Also, add things like fruits and nuts for a huge boost to prevent cancer.