Watch for meat preserved with nitrite as well. In Canada, vitamin C is added to reduce the cancer risk in these foods. Avoid charring or deep browning your food. For one, you can get more of vitamins E, C, A and beta-carotene . These are found in many vegetables, fruits and grain products.
Antioxidants prevent and destroy compounds called free radicals.
If free radicals are not destroyed by an antioxidant, they can damage cells and start the cancer process. As it says in the section above, avoid deep browning or charring your meat. These are cancer causing chemicals that come from cooking at high temperatures. If you do want to barbecue your food, cook it slowly. Keep food as far from hot coals as possible.