41 All Natural Lung Cancer Meal Recipes: Cancer-Fighting Foods That Will Help You Stimulate Your Immune System By Joe Correa CSN To avoid lung cancer, good nutrition is a key factor and foods such as collard greens, broccoli, orange juice and seafood (especially cod) are the key ingredients. These foods in particular will help to give you the necessary nutrients and minerals that are helpful in preventing lung cancer. Collard green leaves are full of sulfur containing compounds that support detoxification. Broccoli. Broccoli is the only vegetable with a sizable amount of sulforaphane, a particularly potent compound that boosts the body's protective enzymes and flushes out cancer-causing chemicals. The National Cancer Institute even calls oranges a complete package of every natural anticancer inhibitor known. Limonene in oranges stimulates our antioxidant detoxification enzyme system, thus helping to prevent and stop cancer. While we often think of milk having vitamin D, we can also find high amounts in shrimp, salmon, and cod. Another good source are eggs. Cod-liver oil is very rich in vitamin D -- a nutritional element that is very important for slowing the growth of tumors and supporting the immune system -- and also in long-chain omega-3 fatty acids that are commonly found in oily fish. Omega-3 fats are healthy fats that also have protective properties against cancer.