A healthy diet can't cure or treat lung cancer, but it may lower your risk of developing the disease and help manage your symptoms once you have it. Eating well can also improve the effectiveness of certain cancer treatments and guard against side effects, such as undesirable weight loss. Your dietary needs will probably change over time, according to the American Lung Association, so discuss your eating habits and related concerns with your doctor.
Colorful Fruits and Veggies
Antioxidants support your body's ability to fight and heal from disease. Low concentrations of certain antioxidants, including vitamins A and C, have been linked with an increased risk for lung cancer, according to the University of Maryland Medical Center. When you have lung cancer, eating antioxidant-rich foods could help reduce symptoms. While most fruits and vegetables provide some amount of antioxidants, colorful varieties, such as tomatoes, berries, winter squash and bell peppers, are particularly rich. Fruits and vegetables also provide healthier sources of carbohydrates -- your body's main energy source -- than refined foods, such as candy and pastries.