Date:09.03.2017, 15:26 1 In nonsmokers, important lung cancer risk factors are exposure to secondhand smoke, exposure to ionizing radiation, and occupational exposure to lung carcinogens, such as asbestos. Radiation exposures relevant to the general population include environmental exposure to radon and radiation exposures administered in the medical care setting, particularly when administered at high doses, such as radiation therapy to the chest. Compared with nonsmokers not exposed to secondhand smoke, nonsmokers exposed to secondhand smoke have approximately a 20 increased risk of lung cancer. Study Design: Prospective cohort and case-control studies. Internal Validity: Good. Lung cancer is more common in men than women and in those of lower socioeconomic status. Patterns of lung cancer according to demographic characteristics tend to be strongly correlated with historical patterns of cigarette smoking prevalence. Eat less meat, more fish! High fiber diet reduces colorectal cancer risk Fruits and Vegetables protective overall against cancer Nutrition and Cancer: First Results of the EPIC Study Research Highlights Serum B Vitamin Levels and Risk of Lung Cancer Association between pre-diagnostic circulating vitamin D concentration and risk of colorectal cancer in European populations: a nested case-control study Nutrient Intakes. You are here: Home / Research / Research Topics You are here: Home / Research / Research Topics. GLOBOCAN Major Cancer Types Breast Cervix uteri Colorectum. Liver Lung Oesophagus Prostate Stomach All cancers excl.