Research Progress on Risk Factors for Lung Cancer in Nonsmokers

Lung cancer has become an important killer to threaten human health. Even though smoking has become a recognized risk factor for lung cancer, a growing number of nonsmokers suffer from lung cancer. Therefore, the research of the risk factors for the occurrence and development of lung cancer in nonsmokers is of great significance for the prevention and treatment of lung cancer. The purpose of this review is to provide the cause evidence and theoretical support for future control strategies of lung cancer.