While there’s no single cause of lung cancer in nonsmoking females, research suggests that a combination of toxin exposure, genetics, and hormones may play a role.

Tobacco smoking continues to account for most lung cancer cases and 80% of related deaths. But even if you don’t have a history of smoking, you might develop lung cancer. In fact, lung cancer rates are rising in nonsmokers — particularly females.

Research suggests that while smoking rates are decreasing…