Lung cancer kills more women than any other cancer – nearly 200 women each day. Most die within a year of diagnosis. Yet lung cancer remains the “hidden” women’s cancer – little known and rarely discussed. It is the least funded cancer in terms of research dollars per death of all the major cancers, and one of the only cancers where patients are routinely blamed as responsible for their condition. To bring lung cancer “Out of the Shadows,” the Mary Horrigan Connors Center for Women’s Health and Gender Biology has developed this first comprehensive overview of women and lung cancer. The Women’s Health Policy and Advocacy Program gratefully acknowledges the Lung Cancer Alliance for its encouragement and assistance in this endeavor, and for its commitment to making this report a focal point for broader public health policy debate on women and lung cancer.