Which type of cancer is the leading cause of cancer deaths among women in the United States?

Lung cancer is the leading cause of cancer deaths among women in the United States. This is largely due to several factors, including the fact that lung cancer is often diagnosed at a later stage when it is more difficult to treat effectively. The high mortality rate associated with lung cancer is also related to the prevalence of smoking, which is a significant risk factor.

In contrast, while breast cancer is commonly diagnosed in women and has significant visibility, advancements in early detection and treatment have improved survival rates considerably. Colon cancer, although serious, does not account for as many cancer-related deaths in women as lung cancer does. Heart disease is a significant health concern, but it falls outside the category of cancer-related mortality. Thus, lung cancer stands out as the most lethal type of cancer affecting women in the U.S.