英语小短文

Lung cancer is responsible for the most cancer deaths in both men and women throughout the world. The American Cancer Society estimates that 213,380 new cases of lung cancer in the U.S. will be diagnosed and 160,390 deaths due to lung cancer will occur in 2007. Lung cancer is predominantly a disease of the elderly; almost 70% of people diagnosed with the condition are over 65 years of age, while less than 3% of cases occur in people under age 45.

Lung cancer was not common prior to the 1930s but increased dramatically over the following decades as tobacco smoking increased. In many developing countries, the incidence of lung cancer is beginning to fall following public education about the dangers of cigarette smoking and effective smoking-cessation programs. Nevertheless, lung cancer remains among the most common types of cancers in both men and women worldwide.

Lung cancer has also surpassed breast cancer in causing the most cancer-related deaths in women in the United States.