The Beijing Health Bureau reported that the statistics collected by the Beijing Institute for Cancer Research affirmed that, in Beijing in 2010, lung cancer had the highest occurrence rate among male cancer patients and second highest among female cancer patients, second only to breast cancer. The lung cancer rate grew 56 percent from 2001 to 2010; it now accounts for one out of five cancer patients. In 2010 alone, the lung cancer mortality rate among Beijing city residents was 48.9 out of 100,000, the highest of all the cancer patients. Moreover, there was a sharp increase in lung cancer patients among adults 35 and older, with the male and female ratio at 172 versus 100. According to the Beijing Health Bureau, the main causes of lung cancer are smoking, followed by environmental pollution.
Source: Xinhua, November 25, 2012
http://news.xinhuanet.com/local/2012-11/25/c_113789743.htm