According to a new study, about 4.3 million people were diagnosed with cancer in China last year and another 2.8 million died of the disease, the BBC reports. Researchers say chronic infections, smoking and pollution are all contributing to the rapid rise in cancer cases in China. In other words, 12,000 people are diagnosed with cancer every day and 7,500 patients die from the disease. More than 80% of lung cancers are related to smoking. Currently, the number of smokers in China has exceeded 300 million, and the number of people exposed to secondhand smoke is as high as 740 million, with more than 1 million people dying each year from smoking-related diseases such as lung cancer, of which 80% of lung cancers in men and 19.3% in women are attributable to smoking. Some data show that the incidence of lung cancer among smokers is more than 10 times higher than among nonsmokers, and that inhaling secondhand smoke (passive smoking) among nonsmokers also increases the risk of developing lung cancer.