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Smog and cancer
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AROUND 36,000 residents in Shanghai die of malignant tumors every year, and the number one killer is lung cancer, it was disclosed on Tuesday.
According to Wu Fan, director of the city’s Center for Disease Control, compared with women and younger men, males above 65 have a much higher chance of suffering lung cancer, mostly because they smoke. Although PM2.5 particles endanger public health, Wu dismissed it as a proven culprit in lung cancer, for the time being. “Many people attribute lung cancer to smog, but why does lung cancer happen to men more often than women now that all people breathe the same air? The answer lies in smoking,” Wu explained.
Chen Haiquan, a medical expert, said the causal relationship between smoking and lung cancer is quite certain, while that between smog — a relatively new phenomenon — requires more study.
Their message: People should reduce or quit smoking, and the government should study more the impact of smog on health.
Smog research is essential because it affects everyone, whether or not they smoke. Clearly smog is unhealthy and prolonged exposures causes problems; there is reason to fear it may be linked with cancer.
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