Cigarette smoke contains hundreds of toxic chemicals, about 70 of which can cause cancer. Listed among the 15 countries with the most smokers in the world, more secondhand smokers in Vietnam are suffering from fatal diseases. The woman is 25 years old. However, she is suffering from lung cancer, which she can hardly believe. Many lung cancer patients didn’t ever think they would catch lung cancer. Doctors from the National Hospital for Cancer and Tumor said 30-35 percent of cancer patients are female. Most of them are non-smokers but have relatives who smoke. Statistics in 2015 showed that in Vietnam, 28.5 million non-smokers were exposed to smoke. Smoke has become the cause of 30 non-infectious diseases. With this year’s World No Tobacco Day’s theme of “Tobacco – a threat to development,” the World Health Organization urged governments and the public to promote health and development by confronting the global tobacco crisis.-VNA