Smoke and soot pollutes indoor air

Experts pointed out that my country has an atlas of the incidence of cancer, especially lung cancer. In Northeast and North China, heating in winter, coupled with moderate and severe air pollution in some areas, the incidence of lung cancer is still relatively high. Taking lung cancer as an example, among the risk factors for lung cancer, smoking and air pollution account for 22%, lung and bronchial lesions, occupational factors, and genetic factors account for about 12%-15%, and mental factors and age account for 8% and 5%, respectively. %.

Experts pointed out that the air pollution mentioned above is two concepts, one is air pollution, and the other is indoor air pollution. Outdoor air pollution people can hide indoors, but indoor air pollution is difficult to avoid. For example, smoke includes second-hand smoke and third-hand smoke, which is also an important factor in PM2.5.

In addition, the ventilation of the kitchen in winter will also be reduced, and the kitchen fume pollution caused by Chinese-style cooking, frying and roasting also threatens the indoor air in winter. There are also unreasonable installation of family range hoods. You must know that the effective height of the range hood is 90 cm. For the sake of beauty, some families have raised the range hood, which cannot fully play a role. In addition, some families wait until the oil pan starts to smoke before turning on the range hood, and then turn it off just after cooking, which cannot effectively remove the oil fume.

Ventilation and green plants help to purify the air

Experts remind that to reduce indoor air pollution in winter, in addition to smoking, you can plant more green plants indoors, and open windows for ventilation every day when the temperature is relatively high at noon. At this time, you should pay attention to keeping warm. It is best for the elderly and children with weak constitutions to change to other rooms.

Experts also remind that if you live in a high-risk area of ​​lung cancer or belong to a high-risk group, if you have a family history of cancer or occupational risk factors, you should have a physical examination every year. Chest X-ray cannot detect early-stage lung cancer, and low-dose helical CT should be used. He Baoming, chief physician of the 309th Hospital of PLA General Hospital, pointed out that for lung cancer, PET/CT can detect tumors about a year earlier than routine examinations in terms of early diagnosis, and can already detect tumors with a size of 0.5mm. Many tumors can be diagnosed early and gain valuable treatment time. Experts also remind that if there is an irritating cough, blood in the sputum, or bloody sputum, be alert to lung cancer.