Today is World No Tobacco Day. Data show that more than 300 million and 740 million Chinese smokers are endangered by second-hand smoke. Although many cities across the country have issued local laws and regulations prohibiting smoking in public places, there is still a regulatory 'dead corner' in urban tobacco control.
What are the hazards of second-hand smoke?
The latest research report published by medical researchers points out that 'second-hand smoke' is more dangerous than the first-hand smoke:
1. Some women living with smokers are 2.6 to 6 times more likely to suffer from lung cancer than the average person.
2. Children under the age of 16 in smoking families suffer from respiratory diseases more than those in non-smoking families. For children under 5 years old, 33.5% of non-smoking families have respiratory symptoms, while 44.5% of smoking families have respiratory symptoms.
3. In addition, in addition to cancer, smoking women are 2-3 times more likely to give birth to abnormal babies than non-smoking women.
4. Statistics on the prevalence factors of childhood leukemia show that more than 60% of families with leukemia have second-hand smoke pollution. It shows that smoking plays an important role in the pathogenic factors of leukemia.
5. Smoking increases the probability of thrombosis and the increase of acidic substances such as carbon dioxide in smokers, which affects the permeability and deformation ability of erythrocyte membrane, resulting in a large number of aggregation of red blood cells and platelets and increased blood viscosity. Secondhand smoke leads to a significant increase in the incidence of coronary heart disease, ischemic stroke and peripheral vascular diseases.
6. The survey found that smokers damage their hearing, and 14% of those who are often exposed to second-hand smoke are prone to low and medium frequency hearing loss. More than 46% will have a high frequency of hearing loss.
7. Second hand smoke increases the risk of uterine cancer. Women exposed to second-hand smoke are 2.73 times more likely to get cervical precancerous lesions than those not exposed; If the number of second-hand smoke exposure exceeds 10 per day, the risk ratio increases to 3.97 times.
8. Long term secondhand smoke is a common cause of chronic pharyngitis. Tar, nicotine and other harmful substances in the smoke can inhibit the activity of respiratory cilia, weaken the purification ability of respiratory tract, and cause congestion and edema of bronchial mucosa, so as to make external pathogens enter the bronchus and cause repeated infection in this part, leading to chronic pharyngitis.