Diseases caused by smoking
The International Association for the Study of Cancer (IARC) has created a carcinogenic agents classification list. Carcinogens promote the regeneration of healthy cells into cancerous ones. The classification consists of 4 categories depending on the degree of carcinogenic effect. Tobacco is in the 1st (the most dangerous) category. Tobacco includes 4,000 chemical compounds, carcinogenic gases, nicotine, water and tobacco tar. Smokers face a lot of malignant formations. How, for example, a...

