Sociology is the study of human social relationships and institutions. Sociologyâs subject matter is diverse, ranging from crime to religion, from the family to the state, from the divisions of race and social class to the shared beliefs of a common culture, and from social stability to radical change in whole societies.
Smoking leads to the lung disease, emphysema. In smokers, the presence of irritants in the mucus build up in the lungs and causes inflammation. A large number of phagocytic white blood cells migrate to the alveoli. The elastase produced by these cells breaks down elastin and other proteins in the wall of the alveoli.
Secondhand smoke is smoke that is exhaled by smokers and smoke emitted from the burning end of a lit cigarette, cigar, or pipe. It causes more than 7,000 lung cancer deaths each year in persons who do not smoke. It can also lead to lung conditions and heart disease.moking, including secondhand smoke, is the leading cause of lung cancer. Other cancers. Not only does smoking increase the risk of lung and oral cancer, it also increases the risk of other respiratory system cancers including cancer of the nose, sinuses, voice box, and throat.