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.
Lung cancer and may occur even in people who have never smoke, and in fact, the majority (around 80 percent) of people who develop lung cancer at this time do not smoke; they are either former smokers or never smoked. 1  At least 20 percent of women who develop lung cancer have never smoked a cigarette.