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Cigarette smoking is the drawing of smoke into the mouth and the lungs from burning tobacco (West and Shiffman, 2016). Cigarette smoking causes deficit in FEV/FVC ratio which indicate airway obstruction and small airway disease in adult smokers(Zamel, 1983). The aim of this study was to determine the effects of cigarette smoking on lung function among chronic smokers and acute smokers. A total number of 60 subjects within the age range of 18-30 years. 20 subjects were used as control (non-smokers), 20 subjects were used as acute smokers and 20 subjects were used as chronic smokers. The subjects were seated and were seated and asked to inhale fully then blow into a spirometer forcefully for several seconds. The process were carried out three times to obtain a consecutive consistent result and in cases of much variant, the whole processes were repeated. It was study it was observed that there was significant decrease in the FEV1/FVC ratio of acute (0.8564±0.025) and chronic smokers (0.6489±0.034) when compared to control (0.8516±0.034). I'm conclusion cigarette smoking are seen among smokers in this study, showed that there is a significant reduction in the FEV1/FVC ratio of chronic smokers when compared with control and this reduction was statistically significant but no reduction in acute smokers when compared to control, this shows that cigarette smoking may be detrimental to respiratory system.
