Decline of pulmonary function.
Pulmonary function declines with normal aging, but environmental pollutants such as cigarette smoke undoubtedly hasten the process--probably by triggering inherent deficiencies or irritating endogenous changes.
D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006339:Heart Rate; D006801:Humans; D008168:Lung / Q000502:physiology*; D008171:Lung Diseases / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D012737:Sex Factors; D012907:Smoking / Q000150:complications / Q000503:physiopathology