Emphysema Causes. Cigarette smoking is by far the most dangerous behavior that causes people to develop emphysema, and it is also the most preventable cause. Other risk factors include a deficiency of an enzyme called alpha-1-antitrypsin, air pollution, airway reactivity, heredity, male sex, and age. The importance of cigarette smoking as a risk factor for developing emphysema cannot be overemphasized. Cigarette smoke contributes to this disease process in two ways.
Northern Virginia map - Virginia county, city, map with roads. Arlington County, Alexandria City. Arlington and the city of Alexandria Virginia are close to Washington DC, inside the beltway.
Overview of South Riding. South Riding, Va., is situated in the south-east region of the state, approximately 28 miles west of Washington, D.C. It has a population of approximately 24,200 and is a planned community in Loudoun County. People looking for South Riding apartments for rent will find a quiet, affluent area that's perfect for raising a family.