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.
Alleghany County is an American county located on the far western edge of Commonwealth of Virginia. It is bordered by the Allegheny Mountains, from which the county derives its name, and it is the northernmost part of the Roanoke Region of Virginia. The county seat is Covington. The county was created in 1822 from parts of Botetourt County, Bath County, and Monroe County (now in West Virginia). At the time, the majority of the population lived around Covington, and the primary cash crop then was hemp, which was used for rope production.