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.
North Potomac is a census-designated place and an unincorporated area in Montgomery County, Maryland, United States. North Potomac was also named the 16th most affluent U.S. neighborhood by Forbes in 2008. North Potomac was created in 1988 from the peripheral fringes of Gaithersburg, Potomac, and Rockville, and lies parallel to the Potomac River. North Potomac shares ZIP codes with Gaithersburg, Potomac, and Rockville.