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.
Northumberland County is a county located in the Commonwealth of Virginia. As of the 2010 census, the population was 12,330. Its county seat is Heathsville. The county is located on the Northern Neck and is part of the Northern Neck George Washington Birthplace AVA winemaking appellation.he area was occupied at the time of English settlement by the Algonquian-speaking historic tribes of the Wicocomico and Chickacoan. The county was created by the Virginia General Assembly in 1648 during a period of rapid population growth and geographic expansion.