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.
McDowell County is a county in the U.S. state of West Virginia. As of the 2010 census, the population was 22,113. Its county seat is Welch. McDowell county is the southernmost county in the state. It was created in 1858 by the Virginia General Assembly and named for Virginia Governor James McDowell. It became a part of West Virginia in 1863, when several counties seceded from the state of Virginia during the American Civil War.