SAN FRANCISCO, July 31 /PRNewswire-FirstCall/ -- AstraZeneca (NYSE: AZN - News) today announced that the 2009 US AGAINST ATHERO tour is in the San Francisco Bay Area from August 1-9 for the National Senior Games, the largest multisport event in the world for people over 50 years of age, to help educate attendees about atherosclerosis (“athero” for short) -- the progressive buildup of plaque in the arteries and a leading cause of coronary heart disease (CHD). CHD is the number one cause of death in the United States.(1)