Rosalind Prophet Brannigan, 63, a public health analyst active in AIDS and substance abuse issues, died of lung cancer Aug. 19 at her home in Arlington.

Mrs. Brannigan worked most recently as a lung cancer awareness advocate. For 11 years until 2003, she was vice president of Drug Strategies, a policy research institute where she helped produce science-based guides on how to deal with substance abuse, and she also conducted seminars on the topic for the National Association of Broadcasters, the National Governors Association and other organizations.

Previously, she was director of the Workplace Resource Center at the National Leadership Coalition on AIDS, a Washington organization of business and labor groups.

A native of East Lansing, Mich., she graduated from Michigan State University and became a Peace Corps volunteer in Uganda.

Upon her return to the United States, she established a racially integrated recreation and cultural program for more than 300 rural youths in The Plains, Va.

Look magazine featured her in a 1970 article that highlighted the accomplishments of seven Americans younger than 30, along with boxer Muhammad Ali, singer Joan Baez, civil rights activist Julian Bond, war protester Sam Brown, alternative-medicine doctor Andrew Weil and Rolling Stone publisher Jann Wenner.

"I am discouraged that only the government seems capable of putting volunteers to work but then is so unresponsive to their ideas," she told the magazine. "Yet volunteers could force changes that the country really needs."

In the early 1970s, she joined the U.S. Office of Economic Opportunity, where she supervised multimillion-dollar grants to combat substance abuse in the South Bronx, on Indian reservations and in South Carolina prisons. She married a network television correspondent in 1972 and moved to Kenya, where she taught at the University of Nairobi's Institute of Adult Studies, and then moved to Egypt, where she studied at the American University of Cairo.

Back in the United States, Mrs. Brannigan received a master's degree in public health from Johns Hopkins University in 1987 and then joined the National Leadership Coalition on AIDS, where she directed a project for the Centers for Disease Control and Prevention and developed workplace programs for the FBI, the National Funeral Directors Association and the South African mining industry.

Her advocacy turned to lung cancer awareness and research fundraising by 2005.

She was an avid traveler, visiting more than 60 countries, and a cineaste, attending the Toronto Film Festival for the past five years.

Survivors include her husband of 33 years, Bill Brannigan of Arlington; two daughters, Beth Brannigan of Lake Tahoe, Calif., and Brigid Brannigan of San Francisco; two sisters, one of them an identical twin; and a brother.