New Study Strengthens Association of Prostate Cancer with Exposure to Agent Orange in Vietnam Vetera

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New Study Strengthens Association of Prostate Cancer with Exposure to Agent Orange in Vietnam Veterans

As men age, their risk of developing prostate cancer increases. Aging Vietnam veterans are giving researchers new opportunities to solidify the connection between in-country exposure to Agent Orange and subsequent prostate cancer development. In a study presented today during the Annual Scientific Meeting of the American Urological Association (AUA) in Orlando, researchers presented data from a large study of veterans enrolled in the Northern California VA System, examining prostate cancer incidence and disease characteristics in those exposed to Agent Orange compared to those who were not exposed.

Researchers presented their findings to the media during a special press conference on May 18 at 2:30 p.m.

More than 13,000 Vietnam Veterans were divided into two groups based on their exposure to Agent Orange. Twice as many men exposed to Agent Orange were identified with prostate cancer. Agent Orange-exposed men were also diagnosed younger and were more likely to present with aggressive or metastatic disease. Other prostate cancer risk factors – race, body-mass index (BMI) and smoking – were not statistically different between the two groups.

This increased evidence suggests that exposure to Agent Orange should be considered a risk factor for developing prostate cancer, similar to African-American heritage or a family history of the disease.

About Agent Orange: Agent Orange is a combination of two synthetic compounds known to be contaminated with the dioxin tetrachlorodibenzo-para-dioxin (TCDD) during the manufacturing process. Named for the color of the barrel in which it was stored, Agent Orange was one of many broad-leaf defoliants used in Vietnam to destroy enemy ground cover. It is estimated that more than 20 million gallons of the chemicals, also known as “rainbow herbicides,” were used between 1962 and 1971; approximately half of the herbicides were Agent Orange. In 1997, the International Agency for Research on Cancer re-classified TCDD as a Group 1 carcinogen, a classification that includes arsenic, asbestos and gamma radiation.

In addition to the author, Christopher L. Amling, M.D., a member of the AUA Public Media Committee, will be on hand to provide expert commentary on the studies.

Chamie K, deVere White RW, Ellison LM: Agent Orange exposure, Vietnam War veterans and the risk of prostate cancer. J Urol, suppl., 2008; 179: 149, abstract 421.

About the American Urological Association: Founded in 1902 and headquartered near Baltimore, Maryland, the American Urological Association is the pre-eminent professional organization for urologists, with more than 15,000 members throughout the world. An educational nonprofit organization, the AUA pursues its mission of fostering the highest standards of urologic care by carrying out a wide variety of programs members and their patients, including UrologyHealth.org, an award-winning on-line patient education resource, and the American Urological Association Foundation, Inc.

Source: American Urological Association (AUA)

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