ACES Act to Study Cancer in Aviators Is Now Law

A bipartisan bill establishing research directives aimed at revealing cancer risks among military aviators and aircrews recently became law.

Spearheaded by Sen. Mark Kelly (D-AZ) and Sen. Tom Cotton (R-AR), as well as Rep. August Pfluger (R-TX-11) and Rep. Jimmy Panetta (D-CA-19), all of whom are veterans, the Aviator Cancer Examination Study (ACES) Act was signed into law on August 14. The ACES Act will address cancer rates among Army, Navy, Air Force, and Marine Corps aircrew members by directing the Secretary of the US Department of Veterans Affairs to study cancer incidence and mortality rates among these populations.

Military aviators and aircrews face a 15% to 24% higher rate of cancer compared with the general US population, including a 75% higher rate of melanoma, 31% higher rate of thyroid cancer, 20% higher rate of prostate cancer, and 11% higher rate of female breast cancer, with potential links to non-Hodgkin lymphoma and testicular cancer. These individuals are also diagnosed earlier in life, at the median age of 55 years compared with 67 years. However, further investigation is still needed to understand why. 

“By better understanding the correlation between aviator service and cancer, we can better assist our military and provide more adequate care for our veterans,” Kelly said.

Some reasons for the higher rates of cancer in aviators seem clear, such as the association between dioxin exposure and cancer. In a study of cancer incidence and mortality in Air Force veterans of the Vietnam War, incidence of melanoma and prostate cancer was increased among White veterans who sprayed herbicides during Operation Ranch Hand. The risk of cancer at any site, prostate cancer, and melanoma was increased in the highest dioxin exposure category among veterans who spent ≤ 2 years in Southeast Asia.

However, some links between these veterans and increased cancer rates are less clear. In a review of 28 studies (including 18 studies in military settings), slight evidence was found for associations between jet fuel exposure and various outcomes including cancer. Cosmic ionizing radiation (CIR) exposure is another possible cause. Several epidemiological studies have documented elevated incidence and mortality for several cancers in flight crews, but a link between them and CIR exposure has not been established.

Certain occupations have been associated with increased risk of testicular germ cell tumors, including aircraft maintenance, military pilots, fighter pilots, and aircrews. Those associations led to hypotheses that job-related chemical exposures (eg, per- and polyfluoroalkyl substances, solvents, paints, hydrocarbons in degreasing/lubricating agents, lubricating oils) may increase risk. A study of young active-duty Air Force servicemen found that pilots and men with aircraft maintenance jobs had elevated tenosynovial giant cell tumor risk, but indicates that further research is needed to “elucidate specific occupational exposures underlying these associations.”

“As a former Navy pilot, there are certain risks that we know and accept come with our service, but we know far less about the health risks that are affecting many aviators and aircrews years later,” Kelly said in a statement. “Veteran aviators and aircrews deserve answers about the correlation between their job and cancer risks so we can reduce those risks for future pilots. Getting this across the finish line has been a bipartisan effort from the start, and I’m proud to see this bill become law so we can deliver real answers and accountability for those who served.”   

“The ACES Act is now the law of the land,” Cotton added. “We owe it to past, present, and future aviators in the armed forces to study the prevalence of cancer among this group of veterans.”

The ACES Act complements Kelly’s bipartisan Counting Veterans’ Cancer Act, which requires Veterans Health Administration facilities to share cancer data with state cancer registries, thereby guaranteeing their inclusion in the national registries. Key provisions of the Counting Veterans’ Cancer Act were included in the first government funding package of fiscal year 2024. 

A bipartisan bill establishing research directives aimed at revealing cancer risks among military aviators and aircrews recently became law.

Spearheaded by Sen. Mark Kelly (D-AZ) and Sen. Tom Cotton (R-AR), as well as Rep. August Pfluger (R-TX-11) and Rep. Jimmy Panetta (D-CA-19), all of whom are veterans, the Aviator Cancer Examination Study (ACES) Act was signed into law on August 14. The ACES Act will address cancer rates among Army, Navy, Air Force, and Marine Corps aircrew members by directing the Secretary of the US Department of Veterans Affairs to study cancer incidence and mortality rates among these populations.

Military aviators and aircrews face a 15% to 24% higher rate of cancer compared with the general US population, including a 75% higher rate of melanoma, 31% higher rate of thyroid cancer, 20% higher rate of prostate cancer, and 11% higher rate of female breast cancer, with potential links to non-Hodgkin lymphoma and testicular cancer. These individuals are also diagnosed earlier in life, at the median age of 55 years compared with 67 years. However, further investigation is still needed to understand why. 

“By better understanding the correlation between aviator service and cancer, we can better assist our military and provide more adequate care for our veterans,” Kelly said.

Some reasons for the higher rates of cancer in aviators seem clear, such as the association between dioxin exposure and cancer. In a study of cancer incidence and mortality in Air Force veterans of the Vietnam War, incidence of melanoma and prostate cancer was increased among White veterans who sprayed herbicides during Operation Ranch Hand. The risk of cancer at any site, prostate cancer, and melanoma was increased in the highest dioxin exposure category among veterans who spent ≤ 2 years in Southeast Asia.

However, some links between these veterans and increased cancer rates are less clear. In a review of 28 studies (including 18 studies in military settings), slight evidence was found for associations between jet fuel exposure and various outcomes including cancer. Cosmic ionizing radiation (CIR) exposure is another possible cause. Several epidemiological studies have documented elevated incidence and mortality for several cancers in flight crews, but a link between them and CIR exposure has not been established.

Certain occupations have been associated with increased risk of testicular germ cell tumors, including aircraft maintenance, military pilots, fighter pilots, and aircrews. Those associations led to hypotheses that job-related chemical exposures (eg, per- and polyfluoroalkyl substances, solvents, paints, hydrocarbons in degreasing/lubricating agents, lubricating oils) may increase risk. A study of young active-duty Air Force servicemen found that pilots and men with aircraft maintenance jobs had elevated tenosynovial giant cell tumor risk, but indicates that further research is needed to “elucidate specific occupational exposures underlying these associations.”

“As a former Navy pilot, there are certain risks that we know and accept come with our service, but we know far less about the health risks that are affecting many aviators and aircrews years later,” Kelly said in a statement. “Veteran aviators and aircrews deserve answers about the correlation between their job and cancer risks so we can reduce those risks for future pilots. Getting this across the finish line has been a bipartisan effort from the start, and I’m proud to see this bill become law so we can deliver real answers and accountability for those who served.”   

“The ACES Act is now the law of the land,” Cotton added. “We owe it to past, present, and future aviators in the armed forces to study the prevalence of cancer among this group of veterans.”

The ACES Act complements Kelly’s bipartisan Counting Veterans’ Cancer Act, which requires Veterans Health Administration facilities to share cancer data with state cancer registries, thereby guaranteeing their inclusion in the national registries. Key provisions of the Counting Veterans’ Cancer Act were included in the first government funding package of fiscal year 2024. 

A bipartisan bill establishing research directives aimed at revealing cancer risks among military aviators and aircrews recently became law.

Spearheaded by Sen. Mark Kelly (D-AZ) and Sen. Tom Cotton (R-AR), as well as Rep. August Pfluger (R-TX-11) and Rep. Jimmy Panetta (D-CA-19), all of whom are veterans, the Aviator Cancer Examination Study (ACES) Act was signed into law on August 14. The ACES Act will address cancer rates among Army, Navy, Air Force, and Marine Corps aircrew members by directing the Secretary of the US Department of Veterans Affairs to study cancer incidence and mortality rates among these populations.

Military aviators and aircrews face a 15% to 24% higher rate of cancer compared with the general US population, including a 75% higher rate of melanoma, 31% higher rate of thyroid cancer, 20% higher rate of prostate cancer, and 11% higher rate of female breast cancer, with potential links to non-Hodgkin lymphoma and testicular cancer. These individuals are also diagnosed earlier in life, at the median age of 55 years compared with 67 years. However, further investigation is still needed to understand why. 

“By better understanding the correlation between aviator service and cancer, we can better assist our military and provide more adequate care for our veterans,” Kelly said.

Some reasons for the higher rates of cancer in aviators seem clear, such as the association between dioxin exposure and cancer. In a study of cancer incidence and mortality in Air Force veterans of the Vietnam War, incidence of melanoma and prostate cancer was increased among White veterans who sprayed herbicides during Operation Ranch Hand. The risk of cancer at any site, prostate cancer, and melanoma was increased in the highest dioxin exposure category among veterans who spent ≤ 2 years in Southeast Asia.

However, some links between these veterans and increased cancer rates are less clear. In a review of 28 studies (including 18 studies in military settings), slight evidence was found for associations between jet fuel exposure and various outcomes including cancer. Cosmic ionizing radiation (CIR) exposure is another possible cause. Several epidemiological studies have documented elevated incidence and mortality for several cancers in flight crews, but a link between them and CIR exposure has not been established.

Certain occupations have been associated with increased risk of testicular germ cell tumors, including aircraft maintenance, military pilots, fighter pilots, and aircrews. Those associations led to hypotheses that job-related chemical exposures (eg, per- and polyfluoroalkyl substances, solvents, paints, hydrocarbons in degreasing/lubricating agents, lubricating oils) may increase risk. A study of young active-duty Air Force servicemen found that pilots and men with aircraft maintenance jobs had elevated tenosynovial giant cell tumor risk, but indicates that further research is needed to “elucidate specific occupational exposures underlying these associations.”

“As a former Navy pilot, there are certain risks that we know and accept come with our service, but we know far less about the health risks that are affecting many aviators and aircrews years later,” Kelly said in a statement. “Veteran aviators and aircrews deserve answers about the correlation between their job and cancer risks so we can reduce those risks for future pilots. Getting this across the finish line has been a bipartisan effort from the start, and I’m proud to see this bill become law so we can deliver real answers and accountability for those who served.”   

“The ACES Act is now the law of the land,” Cotton added. “We owe it to past, present, and future aviators in the armed forces to study the prevalence of cancer among this group of veterans.”

The ACES Act complements Kelly’s bipartisan Counting Veterans’ Cancer Act, which requires Veterans Health Administration facilities to share cancer data with state cancer registries, thereby guaranteeing their inclusion in the national registries. Key provisions of the Counting Veterans’ Cancer Act were included in the first government funding package of fiscal year 2024.