The Vietnam War was fought in a jungle environment that provided cover to the enemy and made battlefield observations difficult, so military strategists used herbicides to remove foliage along key roads and waterways, defoliate areas surrounding enemy bases and supply and communications routes, and improve visibility in heavily canopied forests. The last three decades have seen an ongoing debate about the effects of this military use of herbicides and the potential adverse long-term health effects on those who may have been exposed to these herbicides. In response to these concerns, the Air Force Health Study (AFHS) was created to investigate the potential relationship between the herbicides used and the health problems of those exposed. Disposition of the Air Force Health Study assesses the scientific merit of the AFHS operations and procedures, and makes recommendations for improvement.
The Vietnam War was fought in a jungle environment that provided cover to the enemy and made battlefield observations difficult, so military strategists used herbicides to remove foliage along key roads and waterways, defoliate areas surrounding enemy bases and supply and communications routes, and improve visibility in heavily canopied forests. The last three decades have seen an ongoing debate about the effects of this military use of herbicides and the potential adverse long-term health effects on those who may have been exposed to these herbicides. In response to these concerns, the Air Force Health Study (AFHS) was created to investigate the potential relationship between the herbicides used and the health problems of those exposed. Disposition of the Air Force Health Study assesses the scientific merit of the AFHS operations and procedures, and makes recommendations for improvement.
The Air Force Health Study (AFHS) is a longitudinal, prospective epidemiologic study of more than 2,700 men followed for approximately 20 years. This cohort participated in up to six intensive physical examinations with high rates of compliance. In addition to a complete record of clinical measurements and observations collected at these exams, serum and other biological samples were obtained and preserved. Extensive questionnaires addressing health, lifestyle, and socioeconomic status were administered during each exam, and other information was obtained about the participants' employment, families and offspring, and potential sources of environmental exposures. While the study was completed in 2006, the extensive health data linked to several types of longitudinally collected biologic specimens - some 91,000 serum, whole blood, urine, semen, and adipose tissue specimens - remain a resource for additional research. The AFHS assets are exceptional in the sheer multitude and range of types of information available for each participant. The longitudinal nature of the AFHS - with its extended follow-up, high rates of retention, and repeat biological samples - provides a valuable opportunity for research beyond the original aims of the study. Currently, the Institute of Medicine is the custodian of these assets. The Air Force Health Study Assets Research Program outlines the feasibility and advisability of maintaining the biospecimens based on interest generated from the general scientific community and results of pilot projects and other research projects using the AFHS assets. According to this report, sustaining access to the AFHS biospecimens and data benefits the veterans community and the public at large, who will gain from the information derived from studies of the assets. . This report discusses the scientific value of the AFHS data and biospecimens and the lessons learned in managing access to the assets.
From 1962 to 1971, the U.S. military sprayed herbicides over Vietnam to strip the thick jungle canopy that could conceal opposition forces, to destroy crops that those forces might depend on, and to clear tall grasses and bushes from the perimeters of U.S. base camps and outlying fire-support bases. In response to concerns and continuing uncertainty about the long-term health effects of the sprayed herbicides on Vietnam veterans, Veterans and Agent Orange provides a comprehensive evaluation of scientific and medical information regarding the health effects of exposure to Agent Orange and other herbicides used in Vietnam. The 2006 report is the seventh volume in this series of biennial updates. It will be of interest to policy makers and physicians in the federal government, veterans and their families, veterans' organizations, researchers, and health professionals.
From 1962 to 1971, the U.S. military sprayed herbicides over Vietnam to strip the thick jungle canopy that could conceal opposition forces, to destroy crops that those forces might depend on, and to clear tall grasses and bushes from the perimeters of US base camps and outlying fire-support bases. Mixtures of 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), picloram, and cacodylic acid made up the bulk of the herbicides sprayed. The main chemical mixture sprayed was Agent Orange, a 50:50 mixture of 2,4-D and 2,4,5-T. At the time of the spraying, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the most toxic form of dioxin, was an unintended contaminant generated during the production of 2,4,5-T and so was present in Agent Orange and some other formulations sprayed in Vietnam. Because of complaints from returning Vietnam veterans about their own health and that of their children combined with emerging toxicologic evidence of adverse effects of phenoxy herbicides and TCDD, the National Academies of Sciences, Engineering, and Medicine was asked to perform a comprehensive evaluation of scientific and medical information regarding the health effects of exposure to Agent Orange, other herbicides used in Vietnam, and the various components of those herbicides, including TCDD. Updated evaluations were conducted every two years to review newly available literature and draw conclusions from the overall evidence. Veterans and Agent Orange: Update 11 (2018) examines peer-reviewed scientific reports concerning associations between various health outcomes and exposure to TCDD and other chemicals in the herbicides used in Vietnam that were published between September 30, 2014, and December 31, 2017, and integrates this information with the previously established evidence database.
Military operations produce a great deal of trash in an environment where standard waste management practices may be subordinated to more pressing concerns. As a result, ground forces have long relied on incineration in open-air pits as a means of getting rid of refuse. Concerns over possible adverse effects of exposure to smoke from trash burning in the theater were first expressed in the wake of the 1990â€"1991 Gulf War and stimulated a series of studies that indicated that exposures to smoke from oil-well fires and from other combustion sources, including waste burning, were stressors for troops. In January 2013, Congress directed the Department of Veterans Affairs (VA) to establish and maintain a registry for service members who may have been exposed to toxic airborne chemicals and fumes generated by open burn pits. Assessment of the Department of Veterans Affairs Airborne Hazards and Open Burn Pit Registry analyzes the initial months of data collected by the registry and offers recommendations on ways to improve the instrument and best use the information it collects. This report assesses the effectiveness of the VA's information gathering efforts and provides recommendations for addressing the future medical needs of the affected groups, and provides recommendations on collecting, maintaining, and monitoring information collected by the VA's Airborne Hazards and Open Burn Pit Registry.
The scars of war take many forms: the limb lost, the illness brought on by a battlefield exposure, and, for some, the psychological toll of encountering an extremely traumatic event. PTSD Compensation and Military Service presents a thorough assessment of how the U.S. Department of Veterans Affairs evaluates veterans with possible posttraumatic stress disorder and determines the level of disability support to which they are entitled. The book presents a history of mental health disability compensation of military personnel and reviews the current compensation and pension examination procedure and disability determination methodology. It offers a number of recommendations for changes that would improve the fairness, consistency, and scientific foundation of this vital program. This book will be of interest and importance to policy makers, veterans affairs groups, the armed forces, health care organizations, and veterans themselves.
A fundamental challenge in past studies evaluating whether health problems experienced by Vietnam veterans might be linked to wartime use of Agent Orange or other herbicides has been a lack of information about the veterans' level of exposure to these herbicides. To address that problem, researchers developed a model to assess the opportunity for herbicide exposure among these veterans. The Utility of Proximity-Based Herbicide Exposure Assessment in Epidemiologic Studies of Vietnam Veterans presents the conclusions and recommendations of an Institute of Medicine committee (IOM) that was convened to provide guidance to the Department of Veterans Affairs (VA) about the best use of a model to characterize exposure to the troops based on their proximity to herbicide spraying in Vietnam. This book's assessment is guided by four primary considerations: to be clear about what the assessment model does and does not claim to do; to gain understanding of the strengths and limitations of data on herbicide spraying, troop locations, and health outcomes; to consider whether the model locates spraying and troops accurately to consider the potential contributions and pitfalls of using it in epidemiologic studies. Of particular interest in these deliberations were the degree to which exposure classification might be improved if the model were to be used, and the appropriate interpretation of the results of any such studies. In light of the questions that remain concerning herbicide exposure and health among Vietnam veterans and the array of evidence that has thus far been brought to bear on that issue, The Utility of Proximity-Based Herbicide Exposure Assessment in Epidemiologic Studies of Vietnam Veterans concludes that the application of this model offers a constructive approach to extending knowledge about the effects of herbicides on the health of these veterans and merits the initial steps recommended in our report.
The Air Force Health Study (AFHS) is a longitudinal, prospective epidemiologic study of more than 2,700 men followed for approximately 20 years. This cohort participated in up to six intensive physical examinations with high rates of compliance. In addition to a complete record of clinical measurements and observations collected at these exams, serum and other biological samples were obtained and preserved. Extensive questionnaires addressing health, lifestyle, and socioeconomic status were administered during each exam, and other information was obtained about the participants' employment, families and offspring, and potential sources of environmental exposures. While the study was completed in 2006, the extensive health data linked to several types of longitudinally collected biologic specimens - some 91,000 serum, whole blood, urine, semen, and adipose tissue specimens - remain a resource for additional research. The AFHS assets are exceptional in the sheer multitude and range of types of information available for each participant. The longitudinal nature of the AFHS - with its extended follow-up, high rates of retention, and repeat biological samples - provides a valuable opportunity for research beyond the original aims of the study. Currently, the Institute of Medicine is the custodian of these assets. The Air Force Health Study Assets Research Program outlines the feasibility and advisability of maintaining the biospecimens based on interest generated from the general scientific community and results of pilot projects and other research projects using the AFHS assets. According to this report, sustaining access to the AFHS biospecimens and data benefits the veterans community and the public at large, who will gain from the information derived from studies of the assets. . This report discusses the scientific value of the AFHS data and biospecimens and the lessons learned in managing access to the assets.
Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.
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