Recent research on Gulf War illness and other health problems in veterans of the 1991 Gulf War: Effects of toxicant exposures during deployment

Roberta F White, Lea Steele, James P O'Callaghan, Kimberly Sullivan, James H Binns, Beatrice A Golomb, Floyd E Bloom, James A Bunker, Fiona Crawford, Joel C Graves, Anthony Hardie, Nancy Klimas, Marguerite Knox, William J Meggs, Jack Melling, Martin A Philbert, Rachel Grashow, Roberta F White, Lea Steele, James P O'Callaghan, Kimberly Sullivan, James H Binns, Beatrice A Golomb, Floyd E Bloom, James A Bunker, Fiona Crawford, Joel C Graves, Anthony Hardie, Nancy Klimas, Marguerite Knox, William J Meggs, Jack Melling, Martin A Philbert, Rachel Grashow

Abstract

Veterans of Operation Desert Storm/Desert Shield - the 1991 Gulf War (GW) - are a unique population who returned from theater with multiple health complaints and disorders. Studies in the U.S. and elsewhere have consistently concluded that approximately 25-32% of this population suffers from a disorder characterized by symptoms that vary somewhat among individuals and include fatigue, headaches, cognitive dysfunction, musculoskeletal pain, and respiratory, gastrointestinal and dermatologic complaints. Gulf War illness (GWI) is the term used to describe this disorder. In addition, brain cancer occurs at increased rates in subgroups of GW veterans, as do neuropsychological and brain imaging abnormalities. Chemical exposures have become the focus of etiologic GWI research because nervous system symptoms are prominent and many neurotoxicants were present in theater, including organophosphates (OPs), carbamates, and other pesticides; sarin/cyclosarin nerve agents, and pyridostigmine bromide (PB) medications used as prophylaxis against chemical warfare attacks. Psychiatric etiologies have been ruled out. This paper reviews the recent literature on the health of 1991 GW veterans, focusing particularly on the central nervous system and on effects of toxicant exposures. In addition, it emphasizes research published since 2008, following on an exhaustive review that was published in that year that summarizes the prior literature (RACGWI, 2008). We conclude that exposure to pesticides and/or to PB are causally associated with GWI and the neurological dysfunction in GW veterans. Exposure to sarin and cyclosarin and to oil well fire emissions are also associated with neurologically based health effects, though their contribution to development of the disorder known as GWI is less clear. Gene-environment interactions are likely to have contributed to development of GWI in deployed veterans. The health consequences of chemical exposures in the GW and other conflicts have been called "toxic wounds" by veterans. This type of injury requires further study and concentrated treatment research efforts that may also benefit other occupational groups with similar exposure-related illnesses.

Keywords: Cyclosarin; Gulf War illness; Organophosphates; Pesticide; Sarin; Veterans' health.

Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserved.

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