Trends in Metabolic Disorder in U.S. Army Aviators, 20162018.

Recent epidemiological studies of U.S. Army aviators have suggested higher than anticipated rates of hyperlipidemia and metabolic disorder. The goal of this study was to determine whether this finding has persisted in 20162018 and to subsequently determine whether this trend is genuine and warrants further evaluation. Data were requested from the U.S. Army Aeromedical Electronic Resource Office (AERO) and retrieved from the publicly available Defense Medical Surveillance System (DMSS) utilizing similar inclusion/exclusion criteria, where possible, as the earlier studies. For each year 20162018, incidence rates (per 1000 person years) for hyperlipidemia and metabolic syndrome were retrieved from DMSS, while percentages of aviators with these conditions were retrieved from AERO. The DMSS incidence rates were also age stratified. No formal analyses were conducted. Results from DMSS showed overall rates of hyperlipidemia ranging from 3.18 to 6.83 per 1000 person-years and for metabolic syndrome from 0.16 to 0.69 per 1000 person-years. The age stratified rates increased proportionally with age. AERO data showed a range of 0.81.5% of aviators had hyperlipidemia and for metabolic syndrome this ranged from 0.31 to 0.45%. These rates are broadly comparable to the previous studies findings. This studys findings suggest no continued increase in hyperlipidemia or metabolic disorder in aviators. While the exact cause is unknown, one could speculate a number of sources such as preferences in testing or encouragement from specific commanders or flight surgeons.