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Heat illness refers to a spectrum of disorders that occur when the body is unable to dissipate heat absorbed from the external environment and the heat generated by internal metabolic processes. As heat illness progresses, failure of one or more body systems can occur. This report summarizes reportable medical events of heat illnesses, heat-related hospitalizations and ambulatory visits among minority active component members (Black, non-Hispanic, Hispanic, and Asian/Pacific Islanders) during 2016. In 2016, incidence rates of heat stroke were highest among Asian/ Pacific Islanders than any other ethnicity. Crude incidence rate of “other heat illnesses” was higher among females than males.  Heat Incidence cases: •	Black, non-Hispanic heat illness incidence cases – 64 for heatstroke and 389 for other heat illnesses •	Hispanic heat illness incidence cases—  63 for heatstroke and 320 for other heat illnesses •	Asian/ Pacific Islander heat illness incidence cases – 32 for heatstroke and for  117 other heat illnesses Incidence rates: •	Black, non-Hispanic incidence rates – 0.30 for heatstroke and 1.84 for other heat illnesses •	Hispanic incidence rates – 0.33 for heatstroke and 1.67 for other heat illnesses •	Asian/Pacific Islander – 0.62 for heatstroke and 2.26 for other heat illnesses Of all military members, the youngest and most inexperienced marines and soldiers – particularly those training at installations in the south eastern U.S. – are at highest risk of heat illnesses including heat stroke, exertional hyponatremia, and exertional rhabdomyolysis. Learn more at www.Health.mil/MSMR

Heat illness refers to a spectrum of disorders that occur when the body is unable to dissipate heat absorbed from the external environment and the heat generated by internal metabolic processes. As heat illness progresses, failure of one or more body systems can occur. This report summarizes reportable medical events of heat illnesses, heat-related hospitalizations and ambulatory visits among minority active component members (Black, non-Hispanic, Hispanic, and Asian/Pacific Islanders) during 2016.

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