What is exercise-associated hyponatremia (EAH)?

Updated: Jun 17, 2019
  • Author: Eric E Simon, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Exercise-associated hyponatremia (EAH), which develops during or immediately after physical activity, was first reported in athletes participating in long-duration, high-intensity exercise (eg, ultramarathons) particularly in hot weather, but has since been described in otherwise healthy participants in a variety of sporting and recreational activities, including team sports and yoga classes. EAH results from drinking hypotonic fluids (water or sports drinks) beyond thirst and in excess of sweat, urine, and insensible water losses. [14]


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