This site is dedicated to reducing the incidence of exercise associated hyponatremia (EAH) and preventing further deaths from a condition that is largely avoidable and readily correctable with appropriate, timely identification and response.

• Health Care Providers
• Endurance Athletes
• Researchers
• Race Directors
• Coaches / Trainers
• Medical Directors
• and others

will find the latest EAH research based information and recommendations on:

• Risk Factors
• Prevention
• Diagnosis
• Treatment

Physicians are invited to use the website based form or the downloadable version to report cases of EAH.

1. This will further the development of a database on EAH cases;
2. facilitate communication between medical personnel and scientists regarding the etiology, management, treatment and prevention of EAH;
3. provide a forum to address questions
4. and lead to the dissemination of the findings by publication.

EAH is not rare.

Almond CS, et al, N Engl J Med found a 13% incidence at the 2004 Boston Marathon.

EAH is dangerous!

above: L. EAH induced cerebral edema R. normal brain
Courtesy of: Ayus JC et al. Ann Intern Med 2000

above: London Marathon 2006