Exercise Associated Hyponatremia – What You Need to Know


Unfortunately, another completely avoidable death occurred during Ironman Frankfurt this past weekend. Per the report, the athlete replenished fluid loss with pure water rather than also supplementing with electrolytes, which effectively diluted blood levels of sodium causing brain swelling that ultimately lead to his death.

As such an important topic, a whole conference exists to discuss low sodium in athletes called the International Exercise-Associated Hyponatremia (EAH) Consensus Development Conference. Ironically, it just met for it’s third annual meeting and released updated guidelines on this phenomenon.

Here’s the full-text of their updated guidelines.

But I’ll summarize them for you (in English):

1. Exercise Associated Hyponatremia is low sodium in your blood from loss of sodium in sweat and/or taking in excessive amounts of water (without sufficiently replenishing electrolytes).

2. You can have low sodium and not notice, or you can have symptoms ranging from lightheadedness, fatigue, muscle cramps and nausea to a…

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