Does Exercise Cause Low Sodium? Understanding Hyponatremia Risks and Prevention
                                
                                
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                                    5 min read                                
                            
                                In a 2002 study of Boston Marathon runners, 13% were found to have hyponatremia. This demonstrates that while exercise is fundamentally healthy, it can, under specific circumstances, cause low sodium levels, a condition known as exercise-associated hyponatremia (EAH).