What Happens to Your Body When Low on Sodium? Understanding Hyponatremia
                                
                                
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                                    4 min read                                
                            
                                According to the Cleveland Clinic, hyponatremia, or low sodium, is the most common electrolyte imbalance. When you are low on sodium, your body's fluid balance is disrupted, causing water to shift into your cells and make them swell. This cellular swelling, particularly in the brain, can trigger a cascade of symptoms ranging from mild discomfort to severe, life-threatening complications.