Is it harmful to take too much water? The dangers of overhydration and hyponatremia
                                
                                
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                                    4 min read                                
                            
                                While it is rare for healthy individuals, drinking more than one liter of water per hour can overwhelm the kidneys and lead to serious health issues. So, is it harmful to take too much water? Yes, excessive intake can cause a dangerous condition known as hyponatremia.