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Dehydration and the Kidneys
✓ Fact-checked against sourced references · Editorial standards
Severe or repeated dehydration reduces blood flow to the kidneys and can cause acute kidney injury.
How much to drink
For most healthy people, drinking to keep urine pale is a good guide. In advanced kidney disease, fluid may instead be restricted.
Frequently asked questions
Can dehydration permanently damage kidneys?
Repeated severe dehydration can contribute to kidney damage, especially in hot climates or with certain medicines.
Sources
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Educational only. This guide is general kidney-care information, not individual medical advice.