Article · 4 min read
Dehydration and the Kidneys
How dehydration can stress or injure the kidneys, and how much to drink.
Last updated: 24/9/2026
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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This page is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor about your specific condition.