Low fluid intake is more harmful to kidney health than high fluid intake
the verdict
SUPPORTED
the evidence backs this
confidence 75/100
Evidence consistently shows that low fluid intake and dehydration impair kidney function and increase the risk of renal injury, supporting the premise that inadequate hydration is detrimental to kidney health.
Evidence for · 3
Impact of recurrent dehydration with mild periodic water restriction on blood pressure and renal function in male spontaneously hypertensive rats.
2026 · cited by 0
Demonstrates that inadequate hydration and water restriction lead to adverse renal function and markers of renal dysfunction.
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More for · 2
Acute kidney injury biomarker responses in young and older female adults following mild hypohydration.
2026 · cited by 0
Shows that hypohydration reduces kidney function and increases acute kidney injury biomarker responses.
Prevalence of low-intake dehydration in hospitalised older adults: systematic review and meta-analysis.
2026 · cited by 0
Indicates that low-intake dehydration is associated with poor health outcomes and negative impacts in vulnerable populations.