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the claim

The body produces less urine during sleep because the hormone vasopressin (antidiuretic hormone) rises at night, which concentrates urine.

the verdict
INSUFFICIENT LEANING
Recorded sources
2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the body produces less urine during sleep because the hormone vasopressin (antidiuretic hormone) rises at night, which concentrates urine?

Unclear. One review notes that nighttime urine production is thought to stem from circadian changes in fluid-balance hormones, and a 1967 paper confirms antidiuretic hormone is measurable in urine. Neither source directly establishes that vasopressin rises at night to concentrate urine.

Verdict: PARTIAL LEAN · 2 sources for, 0 against · Last checked

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Evidence for · 2
Age-Related Sleep Disruption and Reduction in the Circadian Rhythm of Urine Output: Contribution to Nocturia? -
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Age-Related Sleep Disruption and Reduction in the Circadian Rhythm of Urine Output: Contribution to Nocturia? - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.2174/1874609809666151130220343

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More for · 1
ESTIMATION OF ANTIDIURETIC HORMONE IN THE URINE OF HEALTHY SUBJECTS AND PATIENTS WITH INAPPROPRIATE SECRETION OF VASOPRESSIN (SCHWARTZ-BARTTER SYNDROME)
1967
Get citation
Ruch, W. (1967). ESTIMATION OF ANTIDIURETIC HORMONE IN THE URINE OF HEALTHY SUBJECTS AND PATIENTS WITH INAPPROPRIATE SECRETION OF VASOPRESSIN (SCHWARTZ-BARTTER SYNDROME). doi.org. https://doi.org/10.1530/acta.0.0540113

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