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(Journal Article) |
The Journal of laboratory and clinical medicine 101 (4): 605-10 (1983)
The effect of dietary sodium and protein on urine volume and water intake.
F C Luft
,
N S Fineberg
,
R S Sloan
,
J N Hunt
ABSTRACT
To test the notion that water intake and urine volume are related to dietary sodium or protein intake in free-living persons, we studied normal men at three levels of sodium intake and two levels of protein intake. Twenty-four men received 10, 200, and 400 mEq/day sodium intake for 7 days while protein and caloric intake were maintained constant. Eight men received 80 or 180 gm/day protein intake for 7 days while caloric and sodium intake were maintained constant. Although sodium, solute, and urea nitrogen excretion changed appropriately according to the regimens, there was no demonstrable influence of sodium or protein intake on water intake and urine volume. We conclude that in normal free-living American man, water consumption is independent of either sodium or protein intake.