SAN FRANCISCO—Consuming higher amounts of dietary sodium does not appear to increase the risk for nocturia, according to findings from a nationally representative study of men and women in the United States presented at the American Urological Association’s 2018 annual meeting.

Nima Baradaran, MD, of the University of California, San Francisco, and colleagues evaluated the relationship between sodium intake and nocturia in a cross-sectional study of 5798 men and women who participated in the National Health and Nutrition Examination Survey (NHANES) 2011–2014. Mean daily sodium intake was 3269 mg in the nocturia group and 3381 mg in the no-nocturia group, based on 24-hour recalls of food consumption. More men than women complained of nocturia. Those with nocturia had higher rates of congestive heart failure, obesity, and depression, and lower levels of physical activity.

After dividing sodium intake into quintiles from roughly 1500 to 5300 mg daily, the investigators found that the higher sodium groups had no statistically significant increased risks for nocturia compared with the lower sodium groups. They adjusted for age, gender, body mass index, depression, and income, and tested other potential contributors, such as urge/stress urinary incontinence, daily physical activity, and diuretic use.

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“Although we continue to recommend a low salt diet to our patients for its cardiovascular benefits, our results do not support a correlation with nocturia,” Dr Baradaran told Renal & Urology News. “We plan to investigate the association of nocturia with objective measurements of urine sodium since it is a more definitive indicator of individual salt intake.”

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Baradaran N, Bauer S, Fergus K. The association of dietary salt intake and nocturia: Data from the 2011-2014 National Health and Nutrition Examination Survey (NHANES). Presented at the American Urological Association’s 2018 annual meeting in San Francisco, May 18–21. Poster MP04-07.