Dietary sodium, AD risk linked


Increased consumption of dietary sodium appears to heighten the risk for atopic dermatitis, according to findings presented at the annual meeting of the Society for Investigative Dermatology, held May 18 to 21 in Portland, Ore.


The authors of the paper examined the association between sodium intake and atopic dermatitis in a U.S. population-based cohort study. Data came from 13,183 children and adults identified from the 1999 to 2000, 2001 to 2002 and 2003 to 2004 cycles of the U.S. National Health and Nutrition Examination Survey.


They found that at the time of the survey, the average daily dietary sodium intake was 3.30 g and 6% of participants reported current dermatitis. Some 12% of participants reported dermatitis in the previous year.


A 1 g increase in dietary sodium intake was associated with an increased risk (odds ratio 1.22, 95% CI, 1.02 to 1.45) for current dermatitis and a nonsignificant increase in the risk for dermatitis in the previous year (adjusted odds ratio, 1.15; 95% CI, 0.98 to 1.34). This was after adjusting for potential confounders, including age, sex, ethnicity, and poverty income ratio.


“These data support salt restriction as a low-cost, safe intervention for atopic dermatitis that could be offered in diverse settings, although additional research is needed using more specific measures of atopic dermatitis in a longitudinal population cohort,” the authors write.


Read the presentation abstract (abstract 241) here.

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