"A lower salt intake, in the long-term, could play an important role in the prevention of cardiovascular disease, renal disease and osteoporosis," lead author Feng J. He, PhD, from St. George's, University of London, United Kingdom, said in a news release. "Our study provides further support for the current public health recommendations to reduce salt intake to less than 6 grams per day."
71 whites, 69 blacks, and 29 Asians underwent salt restriction with slow sodium or placebo, each for 6 weeks.
This reduction in salt intake was associated with reductions in blood pressure from 146 ± 13/91 ± 8 mm Hg to 141 ± 12/88 ± 9 mm Hg (P < .001). All 3 ethnic groups had significant decreases in blood pressure and urinary albumin/creatinine ratio with salt restriction, according to subgroup analysis.
Limitations of this study include relatively small sample size, particularly regarding Asians.
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