Document Detail

Salt intake and cardiovascular disease: why are the data inconsistent?
MedLine Citation:
PMID:  23257945     Owner:  NLM     Status:  Publisher    
Effective population-based interventions are required to reduce the global burden of cardiovascular disease (CVD). Reducing salt intake has emerged as a leading target, with many guidelines recommending sodium intakes of 2.3 g/day or lower. These guideline thresholds are based largely on clinical trials reporting a reduction in blood pressure with low, compared with moderate, intake. However, no large-scale randomized trials have been conducted to determine the effect of low sodium intake on CV events. Prospective cohort studies evaluating the association between sodium intake and CV outcomes have been inconsistent and a number of recent studies have reported an association between low sodium intake (in the range recommended by current guidelines) and an increased risk of CV death. In the largest of these studies, a J-shaped association between sodium intake and CV death and heart failure was found. Despite a large body of research in this area, there are divergent interpretations of these data, with some advocating a re-evaluation of the current guideline recommendations. In this article, we explore potential reasons for the differing interpretations of existing evidence on the association between sodium intake and CVD. Similar to other areas in prevention, the controversy is likely to remain unresolved until large-scale definitive randomized controlled trials are conducted to determine the effect of low sodium intake (compared to moderate intake) on CVD incidence.
M J O'Donnell; A Mente; A Smyth; S Yusuf
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-17
Journal Detail:
Title:  European heart journal     Volume:  -     ISSN:  1522-9645     ISO Abbreviation:  Eur. Heart J.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Population Health Research Institute, DBCVS Research Institute, McMaster University, 3rd Floor, 237 Barton St East, Hamilton, Ont., Canada L8L 2X2.
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