Salt intake, stroke, and cardiovascular disease: meta-analysis of prospective studies
By P. Strazzullo, L. D’elia, N. Kandala, F. Cappuccio. British medical journal, 2009
1,406 citations recorded by the source corpus.
Objective To assess the relation between the level of habitual salt intake and stroke or total cardiovascular disease outcome. Design Systematic review and meta-analysis of prospective studies published 1966-2008. Data sources Medline (1966-2008), Embase (from 1988), AMED (from 1985), CINAHL (from 1982), Psychinfo (from 1985), and the Cochrane Library. Review methods For each study, relative risks and 95% confidence intervals were extracted and pooled with a random effect model, weighting for the inverse of the variance. Heterogeneity, publication bias, subgroup, and meta-regression analyses were performed. Criteria for inclusion were prospective adult population study, assessment of salt intake as baseline exposure, assessment of either stroke or total cardiovascular disease as outcome, follow-up of at least three years, indication of number of participants exposed and number of events across different salt intake categories. Results There were 19 independent cohort samples from 13 studies, with 177 025 participants (follow-up 3.5-19 years) and over 11 000 vascular events. Higher salt intake was associated with greater risk of stroke (pooled relative risk 1.23, 95% confidence interval 1.06 to 1.43; P=0.007) and cardiovascular disease (1.14, 0.99 to 1.32; P=0.07), with no significant evidence of publication bias. For cardiovascular disease, sensitivity analysis showed that the exclusion of a single study led to a pooled estimate of 1.17 (1.02 to 1.34; P=0.02). The associations observed were greater the larger the difference in sodium intake and the longer the follow-up. Conclusions High salt intake is associated with significantly increased risk of stroke and total cardiovascular disease. Because of imprecision in measurement of salt intake, these effect sizes are likely to be underestimated. These results support the role of a substantial population reduction in salt intake for the prevention of cardiovascular disease.
Subfields: Complementary and alternative medicine, Nutrition and Dietetics, Public Health, Environmental and Occupational Health
View Paper: https://www.semanticscholar.org/paper/5fcd8c9e29237b6665bd88c9418d0a43722bea06
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nutrition and Dietetics
In Public Health, Environmental and Occupational Health
Citations in the corpus
- Guidelines for the Primary Prevention of Stroke (2011, neutral): “reductions in salt intake may be advocated as a way to reduce stroke risk.(194) Self-measured BP monitoring is recommended”
- Alternative dietary indices both strongly predict risk of chronic disease. (2012, background): “11 High sodium intake has been associated with higher blood pressure (81), and salt-preserved foods are associated with greater risk of stomach cancer (52), CVD (54), and total”