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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
The association between salt intake and adult systolic blood pressure is modified by birth weight
American Journal of Clinical Nutrition, Volume 93, No. 2, Year 2011
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Description
Background: Epidemiologic evidence suggests that prenatal growth influences adult blood pressure. Nutritional factors, including salt intake, also influence blood pressure. However, it is unknown whether prenatal growth modifies the association between salt intake and blood pressure in later life. Objective: Our aim was to examine whether the relation between salt intake and adult blood pressure is modified by birth weight. Design: We studied 1512 participants of the Helsinki Birth Cohort Study who were born between 1934 and 1944. Information on birth weight was abstracted from birth records, and preterm births were excluded. During a clinical study, at the mean age of 62 y, blood pressure, weight, and height were measured. Diet was assessed with a validated food-frequency questionnaire. The relation between salt intake and blood pressure was tested by a piecewise multivariate regression analysis with the best fitting breakpoints to birth weight and salt intake. Results: An inverse association was observed between birth weight and systolic blood pressure (SBP) (P = 0.02). No significant association between salt intake and SBP was observed in the whole study population. Of those whose birth weight was ≤3050 g, a 1-g higher daily salt intake was associated with a 2.48-mm Hg (95% CI: 0.40, 4.52 mm Hg) higher SBP (P = 0.017) until the saturation point of 10 g. Of those whose birth weight exceeded 3050 g, SBP was not significantly associated with salt intake. For diastolic blood pressure, no significant relations were observed. Conclusion: Adult individuals with low birth weight may be particularly sensitive to the blood pressure - raising effect of salt. © 2011 American Society for Nutrition.
Authors & Co-Authors
Perälä, Mia Maria
Unknown Affiliation
Moltchanova, Elena V.
Unknown Affiliation
Kaartinen, Niina E.
Unknown Affiliation
Männistö, Satu
Unknown Affiliation
Kajantie, Eero O.
Unknown Affiliation
Osmond, Clive
Unknown Affiliation
Barker, David J.P.
Unknown Affiliation
Valsta, Liisa
Unknown Affiliation
Eriksson, Johan Gunnar
Unknown Affiliation
Statistics
Citations: 24
Authors: 9
Affiliations: 10
Identifiers
Doi:
10.3945/ajcn.2010.30022
ISSN:
00029165
e-ISSN:
19383207
Research Areas
Food Security
Maternal And Child Health
Noncommunicable Diseases
Study Design
Cross Sectional Study
Cohort Study
Study Approach
Qualitative
Quantitative