Independent and interactive associations of dietary nitrate and salt intake with blood pressure and cognitive function: A cross-sectional analysis in the InCHIANTI study

Authors

Andrea M. McGrattan
Blossom C. M. Stephan
Oliver M. Shannon
Mohsen Mazidi
Mark Gilchrist
Miranda Smallwood
Paul Winyard
Nicholas McMahon
Lauren C. Blekkenhorst, Edith Cowan UniversityFollow
Devi Mohan
Stefania Bandinelli
Louise Robinson
Luigi Ferrucci
Mario Siervo

Author Identifier

Lauren Blekkenhorst

ORCID : 0000-0003-1561-9052

Document Type

Journal Article

Publication Title

International Journal of Food Sciences and Nutrition

Publisher

Taylor & Francis

School

School of Medical and Health Sciences

RAS ID

42692

Funders

National Institute for Health Research / Dementia Prevention Enhanced Care Newcastle University, United Kingdom / UK Government / National Health and Medical Research Council / National Heart Foundation of Australia

Grant Number

NHMRC Number : 1172987

Comments

McGrattan, A. M., Stephan, B. C. M., Shannon, O. M., Mazidi, M., Gilchrist, M., Smallwood, M., . . . Siervo, M. (2022). Independent and interactive associations of dietary nitrate and salt intake with blood pressure and cognitive function: A cross-sectional analysis in the InCHIANTI study. International Journal of Food Sciences and Nutrition, 73(4), 491-502. https://doi.org/10.1080/09637486.2021.1993157

Abstract

Blood pressure (BP) control is a key target for interventions to reduce cognitive decline. This cross-sectional study explored associations between objective (24-hour urine excretion) and subjective (food frequency questionnaire [FFQ]) measures of dietary sodium and nitrate intakes with cognitive function and resting BP in the InCHIANTI cohort. Baseline data from 989 participants aged >50 years were included. In fully adjusted models, participants with concurrent high nitrate and low sodium (Odds Ratio (OR)=0.49, 95%CI 0.32–0.76, p = 0.001) and high nitrate and high sodium (OR = 0.49, 95%CI 0.32–0.77, p = 0.002) 24-hour urinary concentrations had lower odds of high BP than participants with low nitrate and high sodium concentrations. We found no significant associations between sodium and nitrate intakes (24-hour urinary concentrations and FFQ) and poor cognitive performance. Urinary nitrate excretion was associated with lower BP and results appeared to be independent of sodium intake. Further analyses in longitudinal studies are required to substantiate these findings.

DOI

10.1080/09637486.2021.1993157

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 License.