Potassium and magnesium and cognitive decline in middle-aged adults

Author:

Harner Amanda E.1,Root Martin M.2

Affiliation:

1. College of Agricultural and Environmental Sciences, County Extension Agent-Family and Consumer Sciences, Monroe County, University of Georgia Extension, Athens, GA, USA

2. Appalachian State University, Boone, NC, USA

Abstract

BACKGROUND: Increase in dementias globally is a burden to patients, caregivers, the healthcare system, and the communities in which they live. Understanding nutritional patterns and how they may impact the prevention of these conditions will be critical moving forward. The known impact of minerals such as potassium and magnesium on conditions such as hypertension, oxidative stress, and inflammation – all of which directly impact cognitive health – warrant further study as to their potential direct effects on cognitive function. OBJECTIVE: To determine if low potassium and magnesium blood levels and dietary intakes are associated with cognitive decline in middle-aged adults over a 6-year span. METHODS: Linear regression models were used to describe the associations between potassium and magnesium intakes and cognitive function scores of participants in the Atherosclerosis Risk in Communities Study (ARIC) dataset over 6 years of follow up. Associations with blood values were also assessed. Variables controlled for included total HEI score, a measure of dietary quality. 9,044 participants were included. All linear regression models were run with a 95% confidence interval. RESULTS: Levels of blood potassium and magnesium, in univariate as well as in multivariate analysis were found to have no significant association with cognitive decline. Likewise, intake levels of both minerals were shown to have no significant association with cognitive function. CONCLUSIONS: In 9,044 participants, ages 44 to 66, potassium and magnesium intake and blood serum levels were found to have no significant association with cognitive decline in fully controlled models over 6 years in the ARIC cohort.

Publisher

IOS Press

Subject

Nutrition and Dietetics,Biochemistry,Medicine (miscellaneous),Food Science

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