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A Western-style dietary pattern is associated with cerebrospinal fluid biomarker levels for preclinical Alzheimer's disease -A population-based cross-sectional study among 70-year-olds
Göteborgs universitet, AgeCap, Centrum för åldrande och hälsa.
Göteborgs universitet, AgeCap, Centrum för åldrande och hälsa.
Sahlgrenska Universitetssjukhuset & Sahlgrenska Akademin, Göteborgs universitet & England.
Sahlgrenska Universitetssjukhuset & Göteborgs universitet.
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2021 (English)In: Alzheimer’s & Dementia: Translational Research & Clinical Interventions, E-ISSN 2352-8737, Vol. 7, no 1, p. 1-11, article id e12183Article in journal (Refereed) Published
Abstract [en]

Background: Diet may be a modifiable factor for reducing the risk of Alzheimer's disease (AD). Western-style dietary patterns are considered to increase the risk, whereas Mediterranean-style dietary patterns are considered to reduce the risk. An association between diet and AD-related biomarkers have been suggested, but studies are limited.

Aim: To investigate potential relations between dietary patterns and cerebrospinal fluid (CSF) biomarkers for AD among dementia-free older adults.

Methods: Data were derived from the population-based Gothenburg H70 Birth Cohort Studies, Sweden. A total of 269 dementia-free 70-year-olds with dietary and cerebrospinal fluid (CSF) amyloid beta (Aβ42 and Aβ40), total tau (t-tau), and phosphorylated tau (p-tau) data were investigated. Dietary intake was determined by the diet history method, and four dietary patterns were derived by principal component analysis. A Western dietary pattern, a Mediterranean/prudent dietary pattern, a high-protein and alcohol pattern, and a high-total and saturated fat pattern. Logistic regression models, with CSF biomarker pathology (yes/no) as dependent variables, and linear regression models with continuous CSF biomarker levels as dependent variables were performed. The analyses were adjusted for sex, energy intake, body mass index (BMI), educational level, and physical activity level.

Results: The odds ratio for having total tau pathology (odds ratio [OR] 1.43; 95% confidence interval [CI] 1.02 to 2.01) and preclinical AD (Aβ42 and tau pathology; OR 1.79; 95% CI 1.03 to 3.10) was higher among those with a higher adherence to a Western dietary pattern. There were no other associations between the dietary patterns and CSF biomarkers that remained significant in both unadjusted and adjusted models.

Discussion: Our findings suggest that higher adherence to a Western dietary pattern may be associated with pathological levels of AD biomarkers in the preclinical phase of AD. These findings can be added to the increasing amount of evidence linking diet with AD and may be useful for future intervention studies investigating dietary intake in relation to AD.

Place, publisher, year, edition, pages
2021. Vol. 7, no 1, p. 1-11, article id e12183
Keywords [en]
Alzheimer's disease, amyloid, biomarkers, diet, dietary patterns, tau
National Category
Neurosciences Neurology
Identifiers
URN: urn:nbn:se:hkr:diva-21924DOI: 10.1002/trc2.12183PubMedID: 34027029OAI: oai:DiVA.org:hkr-21924DiVA, id: diva2:1557238
Available from: 2021-05-25 Created: 2021-05-25 Last updated: 2023-03-13Bibliographically approved

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Research Environment Food and Meals in Everyday Life (MEAL)Forskningsmiljön Mat, måltid, hälsa i 24-timmarsperspektivetAvdelningen för mat- och måltidsvetenskap
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