Author Identifier (ORCID)
Stephanie R. Rainey-Smith: https://orcid.org/0000-0001-7328-9624
Belinda M. Brown: https://orcid.org/0000-0001-7927-2540
Hamid R. Sohrabi: https://orcid.org/0000-0001-8017-8682
Ralph N. Martins: https://orcid.org/0000-0002-4828-9363
Samantha L. Gardener: https://orcid.org/0000-0002-1933-5260
Abstract
Background: Globally, coffee and tea are consumed extensively, potentially providing neuroprotection through anti-inflammatory and antioxidative stress effects. Objective: This study aimed to investigate associations between coffee and tea intake and cognitive function. Methods: In a longitudinal prospective cohort study, dementia-free (n = 8715; age range 60.0–85.2 years) older adults from the UK Biobank self-reported coffee and tea intake over the previous year; ‘never’, ‘moderate’ (1–3 cups/day), or ‘high’ (≥4 cups/day). Participants completed cognitive assessments at ≥2 timepoints (mean of 9.11 years). Results: Those ‘never’ consuming coffee and ‘moderate’ coffee consumers (β = 0.06, p = 0.005; β = 0.07, p < 0.001, respectively), as well as ‘moderate’ tea consumers and ‘high’ tea consumers (β = 0.06, p = 0.009; β = 0.06, p = 0.003, respectively) had slower fluid intelligence decline. Additionally, those ‘never’ consuming coffee and ‘moderate’ coffee consumers had a slower increase in pairs matching errors (β = −0.05, p = 0.022; β = 0.05, p = 0.013) compared to ‘high’ consumers. Conclusions: ‘Moderate’ coffee, and ‘moderate’ and ‘high’ tea intake may be a protective factor against cognitive decline. Randomized controlled trials are required to establish causal relationships leading to evidence-based recommendations regarding benefits of coffee and tea intake.
Document Type
Journal Article
Date of Publication
9-1-2025
Volume
107
Issue
1
PubMed ID
40686251
Publication Title
Journal of Alzheimer's Disease
Publisher
Sage
School
Centre of Excellence for Alzheimer's Disease Research and Care / School of Medical and Health Sciences /
RAS ID
82647
Funders
National Health and Medical Research Council / Western Australian Near-Miss Award
Grant Number
NHMRC Number : GNT1197315
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
First Page
170
Last Page
178
Comments
Rainey-Smith, S. R., Sewell, K. R., Brown, B. M., Sohrabi, H. R., Martins, R. N., & Gardener, S. L. (2025). Moderate coffee and tea consumption is associated with slower cognitive decline. Journal of Alzheimer’s Disease, 107(1), 170–178. https://doi.org/10.1177/13872877251361058