Document Type

Journal Article

Publication Title

Alzheimer's & Dementia: Translational Research & Clinical Interventions (TRCI)

Publisher

Wiley

School

School of Medical and Health Sciences / Centre of Excellence for Alzheimer's Disease Research and Care

RAS ID

36308

Funders

Edith Cowan University - Open Access Support Scheme 2021

Comments

Bondonno, C. P., Bondonno, N. P., Dalgaard, F., Murray, K., Gardener, S. L., Martins, R. N., ... Hodgson, J. M. (2021). Flavonoid intake and incident dementia in the Danish diet, cancer, and health cohort. Alzheimer's & Dementia: Translational Research & Clinical Interventions, 7(1), article e12175. https://doi.org/10.1002/trc2.12175

Additional Information

Introduction

Prospective studies investigating flavonoid intake and dementia risk are scarce. The aims of this study were to examine associations between flavonoid intake and the risk of incident dementia and to investigate whether this association differs in the presence of lifestyle risk factors for dementia.

Methods

We examined associations in 55,985 participants of the Danish Diet, Cancer, and Health Study followed for 23 years. The Phenol-Explorer database was used to estimate flavonoid intakes. Information on incident dementia and dementia subtypes was obtained using Danish patient and prescription registries. Hazard ratios (HRs) were calculated using restricted cubic splines in multivariable-adjusted Cox proportional hazards models.

Results

For incident dementia, moderate compared to low intakes of flavonols (HR: 0.90 [0.82, 0.99]), flavanol oligo+polymers (HR: 0.87 [0.79, 0.96]), anthocyanins (HR: 0.84 [0.76, 0.93]), flavanones (HR: 0.89 [0.80, 0.99]), and flavones (HR: 0.85 [0.77, 0.95]) were associated with a lower risk. For vascular dementia, moderate intakes of flavonols (HR: 0.69 [0.53, 0.89]) and flavanol oligo + polymers (HR: 0.65 [0.51, 0.83]) were associated with lower risk. Flavonoid intakes were not significantly associated with Alzheimer's disease or unspecified dementia. The inverse association between total flavonoid intake and incident dementia was stronger in “ever” smokers than in “never” smokers and in those without hypercholesterolemia versus those with hypercholesteremia. Furthermore, the inverse association of vascular dementia with a moderate total flavonoid intake was stronger in “ever” smokers and those who were “normal” to “overweight” versus “never” smokers or those who were “obese,” respectively.

Conclusion

A moderate intake of flavonoid-rich foods may help to reduce dementia risk.

DOI

10.1002/trc2.12175

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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