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  • Title: Is dietary choline intake related to dementia and Alzheimer's disease risks? Results from the Framingham Heart Study.
    Author: Yuan J, Liu X, Liu C, Ang AF, Massaro J, Devine SA, Auerbach SH, Blusztajn JK, Au R, Jacques PF.
    Journal: Am J Clin Nutr; 2022 Nov; 116(5):1201-1207. PubMed ID: 37208066.
    Abstract:
    BACKGROUND: The positive association of choline for cognition has been reported in both animal and human studies, yet the associations of choline with the risks of incident dementia or Alzheimer's disease (AD) in humans is unclear. OBJECTIVES: Our objective was to test the hypothesis that lower or higher dietary choline intake is associated with increased or decreased, respectively, risks of incident dementia and AD. METHODS: Data from the Framingham Heart Study Offspring Cohort exam 5 to exam 9 were used. Participants were free of dementia and stroke, with a valid self-reported 126-item Harvard FFQ at exam 5. The intakes of total choline, its contributing compounds, and betaine were estimated based on a published nutrient database. The intakes were updated at each exam to represent the cumulative average intake across the 5 exams. The associations between dietary choline intakes and incident dementia and AD were examined in mixed-effect Cox proportional hazard models, adjusting for covariates. RESULTS: A total of 3224 participants (53.8% female; mean ± SD age, 54.5 ± 9.7 y) were followed up for a mean ± SD of 16.1 ± 5.1 y (1991-2011). There were 247 incident dementia cases, of which 177 were AD. Dietary choline intake showed nonlinear relationships with incident dementia and AD. After adjusting for covariates, low choline intake (defined as ≤ 219 and ≤ 215 mg/d for dementia and AD, respectively) was significantly associated with incident dementia and incident AD. CONCLUSIONS: Low choline intake was associated with increased risks of incident dementia and AD.
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