期刊
JOURNAL OF NUTRITION HEALTH & AGING
卷 20, 期 2, 页码 128-137出版社
SPRINGER FRANCE
DOI: 10.1007/s12603-015-0593-x
关键词
Cognition; dairy products; milk; memory
资金
- French National Research Agency [ANR-05-PNRA-010]
- French Ministry of Health
- Mederic
- Sodexo
- Ipsen
- MGEN
- Pierre Fabre
- Sodexo, a food catering company
- Ecole Doctorale Galilee, University of Paris 13, Sorbonne Paris Cite
Objectives: Research concerning the link between dairy product intake and cognition is scant while experimental studies suggest links through various biological mechanisms. This study's objective was to examine the cross-time associations of total and specific dairy product consumption with cognitive performance in aging adults. We also explored compliance with dairy intake recommendations in France. Design: The study was based on the Supplementation en Vitamines et Mineraux Antioxydants randomized trial (SU.VI.MAX, 1994-2002) and the SU.VI.MAX 2 observational follow-up study (2007-2009). Setting: A general-population cohort in France. Participants: N=3,076 participants included in both the SU.VI.MAX and SU.VI.MAX 2 studies. Measurements: Dairy product consumption was estimated using repeated 24h records (1994-1996; mean=10 records, SD=3). Cognitive performance was assessed by neuropsychologists after an average of 13 years post-baseline via a battery of six validated tests. Mean age at the time of the cognitive function evaluation was 65.5 (SD=4.6) years. Principal component analysis revealed factors for verbal memory and working memory. Associations of energy-adjusted dairy product consumption and compliance with the respective dietary guidelines with subsequent cognitive impairment were examined using ANCOVA, providing mean differences (95% confidence intervals, CI) according to tertiles (T), adjusted for confounders including overall dietary patterns. Results: Total dairy product consumption was not associated with cognitive function. However, milk intake was negatively associated with verbal memory performance: mean difference T3 versus T1=-0.99 (-1.83, -0.15). Among women, consuming more than the recommended amount of dairy was negatively associated with working memory performance: excess versus adequate = -1.52 (-2.93, -0.11). Conclusion: Our results indicate that dairy products consumption and especially compliance with dietary guidelines regarding dairy product intake are differentially associated with performance in specific cognitive domains after a comprehensive adjustment for lifestyle factors, health status markers and dietary patterns. Further longitudinal research is needed given the limited data available.
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