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Individually modifiable risk factors to ameliorate cognitive aging: a systematic review and meta-analysis
journal contribution
posted on 2016-04-18, 10:36 authored by Philippe Lehert, Paulina Villaseca, Eef HogervorstEef Hogervorst, Pauline M. Maki, Victor W. HendersonA number of health and lifestyle factors are thought to contribute to cognitive decline associated with age but cannot be easily modified by the individual patient. We identified 12 individually modifiable interventions that can be implemented during midlife or later with the potential to ameliorate cognitive aging. For ten of these, we used PubMed databases for a systematic review of long-duration (at least 6 months), randomized, controlled trials in midlife and older adults without dementia or mild cognitive impairment with objective measures of neuropsychological performance. Using network meta-analysis, we performed a quantitative synthesis for global cognition (primary outcome) and episodic memory (secondary outcome). Of 1038 publications identified by our search strategy, 24 eligible trials were included in the network meta-analysis. Results suggested that the Mediterranean diet supplemented by olive oil and tai chi exercise may improve global cognition, and the Mediterranean diet plus olive oil and soy isoflavone supplements may improve memory. Effect sizes were no more than small (standardized mean differences 0.11–0.22). Cognitive training may have cognitive benefit as well. Most individually modifiable risk factors have not yet been adequately studied. We conclude that some interventions that can be self-initiated by healthy midlife and older adults may ameliorate cognitive aging.
Funding
Supported by National Institutes of Health grants R01AG034639 and P50AG047366.
History
School
- Sport, Exercise and Health Sciences
Published in
CLIMACTERICVolume
18Issue
5Pages
678 - 689 (12)Citation
LEHERT, P. ... et al., 2015. Individually modifiable risk factors to ameliorate cognitive aging: a systematic review and meta-analysis. Climacteric, 18 (5), pp.678-689.Publisher
Taylor & Francis (© International Menopause Society)Version
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2015Notes
This is an Accepted Manuscript of an article published by Taylor & Francis in Climacteric on 23/08/2015, available online: http://dx.doi.org/10.3109/13697137.2015.1078106.ISSN
1369-7137eISSN
1473-0804Publisher version
Language
- en