Increased consumption of fruit and vegetables is related to a reduced risk of cognitive impairment and dementia: meta-analysis

The purpose of this 2018 meta-analysis was to test the strength of the association that exists between increased fruit and vegetable consumption with reduced risk of cognitive impairment and dementia. Nine studies were included in this meta-analysis, five of which were cohort studies and four were cross-sectional studies, adding up to a total of 31,104 participants and 4,583 incident cases of cognitive impairment and dementia. Jiang et al. (2017) found a significant reduction in risk of cognitive decline and dementia (20% drop in probability) was related to increased consumption of fruits and vegetables, with dose-response meta-analysis revealing approximately 13% of risk reduction linked to an increment of 100g increase of fruit and vegetables per day. Although subgroup analysis indicated this inverse association only applied to participants with average ages of over 65 years and combined sexes. Nevertheless, it was concluded that increased consumption of fruit and vegetables was associated with a lower risk of experiencing cognitive impairment and dementia. [NPIDs: aging, elderly, cognitive decline, neurodegenerative disorders, dementia, FV intake, vegetables, fruits, cognition]

Year: 2017

Reference: Jiang, X., Huang, J., Song, D., Deng, R., Wei, J., & Zhang, Z. (2017). Increased Consumption of Fruit and Vegetables Is Related to a Reduced Risk of Cognitive Impairment and Dementia: Meta-Analysis. Frontiers in aging neuroscience, 9, 18. https://doi.org/10.3389/fnagi.2017.00018