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Dementia risk reduced by Mediterranean diet
Overview
Consumption of a traditional Mediterranean-type diet - rich in foods such as seafood, fruit, and nuts - is associated with a reduced risk of dementia, reports a study published in BMC Medicine. Individuals with a higher adherence to a Mediterranean diet had up to 23% lower risk for dementia compared with those who had lower adherence to a Mediterranean diet.
Diet may be an important modifiable risk factor for dementia that could be targeted for disease prevention and risk reduction but previous studies exploring the impact of a Mediterranean diet have typically been limited to small sample sizes and low numbers of dementia cases. Oliver Shannon and colleagues analysed data from 60,298 individuals from the UK Biobank who had completed a dietary assessment. The authors scored individuals using two measures for adherence to the Mediterranean diet. During the mean follow-up of 9.1 years there were 882 cases of dementia. The authors also considered each individual’s genetic risk for dementia by estimating their polygenic risk, a measure of all the different genes that are related to risk of dementia.
Reference:
Shannon, O.M., Ranson, J.M., Gregory, S. et al. Mediterranean diet adherence is associated with lower dementia risk, independent of genetic predisposition: findings from the UK Biobank prospective cohort study. BMC Med 21, 81 (2023). https://doi.org/10.1186/s12916-023-02772-3