Association of level of adherence to Mediterranean diet with cognitive and dementia status in subjects with chronic diseases: a cross-sectional study

Background: The Mediterranean diet has been linked to brain neuroprotection. Evidence from meta-analyses showed reduced risk of dementia with greater intake of vegetables and fruits, fish, and the Mediterranean diet. The current study raises important questions about the association between low risk dementia and Mediterranean diet. Objective: The objective was to evaluate the association between levels of adherence to the Mediterranean diet and dementia and cognitive status in subjects 50 years of age and older. Method: The Mediterranean Diet Adherence Screener (MEDAS), the modified 30-item ‘Diagnostic and Statistical Manual of Mental Disorders Third Edition (DSM-III) risk of dementia, and the Standard Mini-Mental Status Examination (SMMSE) cognitive status scores were used to assess the levels of adherence to the Mediterranean diet’. Results: A total of 150 subjects were enrolled in the study. Forty-one (27.3%) had ‘suspected or confirmed dementia, while 48 individuals (32%) were categorized as having moderate to severe cognitive decline. Subjects who reported moderate to high adherence to the Mediterranean diet (55, 36.7%) had significantly lower dementia scores (7.0 3.8 versus 17.6 5.1) and higher cognitive (25.4 3.8 versus 8.6 7.2) scores compared to those (38, 25.3%) who reported low adherence to the Mediterranean diet. Conclusion: Subjects who were highly or moderately adherent to the Mediterranean diet had significantly lower dementia scores and better cognitive status than those with low adherence.