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Adherence to a Mediterranean Diet Protects from Cognitive Decline in the Invecchiare in Chianti Study of Aging

1
Longitudinal study section, Translation Gerontology Branch, National Institute on Aging, Baltimore, MD 21224, USA
2
Department of Exercise and Nutrition Sciences, Milken Institute School of Public Health, The George Washington University, Washington, DC 20052, USA
3
Geriatric Unit, Azienda Sanitaria Firenze (A.S.F.), Florence 50125, Italy
*
Author to whom correspondence should be addressed.
Nutrients 2018, 10(12), 2007; https://doi.org/10.3390/nu10122007
Received: 15 November 2018 / Revised: 10 December 2018 / Accepted: 17 December 2018 / Published: 19 December 2018
(This article belongs to the Special Issue Lifestyle Strategies in Cognitive Decline: Focus on Nutrition)
Following a Mediterranean diet high in plant-based foods and fish, low in meat and dairy foods, and with moderate alcohol intake has been shown to promote healthy aging. Therefore, we examined the association between a Mediterranean diet and trajectories of cognitive performance in the InCHIANTI study. Subjects (N = 832) were examined every 2–3 years up to 18 years with an average follow-up period of 10.1 years. Cognitive performance was assessed using the Mini Mental State Examination (MMSE) at every visit. Dietary habits were assessed using a validated food frequency questionnaire and adherence to Mediterranean diet was computed on a scale of 0-9 and categorized into three groups of low (≤3), medium (4–5), and high (≥6). Those in the highest adherence group (OR = 0.48, 95% CI: 0.29–0.79) and medium adherence group (OR = 0.64, 95% CI: 0.41–0.99) were less likely to experience cognitive decline. The annual average decline in MMSE scores was 0.4 units, for those in the high and medium adherence group this decline was attenuated by 0.34 units (p < 0.001) and 0.16 units (p = 0.03), respectively. Our findings suggest that adherence to a Mediterranean diet can have long-lasting protective effects on cognitive decline and may be an effective strategy for the prevent or delay dementia. View Full-Text
Keywords: Mediterranean diet; cognitive decline; longitudinal analysis Mediterranean diet; cognitive decline; longitudinal analysis
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Tanaka, T.; Talegawkar, S.A.; Jin, Y.; Colpo, M.; Ferrucci, L.; Bandinelli, S. Adherence to a Mediterranean Diet Protects from Cognitive Decline in the Invecchiare in Chianti Study of Aging. Nutrients 2018, 10, 2007.

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