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Ketogenic diet and cognition in neurological diseases: a systematic review
S Pavón1, E Lázaro1, O Martínez1
1Neuromuscular and Neurodevelopment Disorders Research Group (Neuro-e-Motion), Faculty of Psychology and Education, University of Deusto, Spain.
Context:
In recent years, the ketogenic diet has gained special relevance as a possible therapeutic alternative to some neurological and chronic diseases.
Objective:
The aim of this systematic review was to answer the following question: Does a ketogenic diet improve cognitive skills in patients with Alzheimer's disease, Parkinson's disease, refractory epilepsy, and type 1 glucose deficiency syndrome? To define the research question, the PICOS criteria were used, following the guidelines of the PRISMA method.
Data Sources:
Medline/PubMed, Elsevier Science Direct, Dialnet, EBSCOhost, Mediagraphic, Sage Journals, ProQuest, and Wiley Online Library databases were used.
Data Extraction:
After applying inclusion and exclusion criteria in accordance with the PRISMA method, a total of 63 entries published between 2004 and 2019 were used.
Data Analysis:
The records extracted were analyzed from a qualitative approach, so no statistical analysis was carried out.
Conclusion:
Although scientific literature on the subject is scarce and there has tended to be a lack of scientific rigor, the studies reviewed confirmed the effectiveness of this diet in improving the cognitive symptomatology of the aforementioned diseases.
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