The DASH, vegetable-based, glycemic index-based, ketogenic and Paleo diets appear to improve mood more than other diets

In January 2019 researchers from Iran published the results of their review of the medical scientific literature to assess the association between diet and state of mind. A total of 18 studies were included in their review. Results showed that although the findings between studies were not consistent, it appeared that the DASH, vegetable-based, glycemic index-based, ketogenic and Paleo diets could improve mood more than the others. Further research is therefore required before drawing a firm conclusion as to whether there is a link between diet and mood.

Arab A et al. The association between diet and mood: A systematic review of current literature. Psychiatry Res. 2019 Jan;271:428-437

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