Tag Archives: Mediterranean diet

Diabetes and cognitive decline

31 Jan

More on the connection between diabetes and dementia. A paper published in the journal Diabetologia looked at HbA1c levels (a marker for diabetes) and diabetes status in relationship to cognitive status in large (N =  51,89) longitudinal study. Their findings:

Significant longitudinal associations between HbA1c levels, diabetes status and long-term cognitive decline were observed in this study.

I do have one concern about how this study is being reported in the media. For example, this piece in the Atlantic states

A high-carb diet, and the attendant high blood sugar, are associated with cognitive decline.

It should say “a high refined carb diet.” The distinction is important, simple sugars and refined carbohydrates should be avoided. Note that the same article recommends the Mediterranean Diet, a diet that actually includes a lot of unrefined carbohydrates. As the Harvard Medical Letter reports:

The carbohydrates in Mediterranean-style diets tend to come from unrefined, fiber-rich sources like whole wheat and beans.

Cognitive effects of Mediterranean diet differ by race

19 Jul

A potentially important finding:

‘”In a population of initially well-functioning older adults, we found a significant correlation between strong adherence to the Mediterranean diet and a slower rate of cognitive decline among African American, but not white, older adults. Our study is the first to show a possible race-specific association between the Mediterranean diet and cognitive decline,” a researcher outlines.’

The full abstract can be found here. This may explain why some studies report no cognitive benefit from the Mediterranean diet. It also reminds us of the importance of accounting for moderating factors in research.

 

 

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