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- Previous research into how protective the Mediterranean diet is of cognitive health has been inconclusive, partly because many studies have been based on dietary self-reports.
- By tracking metabolites in blood, scientists can gain a more accurate understanding of the foods a person ingests since it does not rely on self-reporting, which is often inaccurate in dietary studies.
- Now, a new prospective study based on an analysis of participants’ metabolome has found more definitive evidence that consuming a Mediterranean diet promotes a slowing of cognitive decline in older people.
A solid connection between a Mediterranean diet and cognitive health has remained somewhat elusive. This is most likely because so many studies rely on participants’ self-reporting of their dietary intake, a notoriously unreliable means of collecting data.
A new study takes a different approach to measuring diet and selecting cases and controls. The study was conducted in two French regions; one was the discovery cohort and the other was used to validate the findings. The researchers used a nested case-control study design in each city to reduce bias between cases and controls.
In both cases, people with cognitive…
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