The Claim

Following a Mediterranean diet supplemented with extra-virgin olive oil for 6.5 years is associated with better cognitive function in older adults at high cardiovascular risk, specifically higher scores on tests of global cognition, visual memory, and verbal fluency compared to a low-fat control diet.

Source: Virgin olive oil supplementation and long-term cognition: the Predimed-Navarra randomized, trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
83score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Eating a Mediterranean diet with extra-virgin olive oil for about six and a half years is linked to better brain function in older people who have high risk for heart problems. They scored higher on memory and thinking tests than people who ate a low-fat diet.

See the scientific wording

A Mediterranean diet supplemented with extra-virgin olive oil, followed for 6.5 years, is associated with better cognitive function in older adults at high cardiovascular risk, as evidenced by significantly higher scores on tests of global cognition, visual memory, and verbal fluency compared to a low-fat control diet.

Why this might work

The extra-virgin olive oil in the Mediterranean diet contains healthy fats and natural compounds that calm inflammation and protect cells from damage. This keeps the blood vessels in the brain healthy, so the brain gets enough oxygen and nutrients, and stays working well as we age.

Suggested mechanismbased on 1 study

What the research says

1 study

  1. Study: Virgin olive oil supplementation and long-term cognition: the Predimed-Navarra randomized, trial

    People who ate a Mediterranean diet with lots of extra-virgin olive oil for about six and a half years had better scores on memory and language tests, and were less likely to have mild memory problems, compared to those on a low-fat diet.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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