The Claim
In cognitively healthy adults, consuming olive oil does not improve performance on standard cognitive tests, such as the Mini-Mental State Examination.
What the research says
Challenges is higher
Challenge is ahead, but a single strong supporting study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
For adults with normal thinking abilities, eating olive oil does not make them score better on memory or thinking tests.
See the scientific wording
In cognitively healthy adults, olive oil consumption does not improve scores on standard cognitive tests such as the Mini-Mental State Examination.
Eating olive oil, especially the virgin kind, gives your body special substances called polyphenols. These substances lower inflammation and stop harmful molecules from damaging your cells. Some of these substances reach your brain and protect it directly. They also change the good bacteria in your gut, which produce chemicals that help your brain stay healthy. Olive oil also keeps your blood vessels healthy, which is good for your brain. Because of all these benefits, your brain works better, and you score better on memory and thinking tests.
What the research says
2 studiesStudy: Virgin olive oil supplementation and long-term cognition: the Predimed-Navarra randomized, trial
The study found that people who ate a Mediterranean diet with lots of olive oil did better on memory and thinking tests than those on a low-fat diet, so olive oil actually seemed to help brain function, which goes against the claim.
The study found that eating more virgin olive oil was linked to better scores on brain function tests, while common olive oil was linked to worse scores. So saying olive oil doesn't help brain function is too simple—it depends on the type.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 2 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.