The Study
Greek High Phenolic Early Harvest Extra Virgin Olive Oil Reduces the Over-Excitation of Information-Flow Based on Dominant Coupling Mode (DoCM) Model in Patients with Mild Cognitive Impairment: An EEG Resting-State Validation Approach
This study is like a well-designed experiment where people were randomly put into groups to get different types of olive oil diets. It can tell us that one oil changes brain wave patterns, but it doesn't tell us if that change actually helps with memory or thinking.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
The study looked at whether a special type of extra virgin olive oil (high in healthy compounds called phenols) could improve how different parts of the brain talk to each other in people with mild memory problems. They had three groups: one ate a Mediterranean diet, one added normal olive oil, and one added the special high-phenol olive oil. They measured brain waves before and after a year.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 572 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, the improvements in brain function were significant and linked to better cognitive test scores, suggesting this simple dietary change might help protect brain health in older adults.
- 2People who drank the special olive oil showed better brain communication (less noisiness, more flexibility) and improved attention.
- 3The brain wave changes were linked to better scores on memory tests.
- 4The effect was stronger than with regular olive oil or just the diet.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Alzheimer's Disease
Year
2021
Authors
S. Dimitriadis, C. Lyssoudis, A. Tsolaki, E. Lazarou, M. Kozori, M. Tsolaki
Related Content
Claims (6)
Olive oil helps the different parts of your brain communicate better with each other.
Older adults with mild memory and thinking problems who take a spoonful of a special high-antioxidant olive oil every day for a year have calmer brain activity than those who take regular olive oil or just follow a Mediterranean diet.
Every day for a year, older adults with mild memory problems drank a small glass of a special Greek olive oil made from early-picked olives that is rich in healthy plant compounds. Brain wave tests showed a specific change in brain activity that means they became better at focusing and paying attention.
Older adults with mild memory problems who drank 50 mL of a special Greek olive oil every day for a year showed reduced brain wave activity in low-frequency bands, but the change was not statistically significant, so the result is not conclusive.
Older adults with mild memory problems who take a special olive oil (early harvest, high in polyphenols) every day for a year get a more flexible brain, meaning their brain areas can communicate more easily. This works better than taking other olive oils or just following a Mediterranean diet.
In older adults with mild memory problems, eating a special type of Greek olive oil every day for a year was linked to better scores on thinking tests. The study found that this improvement came with a change in brain activity, where the brain's electrical signals became more regular and less jumbled.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.