New Study Highlights Brain Benefits of Extra Virgin Olive Oil
A recent study from Universitat Rovira i Virgili in Spain has brought exciting news about the potential health benefits of extra virgin olive oil. While olive oil has long been known for its heart health benefits, this research suggests it may also play an important role in supporting brain health.
The study observed that participants who consumed extra virgin olive oil, as opposed to refined olive oil, showed better cognitive abilities and a more diverse gut microbiome. This diversity of gut bacteria is considered crucial for both intestinal and metabolic health.
Lead researcher Jiaqi Ni explained, “This is the first study in humans that looks at how olive oil affects the relationship between gut bacteria and cognitive function.” The research involved two years of tracking over 600 individuals aged 55 to 75, all of whom were overweight or obese and had metabolic syndrome—conditions that can heighten the risk of heart disease.
Researchers found that those who used extra virgin olive oil enjoyed greater diversity in their gut bacteria. Over time, individuals who primarily consumed refined olive oil experienced less variety in their gut microbiome.
Key Differences in Olive Oils
The main distinction between refined and extra virgin olive oils lies in their processing. Refined olive oil is treated to eliminate impurities, which unfortunately also removes many of the natural antioxidants and nutrients beneficial to health. According to Ni, “Not all olive oils have benefits for cognitive function.”
The study also included follow-ups to evaluate any changes in participants’ mental functions. Results indicated that those who consumed extra virgin olive oil had improvements in memory, attention, and overall brain engagement over the study period.
Moreover, researchers discovered that a specific type of beneficial bacteria, known as Adlercreutzia, was more prevalent in individuals who used extra virgin olive oil, suggesting it could be a marker for maintaining brain health.
Jordi Salas-Salvadó, a principal researcher involved in the study, emphasized the importance of the quality of dietary fats. He stated, “Extra virgin olive oil not only protects the heart but can also help preserve the brain as we age.”
Cautions About the Study
It’s important to note that while the findings are promising, this was an observational study involving older Mediterranean adults with specific health risks, which means the results may not be applicable to everyone. The researchers acknowledged that factors like smoking and educational background could also have influenced the outcomes, despite their efforts to account for these.
Also, since the data on dietary habits was self-reported, there may have been some inaccuracies regarding the participants’ actual olive oil consumption.
The findings were published in the journal Microbiome, shedding light on the enriching benefits of choosing high-quality olive oil for both heart and brain health.
