Impact of Extra Virgin Olive Oil on Cognitive Abilities in Older Adults
Understanding Cognitive Decline and Aging
A recent article highlights the positive effects of a short-term, low-dose extra virgin olive oil diet on the cognitive abilities of older adults. As life expectancy rises, there is a notable correlation between aging and cognitive decline, leading to an increase in cognitive impairments and dementia. These conditions can severely impact quality of life and result in significant healthcare expenses. Therefore, cost-effective and manageable prevention methods are essential to alleviate the burden of cognitive impairments and dementia.
Health Benefits of Extra Virgin Olive Oil
Research indicates that a Mediterranean diet can protect against cognitive decline and lower the risk of developing Alzheimer’s disease. These protective effects are mainly attributed to the diet’s high content of monounsaturated fats, which are found in various foods, including certain nuts and oils like macadamia nuts and extra virgin olive oil.
A study suggested that the quality of food is more critical than calorie intake when it comes to improving health status. To investigate this further, Italian researchers conducted a study to examine the impact of incorporating low doses of extra virgin olive oil into a Mediterranean diet on cognitive function. Their findings were published in the Journal of Translational Medicine.
Study Overview
The study involved 180 healthy elderly participants with no prior history of cardiovascular disease or debilitating illnesses. Participants were randomly assigned for one year to either a standard Mediterranean diet or a modified version that substituted all vegetable oils with extra virgin olive oil. The study evaluated various health aspects, including cardiovascular risk factors and dietary intake. Participants also underwent two neuropsychological assessments: the Mini Mental State Examination and the Alzheimer’s Disease Assessment Scale-Cognitive sub-scale.
Findings on Alzheimer’s Symptoms
Due to some participants discontinuing the intervention or missing appointments, a total of 110 individuals completed the study. Both groups exhibited similar demographics, including gender, age, body mass index, and caloric intake. After one year, neuropsychological scores from the Alzheimer’s assessment test decreased in both groups, indicating a positive effect of the Mediterranean diet. However, the group that incorporated extra virgin olive oil experienced a significantly greater decline in scores.
Few studies have explored the specific effects of extra virgin olive oil on cognitive function, particularly its short-term benefits. This study reveals that even a modest increase in extra virgin olive oil consumption over a year can yield noticeable improvements in neuropsychological abilities among the elderly. Participants were not instructed to restrict caloric intake, suggesting that food quality is more impactful than quantity. The authors conclude that adopting a Mediterranean diet enriched with extra virgin olive oil may provide benefits for older individuals. More research is needed to validate these findings further.
Reference
Mazza E, Fava A, Ferro Y, Rotundo S, Romeo S, Bosco D, Pujia A, Montalcini T. Effect of the replacement of dietary vegetable oils with a low dose of extra virgin olive oil in the Mediterranean Diet on cognitive functions in the elderly. Journal of Translational Medicine. 2018 Dec;16(1):10.