Olive oil is often praised for its b r a i n -boosting benefits and there’s solid science behind it. The magic largely comes from its high content of monounsaturated fats, particularly oleic acid and a hefty dose of polyphenols powerful antioxidants. First, those monounsaturated fats are a key player. They help maintain the integrity of cell membranes including those in neurons which keeps communication between brain cells sharp. Studies like those from the Mediterranean diet research show diets rich in olive oil think extra virgin correlate with lower rates of cognitive decline and neurodegenerative diseases like Alzheimer’s. A 2017 study in the Annals of Clinical and Translational Neurology found that older adults consuming more olive oil had better memory and cognitive function over time.