A daily drizzle of olive oil, even a small amount, could significantly slash your risk of cognitive decline and dementia, according to a major U.S. study.
NEW YORK, Aug. 5, 2025
As we age, our brains naturally become more vulnerable. Cognitive decline, a gradual decrease in functions like memory, attention, and language, affects many after 60. While some capacity reduction is normal, lifestyle choices can help slow this process. Physical activity, mental engagement, good sleep, and especially diet play crucial roles.
Among dietary champions, olive oil is garnering significant scientific attention. A large-scale study, published in the journal JAMA Network Open and conducted by Harvard University’s nutrition team, confirms its brain-boosting benefits. Consuming just 7 grams of olive oil daily—about half a tablespoon—is linked to a 28% reduction in dementia-related death risk compared to those who rarely or never consume it. Researchers tracked over 92,000 individuals for 28 years, providing robust data. Remarkably, this protective effect holds true regardless of overall diet quality, underscoring olive oil’s independent impact on brain health. It’s a simple, healthy habit to adopt, especially after age 60.
Olive oil: a longevity elixir for your brain
At any age, but especially after 60, olive oil is a valuable health ally. It’s rich in monounsaturated fatty acids, polyphenols, and vitamin E, giving it potent anti-inflammatory and antioxidant properties. The April 2024 Harvard study highlighted its specific brain benefits: olive oil’s compounds shield nerve cells from oxidative stress, reduce chronic inflammation (a key factor in neurodegenerative diseases), and improve brain blood flow.
Researchers noted, “The daily consumption of 7 grams of olive oil is associated with a significant reduction in mortality linked to dementia,” even for those with less balanced diets.
Incorporating olive oil is a simple yet effective strategy for preventing cognitive decline. For maximum benefits, consume it raw—drizzle it on vegetables, salads, soups, or fish, or simply enjoy it on a piece of bread. Be mindful of cooking temperatures, as high heat can degrade some of its beneficial antioxidants. Opt for extra virgin, cold-pressed olive oil from a recent harvest for the best quality. This small daily habit can have a lasting positive impact on your brain health.
