Plant Compounds in Berries, Tea, and Cocoa May Support Healthy Brain Aging

Key Points:

• A review by Semmelweis University researchers suggests that polyphenol-rich foods, such as tea, berries, and olive oil, may support healthy brain aging by influencing biological pathways related to Alzheimer’s disease and nerve cell loss.
• The study highlights plant-based diets like the Mediterranean and MIND diets, which emphasize vegetables, fruits, legumes, whole grains, fish, and olive oil, as sources of key polyphenols linked to antioxidant and anti-inflammatory effects that may protect brain function.
• Individual responses to polyphenol intake vary due to differences in gut microbiome composition, which affects how these compounds are metabolized and their impact on inflammation and nervous system function.
• Despite promising findings, no single food or diet has been proven to prevent dementia, and experts stress that maintaining long-term healthy dietary habits rich in plant-based foods is more beneficial than relying on supplements or “superfoods.”
• With dementia affecting over 55 million people globally and expected to rise, ongoing research focuses on lifestyle factors, including diet, to support cognitive health and reduce the risk of cognitive decline.