This systematic review analyzed various dietary patterns and their effects on cognitive health in older adults. The Mediterranean diet showed the strongest evidence for protecting against cognitive decline and dementia, attributed to its richness in fruits, vegetables, fish, olive oil, and low levels of processed foods. Other diets like DASH, MIND, and anti-inflammatory diets also demonstrated potential benefits but lacked extensive research. These diets reduce inflammation and improve cardiovascular health, which are critical for maintaining brain function during aging.
Adopting the Mediterranean diet can help preserve cognitive health. Focus on a diet rich in whole foods, olive oil, and fish, while limiting processed foods. Although findings are promising, more research is needed for certain diets, and individual factors should guide dietary choices.