25 Foods to Include in Your Diet for Better Brain Health

21. Soy

This nutrient-dense source of protein also contains large amounts of fatty acids, polyunsaturated fats, fiber, vitamins, and minerals, and it is low in saturated fat.

Several studies over the last two decades indicate that the isoflavones in soy may reduce the risk of cognitive function decline in older women. However, the beneficial effects of soy isoflavones have been a source of debate in recent decades and researchers say more studies are necessary to better understand them.