Nutrient-rich foods that support brain health include fatty fish, which provide omega-3 fatty acids essential for brain function, as well as berries, which are high in antioxidants. Other foods such as nuts, particularly walnuts, are beneficial due to their healthy fats and nutrients. Leafy greens like spinach and whole grains also contribute to cognitive function. Maintaining a balanced diet that includes these foods helps reduce the risk of cognitive decline and supports overall mental health.