Nuts in general is an important part of ones diet. With that being said one nut stands out with respect to brain health.....walnuts. We recommend buying organic walnuts or organic nuts in general, to eliminate pesticide exposure!
"Walnuts are the top nut for brain health. They have a significantly high concentration of DHA, a type of Omega-3 fatty acid. Among other things, DHA has been shown to protect brain health in newborns, improve cognitive performance in adults, and prevent or ameliorate age-related cognitive decline. One study even shows that mothers who get enough DHA have smarter kids. Just a quarter cup of walnuts provides nearly 100% of the recommended daily intake of DHA."https://www.brainhq.com/brain-resources/brain-healthy-foods-nutrition/nuts-brain-health/.