I am sharing with you my experience in our home we have other family members who are senior to us like grandfather, mother, father. I tried to feed them with Nuts & Dark chocolate which are good sources of the anti-oxidant vitamin E, which is associated with less cognitive decline as one ages. Dark chocolate also has the powerful anti-oxidant properties. And it contains natural stimulants like caffeine, which can enhance focus and concentration. Enjoy up to an ounce a day of nuts and dark chocolate to provide all the benefits you need without excess calones, fat, suger or caffeine. Hope my all suggestion benefit for you.