Fish oil is a good one. It's supposed to prevent Alzheimer's if you take one gram a day, and it may improve your eyesight and heart at that dose. You can take

Fish oil is a good one. It's supposed to prevent Alzheimer's if you take one gram a day, and it may improve your eyesight and heart at that dose. You can take five a day. You can take 10. People with heavy brain damage (many minutes without oxygen) take 15 a day for six months to learn to walk and talk again, and they get recover.