Omega-3

Keep your mind sharp with a diet rich in omega-3 fatty acids — healthful fats found in fish like salmon, sardines and halibut. According to a study published in the journal Neurology, a diet that’s loaded with fish oil may guard the brain against premature aging and memory problems in middle age.
The research found that people with the highest levels of the omega-3s docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) in their blood showed the least brain shrinkage, memory loss and cognitive decline — all risk factors for Alzheimer’s disease and dementia. Include fish in your menu at least twice a week.