More than half of those who see a general practitioner are taking some sort of natural medicine supplement, but little is known about the neurocognitive effects of these substances. This book examines whether natural and herbal medicines, vitamins, and supplements improve human cognition and/or brain processes in the healthy young and elderly and in disorders of cognition such as Alzheimer's Dementia. The book addresses different classes of supplements, different demographic groups, and recent research in the relationship between specific supplements and intelligence, memory, cognition,...