This podcast episode delves into the multifaceted nature of cognition and dementia, exploring cognitive decline, memory function, the effects of stress on memory, and the importance of cognitive activity in maintaining brain health. It discusses the pathological hallmarks of Alzheimer's disease, the potential causes of dementia, and the role of lifestyle factors such as homocysteine and DHA levels. The episode also covers concussions, their management, and the potential benefits of supplements like creatine, DHA, and choline in preventing and treating brain injuries.