Dementia Alzheimer's Disease Gender Differences Neurodegenerative Diseases Brain Health Politics Health Concerns Memory Disorders Memory Preservation Preventive Measures Metabolism Neuroscience Driving Impairment Brain Reserve Assessment Methods Physical Exercise Dietary Recommendations Neurobiology Mental and Physical Fitness in Senators Processing Abilities Symptoms Speech Difficulties Pet Ownership Modifiable Factors Multivitamin Multivitamins Memory Issues Geriatric Health Impact on Work Memory Care Mental Fitness Performance Enhancement Congress Mild Cognitive Impairment