Cognitive Decline Risk Factors Cognitive Function Symptoms Cerebrospinal Fluid Glymphatic System Cognitive Impairment Occupational Health Treatment Options Amyloid Plaques Cytomegalovirus Drug Treatments Treatment Research Genetic Factors Posterior Cortical Atrophy Complications Biomarkers Early Detection Treatment Approval Amyloid Plaque Genetic Causes Research on Alzheimer's Diagnosis Memory Processing Genetic Predisposition Beta-Amyloids Drug Repurposing