Risk Factors Cognitive Decline Vascular Dementia Cognitive Function Symptoms Genetic Risk Factors Cognitive Impairment Cognitive Health Neuroinflammation Memory Loss Disease Progression Preventive Measures Glymphatic System Lecanemab Treatment Options Research Findings Feline Cognitive Dysfunction Syndrome Preventive Medicine Early Prediction Psychological Effects Research Studies Late-Onset Alzheimer's Herpes Simplex Virus (HSV-1) Cognitive Disorders Viral Infections Vaccine Efficacy Preventative Measures Lewy Body Dementia