St. George’s University School of Medicine;
Grenada;
West Indies;
the North American Correspondent;
Cousins Center for Psychone-uroimmunology;
Semel Institute for Neuroscience and Human Behavior;
Department of Psychiatry and Biobehavioral Sciences;
David Geffen School of Medicine;
University of California-Los Angeles;
Older; adults; Depression; Subjective; social; isolation; Objective; social; isolation; Sleep; disturbance; Fatigue; Systematic; review;