Health Outcomes Associated with Loneliness and Social Isolation in Older Adults Living with HIV: A Systematic Review

Self-management of HIV is crucial to reduce disease-related negative health outcomes. Loneliness and social isolation are associated with poor disease self-management (e.g., medication non-adherence and care disengagement) in younger people with HIV and negative health outcomes in the general older adult population. Older adults with HIV (OWH) are at increased risk for loneliness and social isolation, but the associated health outcomes remain unclear. A comprehensive review of Pubmed, Embase, PsycINFO, and Web of Science databases was conducted. Criteria for inclusion were original quantitative research, published in the English language, included adults with a mean age ≥ 50 years, and included a measure for loneliness or social isolation, and a health outcome measure. A total of 41 studies were analyzed and 19,282 participants contributed to this review. The main findings were that loneliness and social isolation were associated with negative health behavior, disease self-management, physiological, and psychological outcomes. Pooled prevalence of loneliness was 33.9% across 8 studies. Loneliness and social isolation are highly prevalent in OWH and are associated with negative outcomes in OWH, similarly to older adults in the general population. Older adults with HIV, however, are challenged by unique psychosocial circumstances that place them at greater risk for loneliness and social isolation and associated negative health outcomes. These findings should be verified in larger, diverse, and longitudinal samples to better understand interrelationships of psychosocial factors and clinical outcomes in OWH.