Aims A systematic review and meta-analysis was conducted to investigate the prevalence and antecedents/outcomes of loneliness and social isolation among individuals with severe mental disorders (SMD), such as schizophrenia, schizoaffective disorder, bipolar disorder or major depressive disorder. Methods Five well-known electronic databases (PubMed, PsycINFO, CINAHL, Web of Science and Scopus) were searched (plus a hand search). Observational studies that report the prevalence and, if available, antecedents and consequences of loneliness/isolation among individuals with SMD were included. Key characteristics were extracted, and a meta-analysis was performed. Our systematic review was preregistered on PROSPERO (ID: CRD42024559043). The PRISMA guidelines were followed. The Joanna Briggs Institute (JBI) standardized critical appraisal tool developed for prevalence studies was applied to assess the quality of the included studies. Results The initial search yielded 4506 records, and after duplicate removal and screening, a total of 10 studies were finally included. The studies included used data from Europe, Asia, North America, and Oceania. Two studies employed a longitudinal design, while all other studies had a cross-sectional design. Most of the studies included between 100 and 500 individuals with SMD. All studies involved both male and female participants, with women typically comprising about 40% of the sample. The average age of participants often ranged from approximately 30 to 40 years. The estimated prevalence of loneliness was 59.1% (95% CI: 39.6% to 78.6%, I ² = 99.3, P < .001) among individuals with any diagnosis of SMD. Furthermore, the estimated prevalence of objective social isolation was 63.0% (95% CI: 58.6% to 67.4%) among individuals with schizophrenia or schizophrenia spectrum disorder. The quality of the studies was moderate to good. Subjective well-being and depressive symptoms in particular were found to contribute to loneliness in the included studies. Conclusions The present systematic review with meta-analysis identified high levels of loneliness and objective social isolation among those with SMD. These findings stress the importance of monitoring and addressing social needs in this vulnerable group, which may have a positive effect on the life quality of individuals with SMD. Future research in neglected regions (e.g. South America and Africa) is recommended. Different diagnoses within severe mental disorders should be distinguished in future studies. Furthermore, additional longitudinal studies are required to explore the antecedents and consequences of loneliness and social isolation among individuals with SMD.

Objectives Pain has been related to adverse health outcomes in old age. However, evidence from low-income countries is limited, and the potential mediators are poorly understood. Therefore, the aim of this study was to analyze the association between pain burden (PB) and sleep problems (SP) among older adults in Ghana and explore potential psychosomatic mediators. Method We analyzed data from the Aging, Health, and Health-seeking Behavior study administered to 1201 adults aged ≥50 years. PB was assessed using the pain subscale of the Medical Outcomes Study Short Form-36. SP was assessed using nighttime/daytime SP in the last 30 days. Multivariable OLS and mediation models evaluated the hypotheses. Results Mean (SD) age was 66.14 (11.85) years, and 63.3% were women. After full adjustment, PB (versus no PB) was positively associated with SP in the overall sample (b = 0.227, 95% CI = 0.124 − 0.331) and women (b = 0.363, 95% CI = 0.233 − 0.492) but not in men. Moreover, the association was pronounced in the ≥65 year group (b = 0.317) than in the 50-64 year group (b = 0.216). Self-rated health (54.4%), immobility (23.4%), physical activity (12.2%), restlessness (12.1%), depression (6.4%), anxiety (6.3%), and social isolation (7.2%) mediated the PB-SP association. Conclusion PB was positively associated with SP among older adults in Ghana. Bio-psychosomatic factors were identified as potential mediators in this association. Addressing these factors may improve sleep health in older adults with pain.

Aim The aim was to investigate the association of procrastination with loneliness, social isolation, and social withdrawal (also stratified by sex). Subjects and methods Data were used from a large sample of the general adult population in Germany, consisting of individuals aged 18 to 74 years (analytic sample, n = 5000 individuals, mean age: 46.9 years, SD: 15.2; 50.7% female). Standardized instruments were employed to measure the key variables. Multiple linear regressions were employed. Results After the adjustment for various sociodemographic factors, lifestyle habits, and health-related variables, the regression analyses showed that greater procrastination was significantly associated with higher levels of loneliness (β = .11, p < .001), higher perceived social isolation (β = .05, p < .001), higher objective social isolation (β = .14, p < .001), and greater social withdrawal (β = 1.00, p < .001). Additional regressions showed that such associations were mainly significantly more pronounced among men. Conclusion Our study showed that procrastination is associated with several unfavorable social outcomes, particularly among men. Efforts to address procrastination may also help such unfavorable social outcomes, pending future longitudinal studies.