Interventions for Loneliness Among Adult Cancer Survivors: A Systematic Review and Meta-Analysis

A translational neuroscience perspective on loneliness: Narrative review focusing on social interaction, illness and oxytocin

This review addresses key findings on loneliness from the social, neurobiological and clinical fields. From a translational perspective, results from studies in humans and animals are included, with a focus on social interaction, mental and physical illness and the role of oxytocin in loneliness. In terms of social interactions, lonely individuals tend to exhibit a range of abnormal behaviors based on dysfunctional social cognitions that make it difficult for them to form meaningful relationships. Neurobiologically, a link has been established between loneliness and the hypothalamic peptide hormone oxytocin. Since social interactions and especially social touch regulate oxytocin signaling, lonely individuals may have an oxytocin imbalance, which in turn affects their health and well-being. Clinically, loneliness is a predictor of physical and mental illness and leads to increased morbidity and mortality. There is evidence that psychopathology is both a cause and a consequence of loneliness. The final section of this review summarizes the findings from social, neurobiological and clinical perspectives to present a new model of the complex construct of loneliness.

Tackling social disconnection: an umbrella review of RCT-based interventions targeting social isolation and loneliness

BACKGROUND

Social isolation and loneliness are urgent public health concerns associated with negative physical and mental health outcomes. Understanding effective remedies is crucial in addressing these problems. This umbrella review aimed to synthesize and critically appraise scientific evidence on the effectiveness of social isolation and loneliness interventions overall and across subgroups. We focused on systematic reviews (SRs) of randomized controlled trials (RCTs).

METHODS

We searched seven databases (June 2022 and updated June 2023) and supplemented the search with grey literature and reference screening to identify SRs published since 2017. Screening, data extraction, and quality assessment using the AMSTAR2 tool were conducted independently by author pairs, with disagreements resolved through discussion.

RESULTS

We included 29 SRs, 16 with meta-analysis and 13 with narrative synthesis. All SRs focused on loneliness, with 12 additionally examining social isolation. Four SRs focused on young people, 11 on all ages, and 14 on older adults. The most frequently examined intervention types were social (social contact, social support), psychological (therapy, psychoeducation, social skills training), and digital (e.g., computer use and online support). Meta-analyses indicated small-to-moderate beneficial effects, while narrative synthesis demonstrated mixed or no effect. Social interventions for social isolation and psychological interventions for loneliness were the most promising. However, caution is warranted due to the effects' small magnitude, significant heterogeneity, and the variable quality of SRs. Digital and other interventions showed mixed or no effect; however, caution is advised in interpreting these results due to the highly diverse nature of the interventions studied.

CONCLUSIONS

This overview of SRs shows small to moderate effectiveness of social interventions in reducing social isolation and psychological ones in tackling loneliness. Further rigorously conducted RCTs and SRs are needed to guide policy decisions regarding the implementation of efficacious and scalable interventions. Evaluation should focus on both preventive structural interventions and tailored mitigating strategies that address specific types and causes of loneliness.

Survivorship Experiences of Allogeneic Hematopoietic Stem Cell Transplantation Survivors: A Qualitative Systematic Review

BACKGROUND

The number of allogeneic hematopoietic stem cell transplantation (allo-HSCT) survivors is increasing globally. Although qualitative studies in this population are reported, clear understanding of how allo-HSCT survivors experience survivorship is lacking.

OBJECTIVE

This study aimed to identify, appraise, and synthesize evidence from qualitative research on survivorship experience among allo-HSCT survivors.

METHODS

A qualitative systematic review was conducted. A literature search of 9 databases and OpenGrey, Google Scholar, and Google was performed from inception to February 2023. Two reviewers independently screened and assessed the eligibility of each study. Descriptive information was extracted from the studies by one reviewer and checked by another. Findings were extracted and analyzed using thematic synthesis.

RESULTS

Seventeen articles were included. Four themes and 12 subthemes regarding allo-HSCT survivors' experiences emerged: (1) recovery as being a longer process than they thought (influenced by long-term physical symptoms, disturbed by survivorship uncertainty); (2) experiencing a restricted survivorship life (shrunken social world, forced dietary limitations, centered around hospitals); (3) suffering from stigma and discrimination (perceived as a burden, seen differently by others, difficulties establishing and maintaining romantic relationships and marriage, limited opportunities in work); and (4) realizing something positive obtained during survivorship (enriched survivorship self-management skills, enhanced personal growth, developed positive relationships).

CONCLUSIONS

The findings reveal the challenges, needs, and growth that allo-HSCT survivors experienced during survivorship. Some understudied areas were identified, which warrant further exploration.

IMPLICATIONS FOR PRACTICE

Targeted survivor-centered care should be provided to allo-HSCT survivors, and interventions to resolve issues experienced during survivorship should be developed.

Risk factors and health behaviors associated with loneliness among cancer survivors during the COVID-19 pandemic

Loneliness may exacerbate poor health outcomes particularly among cancer survivors during the COVID-19 pandemic. Little is known about the risk factors of loneliness among cancer survivors. We evaluated the risk factors of loneliness in the context of COVID-19 pandemic-related prevention behaviors and lifestyle/psychosocial factors among cancer survivors. Cancer survivors (n = 1471) seen at Huntsman Cancer Institute completed a survey between August-September 2020 evaluating health behaviors, medical care, and psychosocial factors including loneliness during COVID-19 pandemic. Participants were classified into two groups: 'lonely' (sometimes, usually, or always felt lonely in past month) and 'non-lonely' (never or rarely felt lonely in past month). 33% of cancer survivors reported feeling lonely in the past month. Multivariable logistic regression showed female sex, not living with a spouse/partner, poor health status, COVID-19 pandemic-associated lifestyle factors including increased alcohol consumption and marijuana/CBD oil use, and psychosocial stressors such as disruptions in daily life, less social interaction, and higher perceived stress and financial stress were associated with feeling lonely as compared to being non-lonely (all p < 0.05). A significant proportion of participants reported loneliness, which is a serious health risk among vulnerable populations, particularly cancer survivors. Modifiable risk factors such as unhealthy lifestyle behaviors and psychosocial stress were associated with loneliness. These results highlight the need to screen for unhealthy lifestyle factors and psychosocial stressors to identify cancer survivors at increased risk of loneliness and to develop effective management strategies.

Factors associated with loneliness in middle-aged and older patients with breast cancer

Objective

Loneliness is associated with adverse mental and physical health conditions and increased mortality. In this study, we identified significant factors associated with loneliness in middle-aged and older patients with breast cancer (BC).

Methods

For this cross-sectional study, we enrolled 200 patients (aged from 20 to 60 years) with BC from two hospitals in Indonesia through convenience sampling. Demographic characteristics, distress symptoms (Symptom Distress Scale), social support (Multidimensional Scale of Perceived Social Support), frailty (Groningen Frailty Indicator), and loneliness (UCLA Loneliness Scale, version 3) were measured. Multivariate logistic regression was performed to identify significant factors associated with loneliness in our cohort.

Results

Loneliness risk was negatively correlated with social support but positively correlated with unemployment and frailty. Thus, the patients received a high level of social support (odds ratio [OR]: 0.96; 95% confidence interval [CI]: 0.92-0.99) and had a low risk of severe loneliness. By contrast, patients who were unemployed (OR: 4.00; 95% CI: 1.65-9.66) and those who had frailty (OR: 5.79; 95% CI: 2.50-13.42) had an elevated risk of severe loneliness.

Conclusions

Unemployment, social support, and frailty may significantly influence the risk of loneliness in patients with BC. Early and regular assessments of loneliness should be integrated in the care of these patients. Suitable strategies aimed at increasing social support and mitigating frailty may benefit middle-aged and older patients with BC, particularly unemployed patients, by reducing their risk of loneliness.

Loneliness at end-of-life: A scoping review

AIMS AND OBJECTIVES

To map and synthesise the literature on loneliness at end-of-life and identify key knowledge gaps in loneliness research.

BACKGROUND

Declined health conditions, reduced social engagement, loss of social roles, and fear of death may lead to loneliness at end-of-life. However, systematic information about loneliness at end-of-life is scant.

METHODS

This scoping review followed the methodology proposed by Arksey and O'Malley. Nine electronic databases were searched from January 2001 to July 2022. Studies about loneliness at end-of-life were included. Two review authors independently screened and selected relevant studies and performed the data charting. The PAGER framework was employed to collate, summarise and report the results. The PRISMA-ScR checklist was included.

RESULTS

A total of 23 studies were included in this review (12 qualitative, 10 quantitative, and one mixed-methods design). There was not reliable data about the prevalence of loneliness among adults at end-of-life internationally. Three or 20-item UCLA loneliness scale was frequently used to measure loneliness. Factors predisposed adults at end-of-life to loneliness included passive and active withdrawal from social networks, inability to share emotions and to be understood, and inadequate support on spirituality. Four strategies were identified to alleviate loneliness, yet none have been substantiated in clinical trials. Interventions facilitating spirituality, social interactions and connectedness seem effective in alleviating loneliness.

CONCLUSIONS

This is the first scoping review on loneliness at end-of-life, synthesising evidence from qualitative, quantitative, and mixed-methods studies. Loneliness among adults at end-of-life is under-investigated and there is a prominent need to address existential loneliness at end-of-life.

RELEVANCE TO CLINICAL PRACTICE

All nurses should proactively assess loneliness or perceived social isolation for clients with life-limiting conditions, regardless of social networks. Collaborative efforts (e.g., medical-social collaborations) to promote self-worthiness, social engagement and connectedness with significant others and social networks are needed.

PATIENT OR PUBLIC CONTRIBUTION

No patient or public involvement.

Mental health outcomes in older breast cancer survivors: Five-year follow-up from the CLIMB study

BACKGROUND

There is a lack of information on mental health outcomes for the increasing older population. Therefore, the aim of the current study is to assess depressive symptoms, loneliness, and apathy in older patients with breast cancer within the first 5 years after diagnosis.

METHODS

Women aged ≥70 years with early-stage breast cancer were included. Multivariate linear mixed models were used to assess longitudinal changes in symptoms of depression (according to the 15-item Geriatric Depression Scale), loneliness (according to the De Jong Gierveld Loneliness Scale) and apathy (according to the Starkstein Apathy Scale) over time at 3, 9, 15, 27 and 60 months follow-up.

RESULTS

In total, 299 patients were included (mean [standard deviation (SD)] age: 75.8 [5.2] years). At 3 months follow-up, shortly after the acute treatment, 10% of patients had significant depressive symptoms, while loneliness and apathy were present in 31% and 41% of all patients, respectively. Depression, loneliness and apathy scores showed no clinically relevant changes over time in the whole cohort. Patients who received adjuvant systemic therapies (i.e. endocrine therapy and/or chemotherapy and/or targeted therapy (trastuzumab)) had similar mental health outcomes as those who did not. However, frail patients had more symptoms (p < 0.001) and were more prone to develop depressive symptoms over time than non-frail patients (p = 0.002).

DISCUSSION

Depression, loneliness and apathy were frequently observed in older women with breast cancer and did not change over time. Patients who received adjuvant systemic therapies had similar mental health outcomes as those who did not. However, frail patients were at higher risk to experience these symptoms.