Scandinavian journal of caring sciences · 2026
The Silent Crisis: Loneliness in Older Adults-A Critical Review of Impacts, Strategies and Path Forward.
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Abdul Rahman Hanif, Zahari Nurrabiatul Haziqah
Аннотация
BACKGROUND: Loneliness, distinct from social isolation, is a subjective sense of social disconnection exacerbating a public health crisis among older adults. Affecting ~33% of community-dwelling individuals aged 50-80 years post-COVID-19, it rivals smoking in mortality risk and drives cognitive, cardiovascular, and mental health declines. This review synthesises evidence to inform clinical strategies.
METHODS: A critical review of per-reviewed meta-analyses, RCTs, and prospective cohorts literature (2019-2025) was conducted for adults aged 50 years and above. Studies were selected using validated loneliness or social isolation measures, with quality appraised via AMSTAR-2, Cochrane RoB 2, and Newcastle-Ottawa Scale; 34 studies met eligibility criteria from an initial yield of 1,847 records.
RESULTS: Prevalence of loneliness stands at 29% isolation by 2024, highest among those with poor health (53%-75%), unemployment (52%), solitary living, and ages 50-64. Loneliness elevates all-cause mortality (32%), dementia (50%-59%), cardiovascular events (29%-32%), depression (40%), and anxiety (35%). Mechanisms include increased inflammation (↑CRP, IL-6), HPA dysregulation, immune compromise, hippocampal atrophy, and behavioural lapses. Interventions like CBT/reminiscence therapy, multicomponent programs, animal therapy, exercise, and digital platforms have been shown to reduce loneliness, though primary care implementation lags due to screening/referral barriers. Tools such as the UCLA Loneliness Scale enable feasible assessment.
CONCLUSIONS: Loneliness as a geriatric syndrome demands mandated screening, provider education, and reimbursement reforms. Coordinated healthcare-community efforts could avert substantial morbidity/mortality, addressing gaps in long-term outcomes and cost-effectiveness research.
METHODS: A critical review of per-reviewed meta-analyses, RCTs, and prospective cohorts literature (2019-2025) was conducted for adults aged 50 years and above. Studies were selected using validated loneliness or social isolation measures, with quality appraised via AMSTAR-2, Cochrane RoB 2, and Newcastle-Ottawa Scale; 34 studies met eligibility criteria from an initial yield of 1,847 records.
RESULTS: Prevalence of loneliness stands at 29% isolation by 2024, highest among those with poor health (53%-75%), unemployment (52%), solitary living, and ages 50-64. Loneliness elevates all-cause mortality (32%), dementia (50%-59%), cardiovascular events (29%-32%), depression (40%), and anxiety (35%). Mechanisms include increased inflammation (↑CRP, IL-6), HPA dysregulation, immune compromise, hippocampal atrophy, and behavioural lapses. Interventions like CBT/reminiscence therapy, multicomponent programs, animal therapy, exercise, and digital platforms have been shown to reduce loneliness, though primary care implementation lags due to screening/referral barriers. Tools such as the UCLA Loneliness Scale enable feasible assessment.
CONCLUSIONS: Loneliness as a geriatric syndrome demands mandated screening, provider education, and reimbursement reforms. Coordinated healthcare-community efforts could avert substantial morbidity/mortality, addressing gaps in long-term outcomes and cost-effectiveness research.