The Bio-Social Pathology of Modern Urban Life: Loneliness, Social Isolation and Telomere Shortening
Makaleler > Tam Makale · 2026
Yazarlar: Dr Gülçin ITIRLI ASLAN,, Dr. Aydemir BOZKAYA,, Prof. Dr. Kürşat Şahin YILDIRIMER,
International Journal of Social Science and Human Research, Uluslararası, 2026
Özet
Modern urban life has generated a paradox of unprecedented social connectivity alongside profound social disconnection. As global urbanisation accelerates—with more than 55% of the world’s population now residing in cities and projections exceeding 68% by 2050—epidemiological data consistently document a parallel rise in loneliness and social isolation across all age groups and socioeconomic strata (United Nations Department of Economic and Social Affairs [UN DESA], 2018). These psychosocial phenomena are no longer merely sociological abstractions; they constitute measurable biological hazards with quantifiable consequences at the cellular level. This comprehensive review integrates evidence from molecular biology, psychoneuroimmunology, epidemiology, and urban health science to examine the mechanistic pathways through which modern urban loneliness and social isolation accelerate biological aging, specifically through telomere shortening. Telomeres—the repetitive nucleotide sequences (TTAGGG)n capping chromosomal ends—serve as sentinel markers of cellular aging and genomic integrity. Their progressive attrition, governed by replicative erosion, oxidative damage, and reduced telomerase activity, is increasingly recognised as a molecular readout of cumulative psychosocial stress (Blackburn et al., 2015). The biological cascade linking urban isolation to telomere shortening involves dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, elevation of pro-inflammatory cytokines (interleukin-6, C-reactive protein, tumour necrosis factor-alpha), reactive oxygen species (ROS)-mediated DNA damage, immune dysregulation with latent viral reactivation (Epstein-Barr virus, cytomegalovirus), and suppression of telomerase reverse transcriptase (TERT) activity (Epel et al., 2004; von Zglinicki, 2002). This review synthesises evidence from human cohort studies, animal experimental models, and large-scale proteomic epidemiology (n ≈ 42,000) to establish a coherent bio-social model in which the structural features of urban environments—noise pollution, social anonymity, residential crowding, loss of green space, economic precarity, and community fragmentation—converge to produce chronic psychosocial stress states that measurably shorten telomeres. Sex differences, age-related moderation, socioeconomic gradients, and autonomic nervous system function (heart rate variability) are identified as critical moderators of this relationship. The review concludes by evaluating intervention strategies—social prescribing, oxytocin administration, mindfulness-based stress reduction, green urban design, and community architecture—and outlines a research agenda for translating molecular findings into urban health policy.