Equity, Access, Resource Availability, and the Notion of Comprehensive Diabetes Care: A Narrative Review of the Current State of Affairs

Comprehensive diabetes care is the evidence-based standard for type 2 diabetes management, extending beyond glycaemic control to encompass cardiovascular and renal risk reduction, complication surveillance, diabetes self-management education and support, psychosocial care, culturally responsive communication, and coordinated multidisciplinary follow-up. Despite major advances in therapeutics and guideline development, delivery of comprehensive care remains inconsistent, fragmented, and inequitable. This narrative review examines the gap between guideline-recommended comprehensive diabetes care and real-world delivery, with attention to equity, access, and resource availability. Literature from the past two decades was reviewed from PubMed, Embase, Google Scholar, and professional society guidelines, and evidence indicates that many people with type 2 diabetes do not receive recommended care processes, including regular glycaemic monitoring, cardiovascular risk management, complication screening, diabetes self-management education and support, and indicated cardiorenal-protective pharmacotherapy. The gap is apparently socially patterned, as racial and ethnic minority populations, people with lower socioeconomic status, rural communities, people with limited insurance coverage, and populations in low- and middle-income countries were observed to be less likely to receive guideline-concordant care. Provider-level constraints, including time pressure, limited training, therapeutic inertia, and inadequate decision support, interact with system-level barriers such as fragmented care delivery, weak referral pathways, limited multidisciplinary team access, inadequate health information technology, and unaffordable medicines and monitoring tools, collectively reducing comprehensive diabetes care from a clinical standard to an aspiration. Closing this implementation gap requires equity-oriented health system redesign, affordable access to essential and innovative therapies, expanded diabetes education infrastructure, community-linked care models, population health management, and deliberate action on social and structural determinants of health.