The Role of Family Physicians in the Early Detection and Management of Type 2 Diabetes Mellitus in Primary Care: A Critical Narrative Review

Abstract

Type 2 diabetes mellitus (T2DM) is increasingly concentrated within the everyday workload of primary care, where family physicians are positioned to recognise risk before symptoms develop, confirm diagnosis, initiate treatment, coordinate complication prevention, and sustain longitudinal self-management support. This critical narrative review evaluates how effectively that position is translated into improved detection and management, and where the evidence remains uncertain. Literature published principally from 1 January 2000 to 17 July 2026 was identified through searches of PubMed, PubMed Central, Europe PMC, OpenAlex, DOAJ, Semantic Scholar, Crossref, and Google Scholar, supplemented by citation searching and authoritative clinical guidance. Seminal pre-2000 evidence was retained when necessary to interpret contemporary practice. Evidence was appraised for design, applicability to primary care, risk of bias, consistency, and clinical relevance. The strongest evidence supports targeted risk assessment, laboratory confirmation of abnormal glycaemia, structured lifestyle and weight-management interventions, timely individualised pharmacotherapy, and integrated cardiovascular and kidney risk reduction. Family physicians can improve screening processes through electronic records and risk tools, but direct evidence that population screening reduces mortality remains limited, and indiscriminate testing can increase low-value care. Primary care-led weight management can produce remission in selected people with relatively recent T2DM, although durability depends strongly on sustained weight loss. Contemporary glucose-lowering therapy should be selected not only for glycated haemoglobin reduction but also for weight, hypoglycaemia risk, cardiovascular disease, heart failure, chronic kidney disease, cost, and treatment burden. Team-based care, diabetes self-management education and support, continuity, registries, and delegated medication management improve intermediate outcomes, yet implementation is constrained by clinical inertia, fragmented referral pathways, therapeutic complexity, and social disadvantage. Family physicians therefore function most effectively as integrators of a longitudinal diabetes-care system rather than as isolated prescribers. Future research should test scalable practice-level models that link risk detection, prevention, pharmacotherapy, complication surveillance, and equity-sensitive follow-up to patient-important outcomes.