The power of lifestyle intervention to induce glycaemic control in a patient with newly diagnosed type 2 diabetes and HbA1c >10%

Summary: We report a case of a 48-year-old man newly diagnosed with type 2 diabetes mellitus (T2DM), presenting with a critically elevated HbA1c of 10.3%, who achieved near-normal glycaemic control (HbA1c 6.0%) through a structured, three-month lifestyle intervention without initiation of any antidiabetic pharmacotherapy. The intervention entailed aerobic and resistance exercise, nutritional counselling, weekly coaching, and continuous activity monitoring. Notably, body weight remained constant (∼98.4 kg; BMI:31.8 kg/m2), while significant improvements occurred in body composition: -3.2 kg fat mass, -1.2 L visceral fat, +1.5 kg skeletal muscle, and -5 cm waist circumference. This case underscores the potential for non-pharmacological remission in patients with high baseline glycaemic dysregulation and supports early implementation of structured lifestyle programmes in clinical practice despite significantly elevated HbA1c. Learning points: Lifestyle interventions can be highly effective: structured modifications alone reduced HbA1c from 10.3 to 6.0%. Remission without pharmacotherapy: even patients with markedly elevated HbA1c may achieve remission through non-drug strategies. Improved body composition: a reduction in visceral fat and glucosuria and an increase in muscle mass resulted in stable weight. Support enhances adherence: regular monitoring and psychological coaching improved motivation and sustainability. Implications for practice: early structured programmes may reduce reliance on pharmacotherapy and improve healthcare sustainability.