Lay summary
Prediabetes and type 2 diabetes are growing health challenges in Aotearoa New Zealand, disproportionately affecting Māori and Pasifika, and account for a significant proportion of the healthcare budget. Lifestyle change programmes can lead to lasting improvements in these conditions, but they are often resource intensive. This study will explore whether 3-months of continuous glucose monitoring (CGM) combined with a structured Diabetes Self-Management Education (DSME) programme can promote lasting improvements in blood sugar levels through direct feedback and learning in people with early type 2 diabetes or prediabetes more than DSME alone, in a region with a large Māori population and high diabetes rates. We will also compare changes in activity levels and diet, sleep, stress, productivity, fat stores, fitness and blood markers of health between the two groups. Finally, we will assess the cost-effectiveness of this intervention to provide justification for applying this approach nationally if it provides significant improvements.