Patient-Friendly Explanation

Duodenal mucosal resurfacing, or DMR, is a minimally invasive endoscopic procedure that uses heat energy to renew the lining of the upper small intestine. By refreshing this tissue, which plays a key role in how the body handles sugar and fat, DMR can improve blood sugar control and support weight loss in people with type 2 diabetes.

Clinical Definition

DMR is an endoscopic catheter-based procedure that applies thermal ablation via a circumferential balloon to the duodenal mucosa, causing controlled epithelial regeneration. The mechanism is thought to reset aberrant enteroendocrine signalling — particularly GIP and GLP-1 pathways — that contributes to insulin resistance and metabolic dysfunction in obesity-associated type 2 diabetes.

Why It Matters

DMR represents a paradigm shift. Instead of managing metabolic disease through lifelong medication, it targets the gut-based origins of insulin resistance. For patients with obesity and type 2 diabetes who are not surgical candidates, DMR offers a procedure-based path to improved glycaemic control and weight reduction.