Time-Restricted Eating vs Dietetic Guidance for Glycaemic Outcomes in Adults at Risk of Type 2 Diabetes

Overview

Time-restricted eating (TRE) has gained attention as a simple way to improve metabolic health without requiring detailed calorie counting or major changes in food choice. In TRE, all daily food and drink calories are consumed within a fixed window, usually 6 to 10 hours, with fasting outside that window. This trial tested whether TRE is at least as effective as individualized dietetic guidance (IDG) for improving long-term blood sugar control in adults at risk of type 2 diabetes.

The main question was whether TRE could match a more traditional, dietitian-led approach in lowering HbA1c, a blood test that reflects average blood glucose over the previous 2 to 3 months. People with overweight or obesity and a high diabetes risk score were studied because they are more likely to progress to type 2 diabetes and may benefit from early lifestyle intervention.