Feasibility and Preliminary Efficacy of a Theory-driven BALANCE Dietary Program Among Patients With Type 2 Diabetes

Inclusion Criteria: * Meet 1999 WHO diagnostic criteria for type 2 diabetes mellitus (diabetes symptoms plus random plasma glucose ≥11.1 mmol/L, or fasting plasma glucose ≥7.0 mmol/L, or 2-hour plasma glucose ≥11.1 mmol/L after OGTT) Glycated hemoglobin (HbA1c) between 7% and 10%； * Stable glucose-lowering medication regimen as assessed by physician； * Age 18-60 years； * Light physical labor in the past 6 months (work mainly involving standing or small amount of walking)； * Willing to participate voluntarily, understand study content, and able to attend regular follow-up； Exclusion Criteria: * Currently using weight-loss medications； * Significant renal insufficiency (creatinine ≥1.5 mg/dL or 133 μmol/L)； * Significant liver dysfunction (ALT more than 2 times the upper limit of normal)； * History of stroke or myocardial infarction； * Other serious diseases including malignant tumors, psychiatric disorders, anorexia, or gastrointestinal diseases； * Pregnancy, planning pregnancy, postpartum status, or breastfeeding；