This study evaluated the effectiveness of the Diabefly® program in changing dietary behavior, weight and glycemic outcomes among 71 people with type 2 diabetes. Post-program, median reduction in daily calorie , carbohydrate , and fat intake by 14.24 %, 19.34 %, 15.71 % was observed respectively. A significant reduction was observed in weight and HbA1c by 3.0 kg and 1.30 % respectively. Thus, the personalized lifestyle modification plan based on PGR data in the Diabefly® program can help in effective diabetes management.