Evaluation of a Structured Nutrition Educational Program in Insulin-treated Diabetic Patients in Vietnam

The purpose of this study is to find out if learning about healthy eating can help people with diabetes control their blood sugar better. This study is for men and women between 18 and 70 years old who use insulin at least twice a day but still have high blood sugar. We want to answer the following questions: Can nutrition education help lower HbA1c (a blood test that shows average blood sugar over the past 3 months)? Can it improve knowledge about nutrition, quality of life, and make blood sugar more stable? Will it help reduce fasting blood sugar, lipid levels, body weight, and the number of times low blood sugar (hypoglycemia) happens? Participants will be divided into two groups: One group will receive a nutrition booklet. The other group will receive the same booklet and join four monthly lessons with a researcher. The four lessons will talk about: Goals for managing diabetes Main nutrients in food How to plan meals How to eat in a way that supports better blood sugar control