As a type 1 diabetic with a post-meal sugar of 160 mg/dL, focus on a balanced diet: eat small, frequent meals with complex carbs, plenty of vegetables, lean protein, and healthy fats; avoid sugary foods, sweet drinks, and refined carbs. Insulin or other medicines prescribed by your doctor should be continued; do not start or change doses on your own. Regular blood sugar monitoring, exercise, and follow-up with your doctor are important to keep your sugar under control.