The best “diet” is a healthy eating plan with lots of fruit and vegetables, lean meat and fish and not too much unhealthy fats. There is a growing number of people with diabetes who focus on the carbohydrate content of their meals and prefer a low-carb diet for tight blood glucose level control. If you're looking for ideas of what to eat, I'm a fan of the 7 Day Meal Plan as it gives ideas for the whole week that you can make even lower in carb if you want to, too. Hope that helps answer the question.