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Aim to have at least 25 to 35 grams (0.88 to 1.23 oz) of fiber a day to keep your glycemic index down, as this can then prevent a rise in your blood sugar levels. Have a fist-sized portion of high-fiber foods at each meal.  Try high-fiber foods like whole grains, legumes, and nuts. Add fruits that are high in fiber, like raspberries, pears, apples, bananas, and strawberries to your diet. Vegetables like artichokes, split peas, broccoli, potatoes, turnips, and Brussels sprouts are also high in fiber. Beans like lentils, lima beans, and black beans, as well as nuts, like almonds, pistachios, and pecans,  are also good sources of fiber. Foods made of processed grains can cause a rapid increase in your blood sugar and insulin levels, making your type 2 diabetes worse. Stay away from white bread, pasta, rice, and potatoes.  You should also avoid foods high in processed sugars, such as cakes, candy, and baked goods. Do not consume soda, energy drinks, or bottled juice, as they can be high in sugar. You can find the list of foods on the Glycemic Index here: http://documents.hants.gov.uk/hms/HealthyEatingontheRun-LowGlycemicIndexFoodList.pdf. Although there's conflicting evidence, beef, pork, and chicken may cause your blood sugar to spike. Try to have less meat in your meals or skip meat altogether for 1-2 of your meals each day. Replace meat with foods that are high in fiber and healthy fats.  You can also try having soy products like tofu instead of meat in your meals. Consider switching to lean meat or mostly high-fiber plant-based diet over time. Start gradually by replacing meat in some of your meals with vegetables, plant-based protein, or grains. Over time, you can try reducing your meat consumption to a few times a week or to just once a week.  A plant-based diet is also a good way to monitor your weight and stay healthy so your diabetes does not get worse. If you do go with a plant-based diet, you'll need to keep track of your B-12 and fat intake to avoid a deficiency. If you are not sure how to best adjust your diet to treat type 2 diabetes, ask your doctor to refer you to a registered dietitian. They can then create a custom diet for you based on your eating habits and preferences. They can also recommend certain meals so you get enough fiber, carbohydrates, and protein in your diet. Many registered dietitians are trained in treating diabetes through diet. They should be able to provide you with lots of resources and support. Keep in mind you cannot treat diabetes with diet changes alone. You'll also need to make lifestyle changes, like exercising more, as well.

Summary:
Have high-fiber foods in every meal to lower your glycemic index. Avoid refined carbohydrates and foods high in sugar. Eat fewer animal products because they can spike your blood sugar. Speak to a registered dietitian about a diabetes-friendly diet.