At first glance the ketogenic (keto) diet may seem like a crazy idea for type 2 diabetics. After all, many patients are put on diets to help them lose weight. The keto diet is high in fat, but it is very low in carbs, and this combination can help change the way your body stores and uses energy. With this diet your body converts fat instead of sugar into energy, which can improve blood glucose levels while reducing the need for insulin.
The ketogenic diet tries to bring carbohydrates down to less than 5 percent of a person’s daily caloric intake – which means eliminating most grains, fruit, starchy vegetables, legumes and sweets. Instead, it replaces those calories with fat. That fat is turned into ketone bodies, which are an alternative energy source: besides glucose derived from carbohydrates, ketones from fat are the only fuel the brain can use.
Susan answered, “White bread is so refined that the nutrients are stripped down, again it’s a simple carbohydrate where when a diabetic eats something, there blood sugar will rise and you get a boost of energy. This is the difference between a whole grain and a white-refined bread, once you consume that bread your blood sugar will rise for a little while and you’ll feel energized but the whole grain has better effect on your blood sugar, sustaining that energy over a longer period of time, avoiding the ‘crash and burn’ some feel when eating white bread. Keep in mind that in white bread all of the nutrients have been processed out of the food.” The other difference, you can literally, “Taste the difference when you eat one over the other.”
In a second study,2 a Harvard-led research team evaluated the benefit of a ketogenic diet in both children and adults with type 1 diabetes despite concerns about a possible negative effect on growth and development in children following such a restricted diet. These researchers report "exceptional" glucose control with little adverse effects. However, the participants were recruited from a closed Facebook group, TypeOneGrit, for people who follow a diet and diabetes program based on the recommendations in the Diabetes Solution,3 a book by Richard K Bernstein, MD, who devised this program to manage his own type 1 diabetes.
In conclusion, these three meta-analyses indicate that low-carb isn’t a “miracle diet,” but it may be one of the best, if not the best diet, for the management of type 2 diabetes and reversal of the condition in some cases. When people with type 2 diabetes follow a low-carbohydrate ketogenic diet, their health improves, weight is lost, blood sugar and HbA1c levels drop, and other health parameters improve significantly. Even studies that put healthy individuals on a ketogenic diet found similar improvements.
Ketogenic diet for diabetics is a highly controversial topic, but we will break down everything here for you! As a Certified Diabetes Educator (CDE), I have to tell you from the start I will have a biased view here. Sorry, but I feel that I need to be completely honest right up front! I will however, present all the evidence that is available currently on the subject.
Here are a few of the most common side effects that I come across when people first start keto. Frequently the issues relate to dehydration or lack of micronutrients (vitamins) in the body. Make sure that you’re drinking enough water (close to a gallon a day) and eating foods with good sources of micronutrients. To read more on micronutrients, click here >
At the conclusion of the intervention, both groups had improved in all metrics but “these changes were more significant in subjects who were on the LCKD as compared with those on the LCD.” . As a result, the researchers supported the study outlined above and concluded that their “…study shows the beneficial effects of a ketogenic diet over the conventional LCD in obese diabetic subjects.” 
Con: Results can vary depending on how much fluid you drink. By drinking more water, you dilute the concentration of ketones in the urine and thus a lower level of ketones will be detected on the strips. The strips don’t show a precise ketone level. Finally, and most importantly, as you become increasingly keto-adapted and your body reabsorbs ketones from the urine, urine strips may become unreliable, even if you’re in ketosis.