Anna Taylor, RD, CDE, a licensed dietitian at the Cleveland Clinic in Ohio, says very-low-carb diets can hurt people with type 2 diabetes if done incorrectly. She and Keratsky say it’s important that anyone with diabetes who wants to try a low-carb or ultra-low-carb diet meet with a dietitian or physician to create a plan and make sure their eating style won’t react negatively with their current medicines.
When you're deciding to go on a diet, there are so many options to choose from. You can go keto and focus on healthy fats, try intermittent fasting, or just eat a certain amount of calories a day. One option you might not have tried yet, though, is the DASH diet, which has a simple goal: keeping your body (especially your heart!) as healthy as possible.
Also worth noting is that low-carbohydrate, low-GI, and Mediterranean diets led to significant improvements in blood lipids with up to a 4–10% increase in HDL (4% in the Mediterranean, 5% in low-GI, and 10% in low-carbohydrate diets), 1–4% reduction in LDL (1% in low-carbohydrate, 3% in low-GI, and 4% in Mediterranean diets), and 9% reduction in triglycerides. 
The crazy thing is it is not hard, if it matters. Sure I can see it being hard for someone who does it to lose weight, then when they get closer to their ideal, they want to have treats, etc. Well, for a type one diabetic there’s no end in sight, this is it, and it’s a relatively complication free life (many people reverse their complications when they bring their A1C down to normal) vs. one with inevitable complications. So, perhaps it was too hard for you after a year (you didn’t say, but I assume you are not a type one diabetic), but that is a choice you can make. Not I.
What the diet guru says: ‘Every phase of the New Atkins plan is based on proven scientific principles and is a completely safe, natural way to lose weight,’ say Akins Nutritionals Inc. ‘Phase one is about transforming your body into a fat burning machine and kickstarting your weight loss. By limiting the amount of carbs you eat to around 20g a day, your body will switch its main fuel source from carbs to fat.’
Some of us experience a rise in BG that’s hard to manage when trying Keto. This is one of the reasons why keto did not work out for me (plus weight gain and feeling lousy). That being said, there could be a lot of other reasons why he’s running high, so I’d highly recommend you work with a medical professional and dietitian if you decide to continue down this path. And if your doctor isn’t supporting you, find one that will.
Calorie Restriction. Most of the research on type 2 diabetes supports the use of calorie restriction for improving many of the metabolic issues that contribute to the condition.   Both the keto diet and low-calorie diets have been shown to help reduce insulin resistance, and many researchers postulate that being in a calorie deficit is the key variable behind these positive effects.  For most of us, the keto diet is the better option to experience the benefits of calorie restriction because it allows you to cut your calories naturally without eliciting strong hunger pangs and cravings.
The most effective diet for healthy weight loss just got better! THE DASH DIET WEIGHT LOSS SOLUTION turbocharges the DASH diet, ranked as the "Best Overall Diet" by US News & World Reports for 8 years in a row, with proven NIH research on DASH (Dietary Approaches to Stop Hypertension) to create a program guaranteed to speed weight loss and boost metabolism.
Using the Bulletproof Diet, including Brain Octane Oil every day for long periods of time, and eating carbohydrates some of the time but not always, avoiding inflammatory foods, and using Bulletproof Intermittent Fasting, I was able to recently test with perfect insulin sensitivity — I scored a one on a scale of 1 to 120 (see my numbers below). I also had above average glucose tolerance. That’s metabolic flexibility by the numbers!
Emerging evidence suggests that eating this way may offer protective effects for those with and at risk for type 2 diabetes. For one, Mediterranean eating improves blood sugar control in those already diagnosed with the condition, suggesting it can be a good way to manage the disease. What’s more, given those with diabetes are at increased odds for cardiovascular disease, adopting this diet can help improve their heart health, according to a paper published in April 2014 in the journal Nutrients. (4)
You’re a diabetic counselor and are talking about being worried about not being able to eat birthday cake? Hell I’ve been on keto since July 2016 and haven’t felt any urge to go back, simply because I feel so much better. Also the diet is really not all that restrictive, you can make desserts using stevia/erythritrol, coconut/almond flour, etc. I had ketogenic pizza the other night and it turned out great. Lots of great resources out there for food options. I’m not diabetic myself, but I used to be prone to hypoglycemia and keto has eliminated the issue since I’m not dependent on glucose. There are a lot of wrong ways to do keto though, and doing the diet correctly has a moderate learning curve.
In the 21 subjects the successfully completed the study, scientists observed a 16% decrease in Hemoglobin Ac from baseline to week 16.  Subjects experienced an average decrease in body weight of 8.7 kg (19.2 lbs.).  Additionally, their average blood glucose levels decreased a total of 16.6% and their average triglyceride levels decreased 41.6%. 
Burns fat: You can drop a lot of weight — and quickly — on the keto diet. Ketones suppress ghrelin — your hunger hormone — and increase cholecystokinin (CCK), which makes you feel full. Reduced appetite means it’s easier to go for longer periods without eating, which encourages your body to dip into its fat stores for energy. Learn more here about the keto diet and weight loss.
And, it's important to recognize that both study teams acknowledge that as exciting as their findings seem, a large, randomized controlled trial is still needed to more closely assess a variety of components that may be contributing to the successes found in both studies before the findings can be recommended to anyone outside the study groups1,2 he says.
Use fat as a lever. We’ve been taught to fear fat, but don’t! Both keto and low carb are high fat diets. Fat is our source of energy as well as satiety. The key to understand, though, is that fat is a lever on a low carb or keto diet. Carbs and protein stay constant, and fat is the one you increase or decrease (push the lever up or down) to gain or lose weight, respectively. So if your goal is weight loss, eat enough fat to be satisfied, but there’s no need to “get your fats in” once you’re satisfied.
Popularized by the documentary Forks Over Knives, the Ornish diet is a low-fat, plant-based diet plan based on whole grains, vegetables, fruits, and legumes. It's based on a lacto-ovo style of vegetarianism, allowing only egg whites and nonfat dairy products. It's packed with vitamins, fiber, and lots of filling plants to keep you satiated. Some studies have shown it can reverse heart disease and have beneficial effects on other chronic health conditions. (BTW, there is a difference between a vegan diet and a plant-based diet.)
When you’re eating the foods that get you there (more on that in a minute), your body can enter a state of ketosis in one to three days, she adds. During the diet, the majority of calories you consume come from fat, with a little protein and very little carbohydrates. Ketosis also happens if you eat a very low-calorie diet — think doctor-supervised, only when medically recommended diets of 600 to 800 total calories.