While studies have demonstrated the weight-loss benefits of the diet, Grandl says, several recent studies that apply more rigorous research techniques to study insulin resistance have suggested detrimental effects. The new study, published in August 2018 in the Journal of Physiology, aimed to better understand the basic biological processes that contribute to the development of type 2 diabetes and the early effects of the ketogenic diet. What people eat impacts the release of glucose, or sugar, in the bloodstream. High glucose levels can, over time, cause insulin resistance. Insulin is the substance released in the body to help manage and regulate sugar in the blood at healthy levels.
The improvement in glycemic control occurred while medications for diabetes were discontinued or reduced in most participants (Table (Table5).5). During the study, hypertension and hyperlipidemia medication doses were not increased from baseline nor were new agents added, except in 3 individuals. No serious adverse effects related to the diet occurred. One participant had a hypoglycemic episode requiring assistance from emergency services after he skipped a meal but the episode was aborted without need for transportation to the emergency room or hospitalization.
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 Dietary Approaches to Stop Hypertension, or DASH, diet has been consistently ranked by US News & World Report as a top diet for heart health and weight loss, and it’s no surprise why. Unlike fad diets that call for extreme calorie or food-group restrictions without scientific evidence that supports their efficacy, the DASH diet involves making manageable dietary changes that are flexible and rooted in proven nutritional advice.
This research found the weight loss was slightly greater in the group fasting for two days compared to the other group. It’s worth noting that the participants in these studies were given a huge amount of support, which wouldn’t happen if you were just picking up a book on the 5:2 diet. Overall, there isn’t actually much evidence and we need more data on the long-term success of these diets.’
The other nutritional remedy for T2 diabetes is carbohydrate restriction. In a large, ongoing university-based study, 60% of patients with Type 2 diabetes reversed their diagnosis of diabetes after just one year on a ketogenic diet, supplemented by support via a mobile phone app.11 On this protocol, 94% of participants reduced or eliminated their need for insulin medications while improving the vast majority of cardiovascular risk factors.12
Although the research has yet to discover all of the mechanisms behind why the keto diet is so helpful for diabetics, these four factors do seem to play a significant role in reducing the severity of type 2 diabetes while also helping with the management of type 1 diabetes. If you’d like to learn more about this topic, consider checking out our article on the keto diet and insulin resistance.
If you want to give the DASH diet a try, you're in luck: It works for everyone, according to Gorin. And since it involves eating the healthiest foods around and limiting the bad stuff, there aren't any cons. Plus, sticking to it won't just help you lose weight, it will also help keep your "heart health, blood pressure levels, and cholesterol levels" in check.
Participants were asked to follow one of three diets; a control diet that was low in fiber and minerals like potassium, calcium, and magnesium, but had a “typical American” fat and protein profile, an experimental diet that was similar to the control diet, but included more fruits and vegetables and fewer sweets, and a third diet that was abundant in fruits, veggies, low fat dairy, lean protein, whole grains, and fiber, but lower in fat, red meat, and sugar.
The NY Times Best Sellers, The DASH Diet Action Plan and The DASH Diet Weight Loss Solution, provide real life solutions to make it easy for people to follow the DASH diet. They each have 28 days of meal plans, recipes, guidance for weight loss, how to eat at restaurants, fast food places, etc. and still stay on track. It shows you how to stock up your kitchen for the DASH diet, and how to read food labels to make good choices. And, of course, the meal plans and recipes are all low sodium/low salt. The books show you how to add exercise and other lifestyle changes to help lower blood pressure. The books help you design your own personal "DASH Diet Action Plan" and your own "DASH Diet Weight Loss Solution."
“We do not recommend the diet,” he says. “It works for weight loss, and the liver insulin resistance we observe might be transient. But the diet is simply not necessary and probably not the best choice for weight loss,” he says. “Ketogenic diets are often very low in fiber, which may have bad effects on gut health and overall health, especially over a long term. Diets high in fiber and low in fat work equally well or better than low-carb plans, in many studies, to achieve weight loss and lower glucose intolerance.”
The keto diet is intriguing because it appears to run counter to the prevailing wisdom about the importance of lowering fat intake to prevent diabetes and heart disease, says a co-author of the new study, Gerald Grandl, PhD, a postdoctoral researcher at the Institute for Diabetes and Obesity at the Helmholtz Center in Munich. ETH Zurich conducted the study with University Children's Hospital Zurich.
A ketogenic diet helps control blood sugar levels. It is excellent for managing type 2 diabetes, sometimes even leading to complete reversal of the disease. This has been proven in studies. It makes perfect sense since keto lowers blood-sugar levels, reduces the need of medications and reduces the potentially negative impact of high insulin levels.