That said, there isn’t an agreement that a low-carb diet is superior to any other kind of diet or that it’s healthier long term. A review in the December 2015 issue of Diabetes Therapy that looked at the diet among those with diabetes noted that when it comes to weight loss, a low-carb diet performs no better than other higher-carb diets; and that it doesn’t produce better glycemic control, either. (5) Another report in Diabetes Care also found that over one year, those on a low-carb diet lost weight faster than those on a low-fat one, but after a year, weight loss and A1C levels (an average of blood glucose over about three months) were remarkably similar. (6)
While eating a low-carbohydrate diet might not be the “magic bullet” to lasting weight loss for every person, it’s very helpful for most people to cut back on added sources of sugar and processed carbs. Removing foods such as bread, cereals, sweetened drinks, processed dairy and in some cases, even whole grains or starchy veggies from your diet can result in your body releasing less insulin.
Not everyone should opt for a low-carb diet. If you’re pregnant, it’s possible to be on a lower-carb diet (and may even be indicated if you are told you have gestational diabetes), but talk to your doctor to find out what’s right for you and to ensure that you’re covering any potential nutrient gaps. “Many women who are pregnant find that the thought of eating protein and fat makes them sick,” says Spritzler. This can be especially common in the first trimester. “They naturally want more carbs. You should always listen to your body,” she says.
If you have type 1, it's important to know that the best way to keep your blood sugar levels steady is to carb count rather than following a particular diet. And there is no strong evidence that following a low-carb diet is safe or beneficial, which is why we don’t recommend this diet for people with type 1 diabetes. But some people with type 1 have reported needing less insulin and losing weight from following a low-carb diet.
That said, you don’t have to jump in with both feet. Schmidt recommends trying to eat under 200 g of carbs a day initially (a moderate-carb diet) and then adjust lower based on how you feel. “If you start paying attention to the carbs in your diet, you’ll eat fewer processed foods,” she says. And it’s those whole foods that are the basis of good health.
The Mediterranean-style low carb diet approach, which we recommend in The Blood Sugar Diet, is a low sugar diet, low in starchy, easily digestible carbs, but packed full of disease-fighting vitamins and flavonoids. It is rich in olive oil, fish, nuts, fruit and vegetables, but also contains lots of lovely things that down the years we have been told not to eat, such as full fat yoghurt and eggs.
You can see the results, too. In January 2015, the Journal of Nutrition conducted two studies comparing lower-carb and low-fat diets, finding that of the two approaches, going lower carb helped people shave off more visceral fat, a type of belly fat that hugs organs and is linked to disease. (3) A meta-analysis published in June 2016 in Obesity Reviews also concluded that in obese people, a low-carb diet reduced fat over the course of a year (but not body weight), with the greatest benefits seen in a very-low-carb diet. (4)
If you want to cut costs even more you can replace the avocado in the tuna salad (if you are not lucky enough to find avocados on sale) with more vegetables. A drizzle of some extra olive oil on the salad will compensate for the reduction of fat from the avocado. You can also substitute any of cheeses in the recipes for other types of cheese that you may find on sale.
Flour, wheat products or other refined cereal grains, even if labelled “gluten free.” This means bread, buns, pasta, crackers, porridge, muesli. Whole grains are included here too – on a low-carb diet they are just less bad. Also potatoes (sweet potatoes too), potato chips, French fries, corn products and popped corn, rice. Do check out, however, some of the low-carb versions of these foods:
Most of us LOVE dairy products in all shapes and forms, but it’s possible that skipping or reducing them in your diet could speed up your weight loss and be beneficial for your health. This is because dairy products contain not only milk sugar (lactose), but also milk protein (casein), which stimulates insulin secretion more than many other types of protein, and can trigger overeating.
For decades we’ve been told that fat is detrimental to our health. Meanwhile low-fat “diet” products, often full of sugar, have flooded supermarket shelves. This has likely been a major mistake, that coincided with the start of the obesity epidemic. While this doesn’t prove causation, it’s clear the low-fat message didn’t prevent the obesity increase, and it is possible it contributed.
In general, a low-carb diet focuses on proteins, including meat, poultry, fish and eggs, and some nonstarchy vegetables. A low-carb diet generally excludes or limits most grains, legumes, fruits, breads, sweets, pastas and starchy vegetables, and sometimes nuts and seeds. Some low-carb diet plans allow small amounts of certain fruits, vegetables and whole grains.
Vegetables that grow above ground: Cauliflower, broccoli, cabbage and Brussels sprouts, kale, collards, bok choy, spinach, asparagus, zucchini, eggplant, olives, mushrooms, cucumber, avocado (technically a fruit but usually included with vegetables), onions, peppers, tomatoes, lettuce, other kinds of leafy greens etc. These are lowest in net carbs and can be enjoyed at all levels of carb restriction. However, if you are following a keto diet (< 20 grams of carbs per day), you may need to limit your portions for certain types, like bell peppers and Brussels sprouts. Low-carb vegetables guide
However, there’s no evidence that following a low-carb diet is any more beneficial in managing diabetes than other approaches in the long term, including a healthy, balanced diet. Research suggests that the best type of diet is one that you can maintain in the long term, so it's important to talk to your healthcare professional about what you think will work for you. Another option is the Mediterranean diet, which is also linked to reducing the risk of heart diseases and stroke.