How a Low-Carb Diet Can Help Type 1 and Type 2 Diabetics
A low-carb diet has become one of the most widely discussed dietary approaches for managing diabetes - and for good reason. Reducing carbohydrate intake directly reduces the amount of glucose entering the bloodstream, which is at the core of diabetes management for both Type 1 and Type 2 diabetics.
If you have just been diagnosed with diabetes, one of the first questions you are likely asking is what you should eat. A low-carb diet is one of the most well-researched and effective dietary approaches for managing both Type 1 and Type 2 diabetes - and for many people it is a genuinely life-changing first step. For a broader introduction to diabetes and the support available in South Africa, read our guide: Understanding Diabetes - A Guide for Newly Diagnosed South Africans.
Here is a detailed look at how a low-carb or banting diet can benefit each type of diabetes - and what to be aware of before making the switch.
How Does a Low-Carb Diet Work for Diabetes?
When you eat carbohydrates, your body breaks them down into glucose, which enters the bloodstream and raises blood sugar levels. In people without diabetes, insulin is released by the pancreas to move this glucose into the body's cells for energy. In diabetics, this process is disrupted - either because the pancreas produces little or no insulin (Type 1) or because the body has become resistant to insulin (Type 2).
By reducing carbohydrate intake, less glucose enters the bloodstream in the first place - making blood sugar levels easier to manage regardless of which type of diabetes you have.
Benefits of a Low-Carb Diet for Type 1 Diabetics
Type 1 diabetes is an autoimmune condition in which the pancreas produces no insulin. People with Type 1 diabetes must take insulin - either through injections or an insulin pump - to manage their blood sugar levels. A low-carb diet can make this management significantly easier:
✔ Reduced insulin requirements - less carbohydrate in the diet means less glucose entering the bloodstream, which means less insulin is needed to manage blood sugar levels. This can reduce the risk of over-dosing on insulin and experiencing dangerous low blood sugar (hypoglycaemia).
✔ More stable blood sugar levels - one of the biggest challenges for Type 1 diabetics is the unpredictable spikes and crashes in blood sugar that come with eating carbohydrates. A low-carb diet significantly reduces these fluctuations, making blood sugar levels more predictable and easier to manage day to day.
✔ Reduced risk of long-term complications - chronically elevated blood sugar levels are the primary driver of the long-term complications associated with diabetes, including heart disease, kidney damage, nerve damage and vision loss. Better blood sugar control through a low-carb diet can reduce the risk of these complications over time.
✔ Greater confidence in dosing - many Type 1 diabetics on low-carb diets report that calculating and adjusting insulin doses becomes more straightforward when blood sugar fluctuations are smaller and more predictable.
Important: Type 1 diabetics who switch to a low-carb diet must work closely with their doctor or endocrinologist, as insulin doses will need to be carefully adjusted. Never change your insulin regimen without medical supervision.
Benefits of a Low-Carb Diet for Type 2 Diabetics
Type 2 diabetes is characterised by insulin resistance - the body produces insulin but the cells don't respond to it effectively. A low-carb diet can have a particularly powerful impact on Type 2 diabetes:
✔ Improved insulin sensitivity - reducing carbohydrate intake lowers the demand on the body's insulin system, which can help to reduce insulin resistance over time. Many Type 2 diabetics see significant improvements in their blood sugar readings within weeks of adopting a low-carb diet.
✔ Lower blood sugar levels - with less glucose entering the bloodstream from food, blood sugar levels naturally decrease. Some Type 2 diabetics are able to reduce or eliminate their diabetes medication under medical supervision as a result of dietary changes.
✔ Weight loss - excess body weight is one of the primary drivers of insulin resistance in Type 2 diabetes. A low-carb diet is highly effective for weight loss, particularly around the abdomen, which can directly improve insulin sensitivity and blood sugar control.
✔ Reduced cardiovascular risk - Type 2 diabetes significantly increases the risk of heart disease and high blood pressure. A low-carb diet has been shown to improve several cardiovascular risk markers, including triglycerides, HDL cholesterol and blood pressure.
✔ Potential for remission - there is growing clinical evidence that Type 2 diabetes can go into remission in some people through significant dietary changes and weight loss. While this is not guaranteed and varies from person to person, a low-carb diet is one of the most studied approaches for achieving this outcome.
Important: Type 2 diabetics on medication must consult their doctor before starting a low-carb diet, as blood sugar lowering medication doses may need to be adjusted to avoid hypoglycaemia.
What Does a Low-Carb Diet Look Like for Diabetics?
A low-carb diet for diabetics focuses on:
✔ Eliminating sugar in all forms - read our guide on hidden sugar names to watch out for
✔ Reducing or eliminating bread, pasta, rice, cereals and other grains
✔ Eating plenty of protein - meat, fish, eggs and full-fat dairy
✔ Eating healthy fats - butter, olive oil, avocado, nuts and seeds
✔ Eating low-carb vegetables - leafy greens, broccoli, cauliflower, courgette and peppers
✔ Choosing low-GI sweeteners over sugar - erythritol, xylitol, stevia and isomalt are all diabetic-friendly choices
For a detailed guide to getting started, read our post: What is the Banting Diet - A Complete Guide for South Africans.
Low-Carb Meal Ideas for Diabetics
Breakfast: Eggs with spinach and avocado. Plain full-fat Greek yoghurt with berries and chia seeds. Sugar-free drinking chocolate with full-fat milk.
Lunch: Large salad with grilled chicken, avocado, feta and olive oil dressing. Lettuce wraps with tuna and mayo. Cauliflower soup with cream and cheese.
Dinner: Grilled steak or fish with roasted low-carb vegetables. Lamb chops with cauliflower mash and green beans. Chicken thighs with broccoli and butter sauce.
Snacks: Nuts, biltong, cheese, hard-boiled eggs, celery with cream cheese and sugar-free treats from Caring Candies.
Practical Tips for Getting Started
✔ Clear out red list foods from your kitchen - bread, pasta, rice, cereals and sugar
✔ Plan meals a week in advance so you are never caught without options
✔ Read every label - sugar hides in sauces, dressings and processed meats
✔ Stock up on genuinely sugar-free snacks to manage cravings between meals
✔ Monitor your blood sugar before and after meals when trying new foods - individual responses vary
✔ Learn to spot hidden sugar names - read our guide: Sugar-Free vs Sucrose-Free vs No Added Sugar - What's the Difference?
✔ For a full step-by-step transition guide, read: How to Transition to a Sugar-Free, Low-Carb Lifestyle
What About Sweet Treats on a Diabetic Low-Carb Diet?
Going low-carb does not mean giving up sweetness entirely. At Caring Candies we have been making diabetic-friendly treats for over 20 years - and our customers tell us that having access to safe, enjoyable sweet treats makes sticking to a low-carb lifestyle much easier.
✔ Our hard candy and lollipop range is made with isomalt - GI of 9, zero nett carbs
✔ Our no added sugar chocolate range is made with powdered maltitol - suitable for diabetics in moderation
✔ Our Sugar-Free Sweet Cravings Survival Kit was created specifically to help people manage sugar cravings during the transition to a low-carb lifestyle
All our own-branded products are Kosher and Halaal certified, made in Cape Town and delivered nationwide across South Africa.