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Sugar-free and sweet as can be…or not?

Sweets and chocolates labelled ‘sugar-free’ or ‘no-sugar-added’ appear in abundance around Easter. Whether described as ‘diabetic-friendly’ or marketed as a healthier option than traditional confectionery, the market for these options remains small so it may be tempting to stock up when you see them in-store. But it’s important to know what you might be getting into – and indeed, what might be getting into you – when you reach for the sugar-free treats. Key ingredients in sugar-free chocolates and candies can affect both your glucose levels and your digestion, so it’s important to find a balance if these are part of your diet.

Effects on glucose levels

While sugar-free or no-sugar-added confectionery doesn’t have refined sugar, that doesn’t mean it is free of carbohydrates. Of the major components of foods we eat, namely, fats, proteins and carbohydrates, carbohydrates have the most direct impact on glucose levels. If you look carefully at the packaging for sugar-free sweets, you’ll see the number of carbohydrates per 100 g of the product (possibly also per serving) listed on the back of the packet. If a diet soft drink’s label says it has 0 g of carbohydrates, it’s truly not going to affect your glucose levels. But if a sugar-free chocolate bar has 35 g carbohydrates, your blood sugar will show it.

So how can manufacturers call their products sugar-free if they have carbohydrates? The answer lies in the sweetening ingredients they use, typically sugar alcohols like sorbitol, mannitol, maltito or erythritol. These substances keep their sweet taste despite being cooked at high temperatures. Meanwhile, common carbohydrate-free sweeteners commonly used in diet soft drinks tend not to fare so well when heated. Sugar alcohols are not considered sugar in the traditional sense so food manufacturers can use them and still proclaim their product to be sugarless.

Sugar alcohols tend to be digested more slowly than regular sugar, so people with type 2 diabetes who do not take insulin at meals may find they don’t see much of an impact on their glucose levels after eating small amounts. But people who take insulin at meals – whether with type 1 or type 2 diabetes – need to consider whether and when to give insulin to cover these carbs, and how much to dose, because sugar alcohols are not absorbed in the same way as carbohydrates from sugar. It’s worth chatting to a friendly dietitian with experience in diabetes to get personalised advice, but an article link  from the University of California at San Francisco gives some helpful general principles.

 

Impact on digestion

Sugar alcohols can cause an upset stomach in some people; for example, bloating, flatulence and diarrhoea. This is because the sugar alcohol is not completely absorbed in the digestive system. This lack of absorption causes fermentation in the intestines. Due to this fermentation, gas is produced, which can cause gastrointestinal discomfort. Even if you are not very sensitive to sugar alcohols, consuming large amounts can cause cramps, diarrhoea and dehydration. As with all foods we eat, it’s important to keep an eye on your portion size.

 

Finding a balance

Sugar alcohols may not be the answer to all our sweet cravings, but that doesn’t mean they are out of the question. For example, if sugar-free cough sweets work well for you, by all means fit them into your diet and enjoy them. But if you’re torn between the regular and the sugar-free options in the sweets aisle of your local supermarket, you may be better off with the original version.

As this video link  from Diabetes.co.uk explains, there are no regulations to ensure sugar-free or no-sugar added foods have any actual health benefits. Nor are they necessarily lower in calories. But the ‘diabetic’ version of your favourite sweet may make your purse a little lighter, as they are often more expensive.

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* Scanning the sensor to obtain glucose values does not require lancets ×
*1. Scanning the sensor to obtain glucose values does not require lancets 2. A finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels, or if hypoglycemia or impending hypoglycemia is reported but the symptoms do not match the system readings. ×

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