Do not use sweeteners for weight control, World Health Organisation says

‘Undesirable effects’ linked to long-term use, such as an increased risk of type two diabetes

The WHO has said sweetened drinks provide no nutritional benefits but are linked with an increased risk of type two diabetes.
The WHO has said sweetened drinks provide no nutritional benefits but are linked with an increased risk of type two diabetes.

People should avoid using sweeteners to help with weight control, global health leaders have said.

Low or no calorie sweeteners are used instead of sugar to sweeten foods and drinks and can be found in products including desserts and ready meals, cakes, drinks, chewing gum and toothpaste.

Many people also add non-sugar sweeteners to their own food and beverages as a sugar alternative.

But new guidance from the World Health Organisation (WHO) urges people not to use non-sugar sweeteners (NSS) as a tool for weight control.

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It said consumption of free sugars has been linked to rising numbers of people who are overweight or obese as well as increases in cases of type two diabetes, cardiovascular diseases, cancer and tooth decay.

With a focus on reducing sugar intake, the WHO said “interest in non-sugar sweeteners as a possible alternative has intensified”.

Because of the ability of artificial and natural sweeteners to impart a sweet taste without calories, some have argued they can help to prevent people becoming overweight or obese. But others have suggested they may increase risk.

As a result, the WHO undertook a review of studies that have examined the impacts of sweeteners.

In all, WHO researchers examined data from 283 studies conducted in adults, children, pregnant women or mixed populations. It said the results suggest the “use of NSS does not confer any long-term benefit in reducing body fat in adults or children”.

But the authors said that in the short term, NSS use may lead to minor weightloss “when their use leads to a reduction in total energy intake”.

The WHO also said there could be “undesirable effects” linked to long-term use, such as an increased risk of type two diabetes, cardiovascular diseases and death. But the authors said further research is needed.

“Replacing free sugars with NSS does not help with weight control in the long term,” said Francesco Branca, the WHO’s director for nutrition and food safety. “People need to consider other ways to reduce free sugars intake, such as consuming food with naturally occurring sugars, like fruit, or unsweetened food and beverages.

“NSS are not essential dietary factors and have no nutritional value. People should reduce the sweetness of the diet altogether, starting early in life, to improve their health.”

As a result of the study, the WHO released a new conditional guideline recommending against the use of NSS to control body weight or reduce the risk of noncommunicable diseases. The recommendation applies to everyone except those with pre-existing diabetes.

It also applies to personal care and hygiene products containing NSS, such as toothpaste, skin cream, and medications. - PA