ARTIFICIAL SWEETENERS: CAN SUGAR SUBSTITUTES INCREASE DIABETES RISK?

Artificial sweeteners have become a staple

Millions of Australians consume artificial sweeteners every day, but researchers say we still don't fully understand how these sugar substitutes affect the body's metabolism.

Often marketed as a healthier alternative to sugar, they're commonly chosen by people trying to lose weight or better manage their blood sugar levels.

But researchers are now taking a closer look at whether these popular sugar substitutes could be affecting the body in ways we don't yet fully understand.

A new study from the University of Adelaide is investigating how five of the world's most widely used artificial sweeteners affect glucose regulation and whether they could contribute to diabetes risk.

Artificial sweeteners and blood sugar

The research will examine aspartame, stevia, sucralose, saccharin and acesulfame potassium, all commonly found in supermarket foods and drinks.

Rather than simply looking at calorie intake, researchers will investigate how the sweeteners interact with organs involved in blood sugar control, including the intestine, pancreas and kidneys, as well as the gut microbiome.

Associate Professor Tongzhi Wu said the aim is to better understand how different sweeteners affect the body's glucose metabolism.

"Many people who are looking to manage their weight or sugar levels choose low-calorie sweeteners because they believe they're healthier than sugar," he said.

"But while sweeteners were designed to replace sugar without the extra calories, growing evidence suggests they may not be as metabolically neutral as once thought."

The study will explore whether artificial sweeteners alter glucose absorption, glucose excretion or the composition of gut bacteria, and whether these changes influence blood sugar control.

Artificial sweeteners are under growing scrutiny

Artificial sweeteners are sold under familiar brand names including NutraSweet, Natvia, Splenda, Sugarine and Equal.

Their popularity continues to grow as consumers look for ways to reduce sugar intake without sacrificing sweetness.

Yet despite their widespread use, scientists say many questions remain about their long-term effects on metabolism.

Co-researcher Professor Chris Rayner said reducing sugar remains important, particularly given excess body weight is one of the biggest risk factors for type 2 diabetes.

"People often think of sweeteners as a simple swap for sugar, but the science isn't that straightforward," he said.

"While these products can help reduce sugar intake, we still don't fully understand how they influence the body's metabolism over the long term."

Diabetes research

Diabetes is one of the world's fastest-growing chronic diseases, affecting more than 462 million people globally.

In Australia, almost 1.2 million people are living with diabetes, making improved prevention strategies an ongoing public health priority.

Researchers hope the findings will identify whether some artificial sweeteners affect the body differently from others and provide evidence to guide future dietary recommendations.

The study is expected to be completed later this year, with researchers currently seeking volunteers to take part.

While the findings are yet to emerge, experts say the research highlights an important point: although artificial sweeteners may reduce sugar consumption, scientists are still working to understand exactly how they affect the body beyond the calories they save.