What the latest research on artificial sweeteners says

Artificial sweeteners are being added to a growing number of foods to reduce their sugar content while maintaining their appealing taste. But a growing body of research suggests these non-nutritive sweeteners may not always be a healthier and safer option. So what is our best option if we want to enjoy sweet-tasting foods without the harms of eating sugar?

Artificial sweeteners were originally developed as chemicals to stimulate our sweet-taste sensing pathway. Like sugar molecules, these sweeteners act directly on our taste sensors in the mouth. They do this by sending a nerve signal to the body that a high-carbohydrate food source has been consumed – telling the body to break it down to use for energy.

In the case of sugar consumption, this also stimulates our dopaminergic system. This is the part of the brain responsible for motivation and reward, linked to sugar cravings. From an evolutionary perspective, this means we’re hardwired to seek out high-sugar food for a source of energy and to ensure our survival. However, excessive consumption of sugar is well known to lead to health problems, such as metabolic disruption which can cause obesity and diabetes.

Similarly, when artificial sweeteners, rather than sugar, cause this stimulation, there’s increasing evidence of similar metabolic imbalances. This happens despite the fact...

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