Multiple independent health regulatory bodies, through repeated systematic reviews of the scientific literature, consistently conclude that low-calorie sweeteners are safe for human consumption at typical intake levels.

Study: Assessing the in vivo data on low/no-calorie sweeteners and the gut microbiota.

This study looked at whether artificial sweeteners mess up your gut bacteria and found that even if they do a little in mice, it doesn’t happen in people at normal eating levels—and it doesn’t make people sick. So yes, health experts are right: these sweeteners are safe.

Study: Dietary Guidance, Sensory, Health and Safety Considerations When Choosing Low and No-Calorie Sweeteners

This study says low-calorie sweeteners are safe to use in foods and drinks, which matches what health agencies say — so it supports the claim.

Study: Potential Effects of Low-Calorie Sweeteners on Human Health

The study says some artificial sweeteners might cause health problems like blood sugar issues or gut changes, so we shouldn’t assume they’re definitely safe — even if regulators say they are.