AI Insight
A laboratory study examining 39 sweeteners found that many can directly alter gut bacterial growth. Researchers documented over 100 instances where sweeteners exhibited different effects when combined with other substances such as medications, caffeine, or flavorings. The combination of isosteviol (a sweetener derivative) and duloxetine (an antidepressant) showed particularly pronounced negative effects, decreasing beneficial bacteria populations and reducing overall microbial diversity.
Why it matters
This research has important implications for people who regularly consume sweeteners, particularly those taking medications, as these combinations may inadvertently affect gut health. The findings suggest that current safety assessments of sweeteners may need to consider interactive effects with commonly consumed substances rather than evaluating sweeteners in isolation.
Understand the Science
A large laboratory study found that many commonly used sweeteners can directly change the growth of gut bacteria. Researchers identified more than 100 cases in which sweeteners behaved differently when combined with medications, caffeine, or flavorings. The combination of isosteviol and the antidepressant duloxetine was especially disruptive, reducing beneficial bacteria and overall microbial diversity.
Source: Scientists tested 39 sweeteners and found unexpected gut effects