Animal study · Nutrition · 6 Sept 2026
Scientists discover a hidden problem with this popular sugar substitute
Source: ScienceDaily
What the research found
Study (zebrafish; ScienceDaily coverage 6 Sept 2026 of a Science Signaling paper). Washington University in St. Louis researchers report that sorbitol—used in sugar-free gum and candy, and made in the gut from glucose after meals—can reach the liver and convert toward a fructose derivative. Gut Aeromonas strains can chew some of it up; high loads can overwhelm that filter. This is animal and mechanistic work, not a human trial proving liver disease from gum. It is a caution that “sugar-free” is not metabolically free. Food choices belong with a clinician if you have diabetes or fatty-liver disease.
Evidence level: Animal study. Results in animals or cells often don't carry over to people.
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