Sucralose (Splenda)

Sucralose breaks down into a genotoxic compound that directly damages DNA—a 2023 study in the Journal of Toxicology found sucralose-6-acetate harms gut epithelial cells at levels far lower than typical consumption. This compound is 30% more reactive in the digestive tract than the average artificial sweetener, and additional research shows sucralose impairs glucose tolerance and alters gut microbiome composition. Unlike #2 Aspartame, which only carries a possible cancer link, sucralose actively triggers insulin responses despite containing zero calories, making it a metabolic wildcard.