Erythritol, a widely used sugar substitute found in many low-carb and sugar-free products, may not be as harmless as once believed. New research from the University of Colorado Boulder reveals that even small amounts of erythritol can harm brain blood vessel cells, promoting constriction, clotting, and inflammation—all of which may raise the risk of stroke.
No. I don’t have any studies on hand, but the data that I’m aware of says that stevia is one of the small few that actually helps your gut biome. However, too high of a quantity can lead to other issues (I think related to the heart).