Do the research and you will find that the reason the original was debunked was because the amount given to lab rats was very excessive. Anything given in very large, unrealistic doses can cause adverse effects. Saccharin was thought to be carcinogenic because it caused cancer in lab rats. It wasn't until they started doing realistic doses and studies that they changed that. Like I said, as a diabetic, I have researched ALL facets of stevia, not just the obvious sugar substitute.