Are stevia sweeteners artificial?
“I think that the FDA didn’t require good-enough testing,” Michael F. Jacobson, PhD, executive director of the nonprofit Center for Science in the Public Interest (CSPI), says in an email to WebMD. “That said, [Rebiana] is probably safe.” In April 2010, the European Food Safety Authority (EFSA) announced that studies showed no risk of toxicity from highly purified stevia sweeteners. The CSPI still argues that more testing of these products is warranted.