Stevia leaf extract has been rigorously tested in over 200 scientific studies and given the stamp of approval by multiple regulatory organizations around the globe. For a complete list of agencies that have approved stevia’s safety, please click here.
The majority of scientific research on stevia uses high purity stevia extracts. Confusion has resulted in the past when research conclusions about stevia were drawn based on studies testing crude stevia extracts. In some countries, crude stevia extracts or whole stevia plant leaves are often sold as dietary supplements, but it is important to note that only high purity stevia leaf extract has been evaluated and approved for use as an ingredient in food and beverages by multiple regulatory agencies throughout the world. Throughout this website, we will refer to high purity stevia leaf extract simply as stevia.
Stevia has also been well studied and approved for the whole family, including pregnant women and those with diabetes.
Based on this of body of research, regulatory authorities have also established an Acceptable Daily Intake (ADI) which applies to all age groups. The ADI for stevia is set more specifically for steviol glycosides, the sweet components extracted from stevia the leaf, and is expressed as the steviol equivalents of 4 milligrams per kilogram of body weight per day. The reason for the concept of “steviol equivalents” is because the different glycosides are unique in their structure and have to balance out to one overall metabolic equation. All said, this equates to approximately 12 milligrams of high purity stevia extracts per kilogram of body weight per day. So what does this really mean?
A 150-pound (70 kg) person would need to consume approximately 40 packets of a tabletop stevia sweetener per day for the rest of his or her life to reach the ADI.