Stevia is the common name for extracts from the plant Stevia rebaudiana. In the U.S., a purified component form of the plant — called rebaudioside A (rebiana) — is "generally recognized as safe" by the Food and Drug Administration (FDA) and may be used as an artificial sweetener in foods and beverages.
Refined stevia preparations (Pure Via, Truvia, others) are considered nonnutritive sweeteners and, as such, may appeal to people trying to lose weight. But there's no evidence that they offer an advantage for weight loss over other artificial sweeteners. In addition, these highly refined stevia extracts may cause mild side effects, such as nausea or a feeling of fullness.
The FDA hasn't approved whole-leaf stevia or crude stevia extracts for use as food additives because of concerns about possible health effects. In particular, the FDA has concerns about the effects of whole-leaf or crude stevia on blood sugar control, the kidneys, and the cardiovascular and reproductive systems.
Remember that while sugar substitutes, such as refined stevia preparations, may help with weight management, they aren't a magic bullet and should be used only in moderation. If you eat too many sugar-free foods, you can still gain weight if they have other ingredients that contain calories.
Oct. 18, 2012
See more Expert Answers
- Is stevia an FDA-approved sweetener? U.S. Food and Drug Administration. http://www.fda.gov/AboutFDA/Transparency/Basics/ucm214864.htm. Accessed July 20, 2012.
- Lemus-Mondaca R, et al. Stevia rebaudiana Bertoni, source of a high-potency natural sweetener: A comprehensive review on the biochemical, nutritional and functional aspects. Food Chemistry. 2012;132:1121.
- Nonnutritive sweeteners: Current use and health perspectives. A Scientific Statement from the American Heart Association and the American Diabetes Association. http://circ.ahajournals.org/content/early/2012/07/09/CIR.0b013e31825c42ee.citation. Accessed July 20, 2012.
- What refined stevia preparations have been approved by FDA to be used as a sweetener? U.S. Food and Drug Administration. http://www.fda.gov/AboutFDA/Transparency/Basics/ucm214865.htm. Accessed July 20, 2012.
- Stevia. Natural Medicines Comprehensive Database. http://www.naturaldatabase.com. Accessed July 20, 2012.
- Position of the Academy of Nutrition and Dietetics: Use of nutritive and nonnutritive sweeteners. Journal of the Academy of Nutrition and Dietetics. 2012;112:739.
- Zeratsky KA (expert opinion). Mayo Clinic, Rochester, Minn. July 20, 2012.