Stevia, also called Stevia rebaudiana, is a plant that is a member of the chrysanthemum family, a subgroup of the Asteraceae family (ragweed family). There’s a big difference between the stevia you buy at the grocery store and the stevia you may grow at home.
Stevia products found on grocery store shelves, such as Truvia and Stevia in the Raw, don’t contain whole stevia leaf. They’re made from a highly refined stevia leaf extract called rebaudioside A (Reb-A).
In fact, many stevia products have very little stevia in them at all. Reb-A is about 200 times sweeter than table sugar.
Sweeteners made with Reb-A are considered “novel sweeteners” because they’re blended with different sweeteners, such as erythritol (a sugar alcohol) and dextrose (glucose).
For example, Truvia is a blend of Reb-A and erythritol, and Stevia in The Raw is a blend of Reb-A and dextrose (packets) or maltodextrin (Bakers Bag).
Some stevia brands also contain natural flavors. The U.S. Food and Drug Administration (FDA)Trusted Source doesn’t object to the term “natural flavors” if the related ingredients have no added colors, artificial flavors, or synthetics.
Still, ingredients that fall under the “natural flavor” umbrella may be highly processed. Many argue that this means there’s nothing natural about them.
You can grow stevia plants at home and use the leaves to sweeten foods and beverages. Reb-A sweeteners are available in liquid, powder, and granulated forms. For purposes of this article, “stevia” refers to Reb-A products.
Stevia is a nonnutritive sweetener. This means it has almost no calories. If you’re trying to lose weight, this aspect may be appealing.
However, to date, research is inconclusive. The impact of nonnutritive sweetener on an individual’s health may depend on the amount that is consumed, as well as the time of day it’s consumed.
If you have diabetes, stevia may help keep your blood sugar levels in check.
One 2010 studyTrusted Source of 19 healthy, lean participants and 12 obese participants found that stevia significantly lowered insulin and glucose levels. It also left study participants satisfied and full after eating, despite the lower calorie intake.
However, one noted limitation in this study is that it took place in a laboratory setting, rather than in a real-life situation in a person’s natural environment.
And according to a 2009 study, stevia leaf powder may help manage cholesterol. Study participants consumed 20 milliliters of stevia extract daily for one month.
The study found stevia lowered total cholesterol, LDL (“bad”) cholesterol, and triglycerides with no negative side effects. It also increased HDL (“good”) cholesterol. It’s unclear if occasional stevia use in lower amounts would have the same impact.
The FDATrusted Source says stevia glycosides, such as Reb-A, are “generally recognized as safe.” They haven’t approved whole-leaf stevia or crude stevia extract for use in processed foods and beverages due to a lack of safety information.
There’s concern that raw stevia herb may harm your kidneys, reproductive system, and cardiovascular system. It may also drop blood pressure too low or interact with medications that lower blood sugar.
Although stevia is considered safe for people with diabetes, brands that contain dextrose or maltodextrin should be treated with caution.
Dextrose is glucose, and maltodextrin is a starch. These ingredients add small amounts of carbs and calories. Sugar alcohols may also slightly tip the carb count.
If you use stevia now and then, it may not be enough to impact your blood sugar. But if you use it throughout the day, the carbs add up.
A 2019 studyTrusted Source reported a possible link between nonnutritive sweeteners, including stevia, and disruption in beneficial intestinal flora. The same study also suggested nonnutritive sweeteners may induce glucose intolerance and metabolic disorders.
As with most nonnutritive sweeteners, a major downside is the taste. Stevia has a mild, licorice-like taste that’s slightly bitter. Some people enjoy it, but it’s a turn-off for others.
In some people, stevia products made with sugar alcohols may cause digestive problems, such as bloating and diarrhea.