04/18/2026
Let’s ask the Dietitian!
Question:
Is stevia a safe alternative to sugar, and how much can you have per day?
Answer:
When it comes to whether Stevia is a safe and acceptable alternative to sugar, the short and “sweet” answer is yes.
Finding the right sugar alternative can be daunting, given the number of options available and ongoing research on sugar and its alternatives. Not to mention personal preferences and needs.
Stevia has grown in popularity for its natural availability from the Stevia rebaudiana plant and its noncaloric properties. The plant produces steviol glycosides in its leaves, particularly Rebaudioside A, which provides the sweet flavor.
Steviol glycosides are one of three plant-based sugar alternatives classified as Generally Recognized as Safe (GRAS), a designation granted only after the Food and Drug Administration is presented with sufficient research on their safety.
Rebaudioside A is 300 times sweeter than table sugar (sucrose), meaning we need a much smaller amount of the sweetener to achieve the desired sweetness. So how much is safe to consume per day?
There is an Acceptable Daily Intake (ADI) set for all alternative sweeteners. For stevia, the dose is 12 milligrams per kilogram (mg/kg) body weight, or 27 packets daily for someone weighing 132 pounds. Keep in mind that this already accounts for an additional “safety factor” as a buffer to ensure greater safety in the dosage consumed.
Unlike artificial sweeteners such as sucralose, which are lab-made, stevia is plant-based. This has led to early research to see how it is metabolized and what properties it may offer humans, such as anti-inflammatory or antioxidant benefits.
Research on the benefits of stevia is ongoing, and while some studies show promising results, many rely on animal and cellular models rather than humans, and use small sample sizes, making it difficult to draw conclusions.
One population that is particularly interested in sugar alternatives may be those with prediabetes or diabetes. Stevia alone should have minimal effects on glucose and insulin levels and can be an additional tool to aid in glucose management. And since it’s heat-stable, it can even be used in cooking and baking!
— Kirsten Seele, RD