Stevia in chocolate: what the sources say
Stevia is a sweetener you may meet on the ingredient list of a sugar-free or dark chocolate. This page collects what health bodies and studies say about its calories, blood sugar and daily limit.
General information only. If you have diabetes or another medical condition, ask your doctor or dietitian before you change what you eat. Read on 2026-10-16.
What stevia is
MedlinePlus, the health information site of the US National Library of Medicine, says that stevia is a non-nutritive sweetener that provides zero calories since it is not broken down by the body for energy. It adds that stevia is made from the plant Stevia rebaudiana, which is grown for its sweet leaves. It also says that stevia is generally recognized as safe (GRAS) by the FDA. The same page says that there is not enough evidence at this time to determine if sugar substitute use leads to weight loss or lower heart disease risk. It adds that some research suggests that sugar substitutes may lead to an increase in weight, and further research is still needed.
What the WHO says about non-sugar sweeteners
The World Health Organization (WHO), in its 2023 news release on a new guideline, says that the guideline recommends against the use of non-sugar sweeteners (NSS) to control body weight or reduce the risk of noncommunicable diseases. It adds that common NSS include acesulfame K, aspartame, advantame, cyclamates, neotame, saccharin, sucralose, stevia and stevia derivatives. It also says that the recommendation applies to all people except individuals with pre-existing diabetes. The same page says that the recommendation has been assessed as conditional, because the link observed in the evidence between NSS and disease outcomes might be confounded by baseline characteristics of study participants and complicated patterns of NSS use.
What trials of stevia show for blood sugar
A 2019 systematic review and meta-analysis in Nutrients on steviol glycosides says that seven studies, nine randomised controlled trials, with a total of 462 participants were included, covering outcomes such as body mass index, blood pressure, fasting blood glucose, lipids and glycated haemoglobin (HbA1c). It adds that no significant effect of HbA1c was found, and the effect on fasting blood glucose was a non-significant reduction in favour of steviol glycosides. It also says that heterogeneity was significant for several analyses, and more studies investigating the effect of steviol glycosides on human health, particularly type 2 diabetic biomarkers, are warranted.
The daily limit in the EU
The European Food Safety Authority (EFSA), in a 2024 opinion on steviol glycosides (E 960a-d), says that the Panel concluded that there is insufficient justification to increase the current acceptable daily intake (ADI) of 4 mg/kg body weight per day, expressed as steviol equivalents.
The ADI is stated for the steviol part of the sweetener and not for a bar of chocolate, and the amount in a product is on its label, if at all. The label guide shows where to look.
Sources
Checked on 2026-10-16 against MedlinePlus: Sweeteners - sugar substitutes, WHO news release, 15 May 2023, Nutrients 2019, steviol glycosides meta-analysis (PubMed), EFSA 2024 opinion on steviol glycosides (PubMed). Read the source again before you rely on a number, because rules and studies change.