The daily limit, and why it was not raised
European reviewers set a daily limit of 4mg per kg of body weight, measured as steviol, in 2010, and have kept it since. In 2024 an industry application asked for it to be raised to 6 or 16mg per kg to allow wider use. Reviewers refused, finding no good case for an increase. Their estimates showed that with the proposed extra uses, toddlers who eat the most could reach 6.9mg per kg a day, well over the limit.
Reviewers declined to raise the daily limit from 4mg per kg of body weight, and noted the proposed wider use would push the heaviest-eating toddlers over it, to about 6.9mg per kg a day.
2024Regulator reviewEFSA Panel on Food Additives and Flavourings (FAF), EFSA Journal 2024:9045
Gut bacteria
Lab and animal studies have raised the question of whether high concentrations change gut bacteria. At normal food amounts, evidence in people is limited and the picture is not settled.
Lab and animal studies found high concentrations of steviol glycosides can change gut bacteria, but whether this happens at normal intakes in people has not been established.
2019Lab and animal studyRuiz-Ojeda et al., Advances in Nutrition