Decades after aspartame was approved for use in the United States, the sweetener’s safety is getting another look by global health bodies assessing its potential links to cancer.

The World Health Organization’s International Agency for Research on Cancer analyzed the potential carcinogenic effects of the sweetener this month. A separate WHO and United Nations committee, the Joint Expert Committee on Food Additives, is now updating its risk assessment, including what it considers to be an acceptable daily intake. Their findings have not been made public; they will be released together July 14.