The EPA suddenly decided that saccharin is not a carcinogen back in 2010. Must mean that it’s a worse carcinogen than originally estimated.
Saccharin was never a carcinogen. The original finding was predicated on laboratory "research" that fed rats 800 times the normal daily dose of saccharin in order to achieve the carcinogen label.
Many years after saccharin was suposed to come off the market, the makers of saccharin were able to prove what the research lab had done and get the finding reversed. Today, saccharin is still available as an artificial sweetner.