Just ask glyphosate. In 2015, based on scant evidence, the IARC declared the active ingredient in many herbicides, including Roundup, a “probable” human carcinogen. It didn’t matter that literally every other regulatory agency in the world looked into the data and reached the opposite conclusion.
Although some people complain of side effects like headaches and dizziness, the Food and Drug Administration has concluded that aspartame is safe for most people to consume in moderation. Most importantly, it doesn’t cause cancer.
But that didn’t stop the IARC from concluding [recently] — based on what it calls “limited evidence” related to a type of liver cancer — that aspartame is “probably” carcinogenic to humans. As Food Science Babe explained, this is a load of rubbish. She points out that it’s one of the most widely studied food additives in the world.