Jul 10, 2017 · 1 min read
I think you might misunderstand the IARC classifications: “These categories refer only to the strength of the evidence that an exposure is carcinogenic and not to the extent of its carcinogenic activity (potency).”
http://monographs.iarc.fr/ENG/Preamble/currentb6evalrationale0706.php
In other words the list is not meant to compare risks. Microwave-frequency radiation is classified 2b as there is evidence that exposure might lead to glioblastoma, according to IARC.
