Radiofrequency (RF) Fields: Possibly, Probably, or Definitely Carcinogenic — The Evidence Mounts Toward the Latter.
The International Agency for Research on Cancer (IARC) generally categorizes agents (e.g., substances or radiation) into four (4) categories in terms of cancer causing ability:
Group 1: Carcinogenic to humans.
Group 2A: Probably carcinogenic to humans.
Group 2B: Possibly carcinogenic to humans.
Group 3: Not classifiable as to carcinogenicity in humans.