The question of whether EMFs cause cancer has been a topic of extensive research and debate. The International Agency for Research on Cancer (IARC), part of the World Health Organization (WHO), has classified low-frequency EMFs as "possibly carcinogenic to humans" (Group 2B) based on limited evidence in humans and less-than-sufficient evidence in experimental animals. However, the evidence linking high-frequency EMFs, like those from X-rays and gamma rays, to cancer is more robust, as these are known carcinogens.