The scientific consensus, based on extensive research conducted by reputable health organizations and regulatory bodies, is that there is currently no conclusive evidence to support the claim that exposure to Wi-Fi, cell phones, or other microwave frequencies increases the risk of cancer in humans.
Numerous studies have been conducted over several decades to investigate the potential health effects of radiofrequency (RF) electromagnetic fields, which include Wi-Fi and cellular signals. These studies have included both laboratory research and epidemiological studies involving human populations. So far, the overall body of scientific evidence does not demonstrate a clear link between RF exposure from these devices and the development of cancer.
The International Agency for Research on Cancer (IARC), a specialized agency of the World Health Organization (WHO), conducted a comprehensive review of the available scientific literature in 2011. They classified RF electromagnetic fields as "possibly carcinogenic to humans" (Group 2B). This classification indicates that there is limited evidence suggesting a possible association, but the overall evidence is still insufficient to establish a causal relationship.
Since then, further studies and reviews have been conducted, including the most recent evaluation by the IARC in 2019, which reaffirmed the classification of RF fields in Group 2B. It is important to note that Group 2B classification also includes a wide range of other agents such as coffee and pickled vegetables.
Health organizations, including the WHO, the U.S. Food and Drug Administration (FDA), and the Federal Communications Commission (FCC), among others, continue to monitor and evaluate scientific research in this area. They generally agree that while further studies are warranted, the current evidence does not support the claim that Wi-Fi, cell phones, or other microwave frequencies pose a significant cancer risk to humans when used within recommended exposure limits.
However, it is always advisable to follow the safety guidelines provided by regulatory agencies, such as maintaining a reasonable distance from Wi-Fi routers and using hands-free options or speakerphone when talking on cell phones if concerns arise.