A comprehensive review by the World Health Organization (WHO) has found no evidence linking mobile phone use to brain cancer. The extensive study, which analyzed research from 22 countries, found no correlation between the use of mobile phones, workplace radio frequency electromagnetic field (RF-EMF) transmission equipment, cell towers, and the development of brain and pituitary cancers or leukemia in adults or children.
This finding counters previous assessments by the International Agency for Research on Cancer (IARC) which labeled mobile phones as “possibly carcinogenic.” The WHO review, however, found no increased risk of gliomas, meningiomas, and acoustic neuromas, nor of pituitary and salivary cancers or leukemia, associated with mobile phone use.
The review, a meta-analysis of 63 articles published in 22 countries between 1994 and 2022, investigated the health effects of exposure to RF-EMF transmitted by mobile phones. These devices, along with TVs and baby monitors, emit RF-EMF, but the review suggests these emissions are harmless, incapable of breaking chemical bonds, causing ionization in our bodies, or damaging our DNA.
Mobile phones are low-powered RF-EMF transmitters that communicate via radio waves through cell towers. Whenever a phone is turned on, it acts as a receiver of RF-EMF signals. However, when completely switched off, it neither transmits nor receives RF-EMF fields.
The study also addressed concerns about exposure from fixed-site RF-EMF transmitters, such as broadcasting antennas or cell towers, finding no link to childhood leukemia or pediatric brain tumors. Similarly, there was no evidence that workplace RF-EMF transmitters increased the incidence of gliomas.
Despite these findings, the review’s conclusions were classified as of low-to-moderate certainty. Ken Karipidis, PhD, assistant director of the Australian Radiation Protection and Nuclear Safety Agency’s Health Impact Assessment, explained this was due to the observational nature of the studies, where exposure is not as controlled as in experimental research.
Wael Harb, MD, a hematologist and oncologist not involved in the review, concurred with the findings, stating that the research consistently indicated no significant association between RF-EMF exposure and brain cancer. However, he also emphasized the inherent uncertainty in science and the need for continued research.
Karipidis echoed this need for ongoing research, given the rapid technological advancements and evolving usage of radio waves and different frequencies. This call for further study aligns with the IARC’s “possibly carcinogenic” rating of mobile phones, a classification assigned when it’s impossible to definitively rule out such a link.
The review’s findings are consistent with a recent IARC article, which found that heavy mobile phone users did not have a higher risk of developing brain tumors than light users. Harb noted that while some older studies suggested a potential risk, they were often criticized for methodological issues, and more recent, higher-quality meta-analyses have largely debunked these claims.
The review also considered RF-EMF exposure from workplace equipment, such as MRI machines, heating systems, microwaves, and telecommunication transmitters, which can sometimes result in higher exposure levels. However, both Harb and the WHO review agreed that current research has not demonstrated a significantly different health impact or increased risk of brain cancer or other neoplasms associated with occupational RF-EMF exposure.
In summary, while this WHO review offers reassurance on the safety of mobile phone use, it also underscores the importance of continued research, monitoring, and minimization of RF-EMF exposure.