A consortium of leading scientists has issued a damning report claiming that recent World Health Organization (WHO) reviews on the safety of cellphone radiation are critically flawed and provide no credible assurance that the technology is safe.
The International Commission on the Biological Effects of Electromagnetic Fields (ICBE-EMF) alleges that methodological weaknesses and potential industry bias have compromised the WHO’s assessment, potentially misleading the public and regulators about the true risks posed by the wireless devices that have become ubiquitous in modern life.
The controversy centers on a series of twelve systematic reviews commissioned by the WHO. These reviews are intended to form the bedrock of a forthcoming WHO Environmental Health Criteria Monograph, a document that governments worldwide will use to set safety standards and regulatory policies for radiofrequency (RF) radiation. This type of non-ionizing radiation is emitted by cellphones, Wi-Fi routers, cell towers and other wireless infrastructure. Unlike the powerful ionizing radiation from X-rays or nuclear materials, which can directly damage DNA, RF radiation was long thought to be harmless at low levels, capable only of heating tissue at very high exposures. The ICBE-EMF report, published in the journal Environmental Health, contends that this outdated assumption is at the heart of the problem.
The ICBE-EMF’s central critique involves the methodology used in eleven of the twelve WHO reviews. The scientists argue that the authors relied heavily on a process called meta-analysis, which involves mathematically combining the results of many different studies to produce a single, overarching conclusion. While powerful when used correctly, the ICBE-EMF found that the WHO reviews applied this technique inappropriately, lumping together studies with vastly different exposure conditions and quality levels. This approach, they say, can obscure important findings and dilute evidence of harm.
Leading experts from organizations like the Cochrane Collaboration, a globally respected arbiter of health research quality, generally warn against using meta-analyses when the included studies are too few or too dissimilar. In such cases, a narrative summary is preferred. The ICBE-EMF points out that only one of the twelve WHO reviews followed this best-practice advice. Compounding these methodological concerns are questions of bias. The ICBE-EMF published a supplemental document detailing what it describes as the significant ties between many of the WHO review authors and the wireless industry, as well as their affiliation with the International Commission on Non-Ionizing Radiation Protection (ICNIRP), a body whose safety limits have been adopted globally.