Radiofrequency radiation from cell phones and cordless phones can cause gliomas | 手机和无线电话的射频辐射能够导致胶质瘤

Radiofrequency (RF) radiation from cell phones and wireless phones can cause glioma

Michael Carlberg and Lennart Hardell at Örebro University, Sweden in 2017 released a report saying that radiofrequency (RF) radiation from cell phones and wireless phones should be classified as a human carcinogen causing glioma. Use of cell phones is extremely common. In many countries, wireless communication has replaced the traditional landline based communication. However, this report reveals that exposure to radiofrequency (RF) radiation from cell phones and wireless phones can double the risk of glioma – a malignant brain tumor.

The following is the abstract of the report.

Objective. Bradford Hill’s viewpoints from 1965 on association or causation were used on glioma risk and use of mobile or cordless phones. Methods. All nine viewpoints were evaluated based on epidemiology and laboratory studies. Results. Strength: meta-analysis of case-control studies gave odds ratio (OR) = 1.90, 95% confidence interval (CI) = 1.31–2.76 with highest cumulative exposure. Consistency: the risk increased with latency, meta-analysis gave in the 10+ years’ latency group OR = 1.62, 95% CI = 1.20–2.19. Specificity: increased risk for glioma was in the temporal lobe. Using meningioma cases as comparison group still increased the risk. Temporality: highest risk was in the 20+ years’ latency group, OR = 2.01, 95% CI =1.41–2.88, for wireless phones. Biological gradient: cumulative use of wireless phones increased the risk. Plausibility: animal studies showed an increased incidence of glioma and malignant schwannoma in rats exposed to radiofrequency (RF) radiation. There is increased production of reactive oxygen species (ROS) from RF radiation. Coherence: there is a change in the natural history of glioma and increasing incidence. Experiment: antioxidants reduced ROS production from RF radiation. Analogy: there is an increased risk in subjects exposed to extremely low-frequency electromagnetic fields. Conclusion. RF radiation should be regarded as a human carcinogen causing glioma.