The is s long-going debate whether cellphones may contribute to the development of brain tumors in those who use them for prolonged periods, but scientific evidence is so far inconclusive on this matter. The reason for the worries is that cellphones emit RF energy that contains both electric and magnetic energy, and exposure to it may be unhealthy for a human being. While any radio equipment does the same thing, and there are industry standards that regulate explosion to RF energy, cellphones are different because people keep them so close to themselves and use them for many hours on a regular basis. In 2012, the Supreme Court of Italy ruling stated that a man’s cellphone was the cause of his tumor – and, more importantly, even the World Health Organization issued a warning that “cell phone usage may cause the development of glioma, a type of tumor that starts in the brain or spine” (Loki, 2018, p. 603). Yet one should also remember that cellphones have been around since the 1980s and were already quite popular by the 1990s. Humanity now has three decades worth of experience in using cellphones, and if their effects on brain tumors had been pronounced, it would have been more noticeable. As of now, there is lingering suspicion about the causal connection between cellphones and cancer, but firm scientific evidence on the subject remains elusive.
Reference
Loki. R. (2018). Do cellphones cause brain cancer? In R. Johnson-Sheenan & C. Paine, Writing today (4th ed.) (pp. 600-607).