(Contributed author: Xiehe Awei)
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According to the latest data from the National Cancer Center, the annual incidence of brain tumors is about 1.9-5.4/ 100,000, accounting for 1%-3% of all tumors in the body, and the most common in people aged 20-50. In recent years, the incidence of brain tumors has been on the rise, ranking 10th in systemic tumors!
A 2018 study analyzed a total of 79,241 cases over 21 years After malignant brain tumor cases, it was found that the incidence was increasing in all age groups. Cases in the UK rose from 983 in 1995 to 2,531 in 2015, and scientists say an increase in the incidence of brain tumors, possibly due to the use of wireless mobile phones, has contributed to the development of glioblastoma. In order to achieve wireless communication, mobile phones need to emit radio frequency waves. Because mobile phones are close to the head during use, the radio frequency waves they emit can penetrate several centimeters of skull and enter the brain. The temporal and parietal lobes are most exposed to radio frequency waves. Radio frequency waves can have both thermal and non-thermal effects on biological tissue, leading some to worry that electromagnetic radiation from cell phones may increase the risk of brain tumors. The International Agency for Research on Cancer also classifies RF waves as “probably carcinogenic”
On March 29, 2022, researchers from the University of Oxford, UK, and the International Agency for Research on Cancer, published a research paper in the Journal of the National Cancer Institute, showing that mobile phone use does not increase the risk of brain tumors. The research team used data from the still ongoing UK Million Women Study (which recruited a quarter of all UK women born between 1935 and 1950), in 2001 about 776,000 participants Participants completed questionnaires about their mobile phone use, about half of which were re-surveyed in 2011 and linked to their NHS records, and participants were followed up for an average of 14 years. By 2011, about 75% of women aged 60-64 used a mobile phone, compared with just under 50% of women aged 75-79.
During 14 years of follow-up, 3268 (0.42%) suffered from brain tumors. There was no significant difference in the risk of developing brain tumors between people who had never used a cell phone and those who did. This included tumors in the temporal and parietal regions of the brain, the areas of the brain most exposed to radio waves from cell phones. Data from this large-scale study further suggests that cell phone use does not increase the risk of brain tumors.
above The results of the two studies are diametrically opposite. The following study selected more samples to participate in the statistics, which has a relatively high influence. Regardless of whether the use of mobile phones increases the risk of brain tumors, appropriately reducing the time spent on mobile phones is still very important for health!