Such results were obtained by scientists from Oxford University (UK) and the International Agency for Research on Cancer (IARC), whose article published в Journal of the National Cancer Institute.
Since a person holds a mobile phone near his head when talking on a mobile phone, the radio waves emitted by the device penetrate the brain for several centimeters, and the temporal and parietal lobes of the brain are most affected in this case. This circumstance raises concerns that mobile phone users may be at increased risk cancer brain. In recent years, a surge in this concern is associated with the spread of 5G networks. However, studies show conflicting results in this regard.
To clarify this issue, the authors of the new study analyzed data on more than 776,000 women born in the UK between 1935 and 1950. In 2001, these women were interviewed regarding their use of mobile phones. The survey was then repeated in 2011. Over 14 years of observation, more than 3,200 cases of brain cancer were registered among the participants.
An analysis of the information collected showed that those who regularly used a mobile phone and those who had never used this device had approximately the same level of risk of developing a malignant brain tumor.
And this also applies to cancer affecting the temporal and parietal lobes.
No significant difference was found in the risk of developing various specific types of brain cancer: glioma, meningioma, acoustic neuroma, pituitary cancer and eye cancer. However, the likelihood of developing any of these types of cancer did not increase for those who spoke on the phone every day, nor for those who used it for 20 minutes a week, nor for those who regularly used the device for more than a decade.
In addition, mobile phone users found the incidence of tumors in the right and left hemispheres of the brain was the same, despite the fact that people usually hold the phone to the right rather than the left ear more often.
All this led the researchers to conclude that the use of mobile phones under normal conditions does not increase the risk of brain cancer. At the same time, the scientists note, it remains unclear whether such a conclusion is true for those people who use the phone much more than typical participants in the study did. Among them, only 18% talked on the phone for more than half an hour a week.
Be that as it may, the authors of the study recommend that those who are used to talking a lot on the phone use a hands-free headset more often to reduce the level of radiation exposure to the brain.
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