Authors : Sandeep Kumar; Priyanka Devi

Volume/Issue : Volume 11 - 2026, Issue 1 - January

Google Scholar : https://tinyurl.com/mv6jmzyj

Scribd : https://tinyurl.com/5xknrf3d

DOI : https://doi.org/10.38124/ijisrt/26jan1393

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Abstract : The deployment of fifth-generation (5G) wireless communication systems has led to the increased use of millimeter-wave (mmWave) frequencies, rising scientific and public interest regarding potential health implications of human exposure to non-ionizing electromagnetic radiation (EMR). In this paper, the Specific Absorption Rate (SAR) distribution within the human brain is numerically assessed under exposure to 5G mmWave radiation in the 24–40 GHz 5G band. A high-resolution, anatomically realistic human head model comprising multilayer tissues—including skin, skull, cerebrospinal fluid, gray matter, and white matter—is employed for mathematical calculations. To evaluate SAR inside human brain (scalp) due to non ionizing electromagnetic radiation (EMR) mathematical modeling is used. the Localized and spatially averaged SAR values are evaluated for realistic near-field exposure scenarios representative of handheld 5G devices. The results indicate that maximum SAR occurs predominantly tissues, with rapid attenuation toward deeper brain regions due to the limited penetration depth of mmWave radiation. The Brain tissue maximum SAR values are found to be significantly lower than those values reported for mm wave frequencies of 5 G bands and remain well below the limits prescribed by international safety guidelines which are given by ICNIRP, NCRP, WHO, etc. However, localized SAR enhancement is observed near tissue interfaces, emphasizing the need for detailed anatomical modeling. The findings contribute to a refined understanding of mmWave energy deposition in the human brain and provide scientific support for exposure compliance assessment and safety evaluation of emerging 5G technologies.

Keywords : Specific Absorption Rate, Electromagnetic Radiation (EMR) 5G Millimeter-Wave, Human Brain, Non-Ionizing Radiation (NIR).

References :

1. International Commission on Non-Ionizing Radiation Protection (ICNIRP). (2020). Guidelines for limiting exposure to electromagnetic fields (100 kHz to 300 GHz). Health Physics, 118(5), 483-524.
2. World Health Organization (WHO). (2020). Electromagnetic fields and public health: Mobile phones. Available at: www.who.int
3. International Agency for Research on Cancer (IARC). (2011). IARC classifies radiofrequency electromagnetic fields as possibly carcinogenic to humans (Press Release No. 208). Lyon, France.
4. Agarwal, A., Deepinder. F., Sharma, R. K., Ranga, G., & Li, J. (2009). Effect of cell phone usage on semen analysis in men attending infertility clinic: An observational study. Fertility and Sterility, 89(1), 124-128.
5. Hutter, H. P., Moshammer, H., Wallner, P., & Kundi, M. (2006). Subjective symptoms, sleeping problems, and cognitive performance in subjects living near mobile phone base stations. Occupational and Environmental Medicine, 63(5), 307–313.
6. Interphone Study Group. (2010). Brain tumor risk in relation to mobile telephone use: Results of the INTERPHONE international case-control study. International Journal of Epidemiology, 39(3), 675–694.
7. Reiter, R. J., Tan, D. X., & Korkmaz, A. (2001). Melatonin and EMF-induced disruption of the circadian system: Possible mechanisms of cancer risk. Endocrine, 18(2), 159-164.
8. Aydin, D., Feychting, M., Schüz, J., & Röösli, M. (2012). Mobile phone use and brain tumors in children and adolescents: A multicenter case-control study. Journal of the National Cancer Institute, 103(16), 1264-1276.
9. IEEE Standards Association. (2015). Standard for Safety Levels with Respect to Human Exposure to Radiofrequency Electromagnetic Fields, 3 kHz to 300 GHz (IEEE Std C95.1-2015).
10. Danish Cohort Study. (2011). Cell phone use and cancer risk: Update of a nationwide cohort study in Denmark. British Medical Journal, 343, d6387.
11. Aydin, M., Karaöz, E., & Özdemir, F. (2019). Effects of electromagnetic radiation emitted by Wi-Fi devices on male reproductive function: A review of current evidence. Reproductive Biology, 19(4), 241-247.
12. Belyaev, I. Y. (2015). Biological effects of low-level microwave radiation on human beings.
13. BioInitiative Report (2020). A rationale for biologically-based exposure standards.
14. Durney, C. H., et al. (1986). Radiofrequency Radiation Dosimetry Handbook.
    This handbook provides detailed data on RF energy absorption in biological tissues and its thermal implications.
15. Foster, K. R., & Glaser, R. (2007). Thermal and non thermal health effects of low-intensity non ionizing radiation: an international perspective. Environmental Health Perspectives.
16. Adey, W. R. (1993). Biological Effects of Electromagnetic Fields. Journal of Cellular Biochemistry.
    This work discusses how low-level electromagnetic fields influence cell signaling and gene expression.
17. Kumar, S., & Yadav, S. (2021). Electromagnetic radiation exposure and its impact on human health. Environmental Research.
18. Moulder, J. E., & Foster, K. R. (1995). Exposure of the general population to radiofrequency fields from wireless telecommunication base stations: Review of the literature. Radiation Protection Dosimetry, 83(1-2), 123–132.
19. World Health Organization (WHO). (1977). Environmental Health Criteria 16: Radiofrequency and Microwaves: Part I—Non-ionizing radiations (ISBN 92-4-154066-0). Geneva: WHO.
20. World Health Organization (WHO). (1978). Environmental Health Criteria 16: Radiofrequency and Microwaves: Part II—Biological effects and health hazards of microwave radiation (ISBN 92-4-154066-0). Geneva: WHO.
21. McIntosh, R. L., Anderson, V., & McKenzie, R. J. (2005). A numerical evaluation of SAR distribution and temperature increase in the human eye during exposure to 900, 1800 and 2450 MHz radiofrequency radiation. Physics in Medicine and Biology, 50(19), 4751–4765. https://doi.org/10.1088/0031-9155/50/19/017
22. Polk, C. (1996). Human exposure to radio frequency fields. In C. Polk & E. Postow (Eds.), Handbook of Biological Effects of Electromagnetic Fields (2nd ed., pp. 169–214). Boca Raton, FL: CRC Press.
23. Bhattacharya, M., & Shafiq, M. (2016). Mobile phone radiation and its impact on human health: A review. International Journal of Scientific and Research Publications, 6(5), 320–331. ISSN 2250-3153.