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Die Wissenschaft der drahtlosen Strahlung

Hochfrequenzwellen werden seit mehr als hundert Jahren verwendet, um Signale von Sendemasten zu entfernten Empfängern zu übertragen. Diese Technologie hat Millionen von Menschen auf der ganzen Welt informiert und unterhalten. Die heute von der Mobilfunkindustrie angebotene Technologie bringt leistungsstarke Sender und Empfänger jedoch viel näher an Benutzer jeden Alters als je zuvor.

Diese Zwei-Wege-Kommunikation und die zu ihrer Unterstützung erforderliche erhöhte Strahlung geben Anlass zur Besorgnis. Tatsächlich warnen Hersteller von drahtlosen Geräten die Verbraucher, ihre Telefone, Tablets, Babyphone und andere drahtlose Geräte von ihrem Körper fernzuhalten.

Eine kürzlich an der Yale University durchgeführte Studie (Aldad et al. 2012) ergab, dass schwangere Labormäuse, die normaler Handystrahlung ausgesetzt waren, Nachkommen hervorbrachten, die hyperaktiver waren und ein schlechteres Gedächtnis hatten als eine Kontrollgruppe, die nicht exponiert war. Dr. Hugh Taylor, Vorsitzender der Abteilung für Geburtshilfe, Gynäkologie und Reproduktionswissenschaften an der Yale University School of Medicine, und sein Forscherteam kamen zu dem Schluss, dass die Mobilfunkstrahlung Neuronen im präfrontalen Kortex des Gehirns geschädigt hatte.

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Die Arbeit der Yale-Forscher folgte einer stetigen Weiterentwicklung wissenschaftlicher Studien, die die Auswirkungen der drahtlosen Strahlung auf Gesundheit und Verhalten nachwiesen. Zwanzig

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Im Laufe des nächsten Jahrzehnts wurden zahlreiche Studien zur Sicherheit von HF-Strahlung mit unterschiedlichen Ergebnissen durchgeführt, und die Relevanz von Tierversuchen für den Menschen blieb umstritten. Von besonderer Bedeutung war die Arbeit von Forschern der University of Kentucky, die zeigen konnten, wie die Exposition gegenüber drahtloser Strahlung Gehirnzellen schädigen oder sogar zerstören kann (Zhao, et al. 2007). Forscher in Samsun, Türkei, veröffentlichten Ergebnisse, dass Ratten, die pränatal der Strahlung von Mobiltelefonen ausgesetzt waren, eine Lernbehinderung entwickelten und auch Schäden an den Teilen des Gehirns zeigten, die am Gedächtnis und Lernen beteiligt sind (Inkinci, et al. 2013).

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In einer weiteren Studie hatten Ratten, die pränatal der drahtlosen Strahlung ausgesetzt waren, auch Rückenmarksschäden (Odaci, et al. 2013). In Bezug auf die menschlichen Auswirkungen von drahtloser Strahlung untersuchten UCLA-Forscher (Divan, et al. 2008) 13.000 Mütter und Kinder und fanden heraus, dass die pränatale Exposition gegenüber Mobiltelefonen mit einem höheren Risiko für Verhaltensprobleme und Hyperaktivität bei Kindern verbunden war. Wissenschaftler forschen weiterhin über die Auswirkungen der drahtlosen Strahlenbelastung auf den Menschen.

In yet another study, rats prenatally exposed to wireless radiation also had damaged spinal cords (Odaci, et al 2013). Regarding human impacts of wireless radiation, UCLA researchers (Divan, et al 2008) studied 13,000 mothers and children and found that prenatal exposure to cell phones was associated with a higher risk for behavioral problems and hyperactivity in children. Scientists continue to conduct research on the human impact of wireless radiation exposure.

Consumer demand for connectivity everywhere has resulted in the installation of many more powerful local wireless transmitters and receivers, and now hundreds of thousands of rooftop, pole-mounted and tower transmitters (antennas) are placed in close proximity to private homes, apartments, schools, office buildings, retail and recreation areas. “Free WiFi” is commonly advertised to attract customers at bars, restaurants, hotels and coffee shops. Wireless routers in public spaces are very powerful because they are intended to power many laptops or tablets simultaneously.

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This ubiquitous and ever-growing wireless world that we live in means that wireless radiation is all around us. But you can still make some personal choices that can reduce your exposure. As mentioned previously, keeping a safe distance from transmitters or antennas and keeping your personal wireless devices away from your body is relatively easy to do. The amount of time you spend using wireless devices is also important. Remember that exposure adds up over time.

While we wait for the scientific process to provide us with a deeper understanding of this issue, and for government agencies to adopt appropriate exposure thresholds, a precautionary approach to exposures, especially during pregnancy, seems warranted.

Ausgewählte Ressourcen:

Effects on Fetuses

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  1. Mobile Phone Use During Pregnancy: Which Association With Fetal Growth? Boileau, N., et al. Journal of Gynecology Obstetrics and Human Reproduction 49(8):101852. (2020). 

  2. Mother’s Exposure to Electromagnetic Fields Before and During Pregnancy is Associated with Risk of Speech Problems in Offspring. Zarei, S., et al. Journal of Biomedical Physics and Engineering 9(1):61-68. (2019). 

  3. Prenatal Exposure to Extremely Low Frequency Magnetic Field and Its Impact on Fetal Growth. Ren, Y., et al. Environmental Health 18(1):6. (2019).

  4. Associations of Maternal Cell Phone Use During Pregnancy, Pregnancy Duration And Fetal Growth In Four Birth Cohorts. Tsarna, E., et al. American Journal of Epidemiology 188(7):1270-1280. (2019).

  5. Effect of radiofrequency radiation on reproductive health. Singh, R., et al. Indian Journal of Medical Research 148(Suppl 1): S92–S99. (2018). 

  6. The Effects of Radiofrequency Radiation on Mice Fetus Weight, Length and Tissues. Alimohammadi, I., et al. Data in Brief 19:2189-2194. (2018). 

  7. Effects of Prenatal Exposure to WiFi Signal (2.45 GHz) on Postnatal Development and Behavior in Rat: Influence of Maternal Restraint. Othman, H., et al. Behavioral Brain Research 326:291-301. (2017). 

  8. Exposure to Magnetic Field Non-Ionizing Radiation and the Risk of Miscarriage: A prospective Cohort Study. Li, D., et al. Scientific Reports 7(17541). (2017). 

  9. Postnatal Development and Behavior Effects of In-Utero Exposure of Rats to Radiofrequency Waves Emitted From Conventional WiFi Devices. Othman, H., et al. Environmental Toxicology and Pharmacology 52:239-247 (2017). 

  10. Lasting Hepatotoxic Effects of Prenatal Mobile Phone Exposure. Yilmaz, A., et al. The Journal of Maternal-Fetal & Neonatal Medicine 30(11):1355-1359 (2017). 

  11. Multiple Assessment Methods of Prenatal Exposure to Radio Frequency Radiation from Telecommunication in the Mothers and Children’s Environmental Health (MOCEH) Study. Choi, KH., et al. International Journal of Occupational Medicine and Environmental Health 29(6):959-972 (2016).

  12. A Review on Electromagnetic Fields (EMFs) and the Reproductive System. Asghari, A., et al. Electronic Physician Journal 8(7):2655-2662. (2016). 

  13. Genotoxicity Induced by Foetal and Infant Exposure to Magnetic Fields and Modulation of Ionising Radiation Effects. Udroiu, I., et al. PLoS One10(11):E0142259. (2015).

  14. Oxidative Stress of Brain and Liver is Increased by Wi-Fi (2.45 GHz) Exposure of Rats During Pregnancy and the Development of Newborns. Çelik, Ö., et al. Journal of Chemical Neuroanatomy 75(Pt B):134-139. (2015). 

  15. Neurodegenerative Changes and Apoptosis Induced by Intrauterine and Extrauterine Exposure of Radiofrequency Radiation. Güler, G., et al. Journal of Chemical Neuroanatomy 75(Pt B):128-133. (2015). 

  16. Maternal Exposure to a Continuous 900-MHz Electromagnetic Field Provokes Neuronal Loss and Pathological Changes in Cerebellum of 32-Day-Old Female Rat Offspring. Odacı, E., et al. Journal of Chemical Neuroanatomy 75(Pt B):105-110. (2015). 

  17. Different Periods of Intrauterine Exposure to Electromagnetic Field: Influence on Female Rats’ Fertility, Prenatal and Postnatal Development. Alchalabi, A., et al. Asian Pacific Journal of Reproduction 5(1):14-23. (2015). 

  18. Use of Mobile Phone During Pregnancy and the Risk of Spontaneous Abortion. Mahmoudabadi, F., et al. Journal of Environmental Health Science and Engineering 13:34. (2015). 

  19. Effects of Prenatal 900 MHz Electromagnetic Field Exposures on the Histology of Rat Kidney. Ulubay, M., et al. International Journal of Radiation Biology 91(1):35-41. (2015). 

  20. The Effect of Exposure of Rats During Prenatal Period to Radiation Spreading from Mobile Phones on Renal Development. Bedir, R., et al. Renal Failure 37(2):305-9. (2015). 

  21. Dosimetric Study of Fetal Exposure to Uniform Magnetic Fields at 50 Hz. Liorni, I., et al. Bioelectromagnetics 35(8):580-97 (2014).

  22. Influence of Pregnancy Stage and Fetus Position on the Whole-Body and Local Exposure of the Fetus to RF-EMF. Varsier, N. et al. Physics in Medicine and Biology 59(17):4913-26. (2014). 

  23. Autism-Relevant Social Abnormalities in Mice Exposed Perinatally to Extremely Low Frequency Electromagnetic Fields. Alsaeed, I., et al. International Journal of Developmental Neuroscience 37:58-64. (2014). 

  24. Pyramidal Cell Loss in the Cornu Ammonis of 32-day-old Female Rats Following Exposure to a 900 Megahertz Electromagnetic Field During Prenatal Days 13–21. Bas, O., et al. NeuroQuantology 11(4):591-599. (2013). 

  25. The Effects of 900 Megahertz Electromagnetic Field Applied in the Prenatal Period on Spinal Cord Morphology and Motor Behavior in Female Rat Pups. Odaci, E., et al. NeuroQuantology 11(4):573-581. (2013). 

  26. The Effects of Prenatal Exposure to a 900 Megahertz Electromagnetic Field on Hippocampus Morphology and Learning Behavior in Rat Pups. Ä°kinci, A., et al. NeuroQuantology 11(4):582-590. (2013)

  27. Fetal Radiofrequency Radiation Exposure From 800-1900 MHz-Rated Cellular Telephones Affects Neurodevelopment and Behavior in Mice. Aldad, T., et al. Science Reports 2:312. (2012).

  28. Cranial and Postcranial Skeletal Variations Induced in Mouse Embryos by Mobile Phone Radiation. Fragopoulou, AF., et al. Pathophysiology 17(3):169-77. (2010). 

  29. Maternal Occupational Exposure to Extremely Low Frequency Magnetic Fields and the Risk of Brain Cancer in the Offspring. Li, P, et al. Cancer Causes & Control 20(6):945-55. (2009). 

  30. Reproductive and Developmental Effects of EMF in Vertebrate Animal Models. Pourlis, A.F. Pathophysiology 16(2-3):179-89. (2009). 

  31. Prenatal and Postnatal Exposure to Cell Phone Use and Behavioral Problems in Children. Divan, HA., et al. Epidemiology 19(4):523-29 (2008). 

  32. Effects of Prenatal Exposure to a 900 MHz Electromagnetic Field on the Dentate Gyrus of Rats: A Stereological and Histopathological Study. Odaci, E., et al. Brain Research 1238:224–229. (2008).

  33. Ultra High Frequency-Electromagnetic Field Irradiation During Pregnancy Leads to an Increase in Erythrocytes Micronuclei Incidence in Rat Offspring. Ferreira, A., et al. Life Sciences 80(1):43-50. (2006). 

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Male Fertility ​

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  1. Long-Term Exposure to 4G Smartphone Radiofrequency Electromagnetic Radiation Diminished Male Reproductive Portential by Directly Disrupting Spck3-MMP2-BTB Axis in the Testes of Adult Rats. Yu, G., et al. Science of The Total Environment 698(133860). (2020). 

  2. Radiations and Male Fertility. Kesari, K., et al. Reproductive Biology and Endocrinology 16(118). (2018). 

  3. The Effect of 2.45 GHz Non-Ionizing Radiation on the Structure and Ultrastructure of The Testis in Juvenile Rats. Simaiova, V., et al. Histology and Histopathology 34(4):18049. (2018). 

  4. Modulatory Effect of 900 MHz Radiation on Biochemical and Reproductive Parameters in Rats. Narayanan, SN., et al. Bratislava Medical Journal 119(9):581-587. (2018). 

  5. Aloe Arborescens Juice Prevents EMF-Induced Oxidative Stress and Thus Protects from Pathophysiology in the Male Reproductive System In Vitro. Solek, P., et al. Environmental Research 166:141-149. (2018). 

  6. Radiofrequency Radiation (900 MHz)-Induced DNA Damage and Cell Cycle Arrest in Testicular Germ Cells in Swiss Albino Mice. Pandey, N., et al. Toxicology and Industrial Health 33(4) 373-384. (2017). 

  7. The Effects of Radiofrequency Electromagnetic Radiation on Sperm Function. Houston, BJ., et al. Reproduction 152(6):R263-R276. (2016). 

  8. Male Fertility and its Association with Occupational and Mobile Phone Tower Hazards: An Analytical Study. Al-Quzwini, O., et al. Middle East Fertility Society Journal 21(4):236-240. (2016). 

  9. Sperm DNA Damage – The Effect of Stress and Everyday Life Factors. Radwan, M., et al. International Journal of Impotence Research 28(4):148-154. (2016).

  10. Electromagnetic Radiation at 900 MHz Induces Sperm Apoptosis through bcl-2, bax and caspase-3 Signaling Pathways in Rats. Liu, Q., et al. Journal of Reproductive Health 12:65. (2015). 

  11. Habits of Cell Phone usage and Sperm Quality - Does It Warrant Attention? Zilberlicht, A., et al. Reproductive BioMedicine Online 31(3):421-426. (2015). 

  12. In Vitro Effect of Cell Phone Radiation on Motility, DNA Fragmentation and Clusterin Gene Expression in Human Sperm. Zalata, A., et al. International Journal of Fertility and Sterility 9(1):129-136. (2015). 

  13. Extremely Low frequency Magnetic Fields Induce Spermatogenic Germ Cell Apoptosis: Possible Mechanism. Lee, S., et al. BioMed Research International 2014(567183). (2014). 

  14. Effect of mobile telephones on sperm quality: A systematic review and meta-analysis. Adams, J., et al. Environment International 70:106-112. (2014). 

  15. Effect of Electromagnetic Field Exposure on the Reproductive System. Gye, M., et al. Journal of Clinical and Experimental Reproductive Medicine 39(1):1-19. (2012). 

  16. Effects of the Exposure of Mobile Phones on Male Reproduction: A Review of the Literature. La Vignera, S., et al. Journal of Andrology 33(3):350-356. (2012).

  17. Use of Laptop Computers Connected to Internet Through Wi-Fi Decreases Human Sperm Motility and Increases Sperm DNA Fragmentation. Avendano, C., et al. Fertility and Sterility 97(1):39-45. (2012). 

  18. Exposure to Magnetic fields and the Risk of Poor Sperm Quality. Li, D.K, et al. Journal of Reproductive Toxicology 29(1):86-92. (2010). 

  19. Mobile Phone Radiation Induces Reactive Oxygen Species Production and DNA Damage in Human Spermatozoa In Vitro. De Luliis, G., et al. PLoS ONE 4(7). (2009).    

  20. Radio Frequency Electromagnetic Radiation (Rf-EMR) from GSM Mobile Phones Induces Oxidative Stress and Reduces Sperm Motility in Rats. Mailankot, M., et al. Clinics (San Paulo) 64(6):561-5. (2009). 

  21. Cell Phones: Modern Man’s Nemesis? Makker, K., et al. Reproductive BioMedicine Online 18(1):148-157. (2009). 

  22. Indicative SAR Levels Due to an Active Mobile Phone in a Front Trouser Pocket in Proximity to Common Metallic Objects. Whittow, WG., et al. IEEE Xplore 149-152 (2008). 

  23. Effect of Cell Phone Usage on Semen Analysis in Men Attending Infertility Clinic: An Observational Study. Agarwal, A., et al. Fertility and Sterility 89(1):124-128. (2008). 

  24. Cell Phones and Male Infertility: Dissecting the Relationship. Deepinder, F., et al. Reproductive BioMedicine Online 15(3):266-270. (2007). 

  25. Evaluation of the Effect of Using Mobile Phones on Male Fertility. Wdowiak, A., et al. Annals of Agricultural and Medicine 14(1):169-172. (2007).

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