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Rabiei M, Masoumi SJ, Mortazavi SMJ, Nematolahi S, Haghani M. Mobile Cellular Data and Wi-Fi Use Are Not Associated with Adverse Health Effects. J Biomed Phys Eng 2023; 13:497-502. [PMID: 38148957 PMCID: PMC10749419 DOI: 10.31661/jbpe.v0i0.2206-1511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/02/2022] [Indexed: 12/28/2023]
Abstract
Background Smartphone users frequently connect to the Internet via mobile data or Wi-Fi. Over the past two decades, the worldwide percentage of people who connect to the Internet using their mobile phones has increased drastically. Objective This study aimed to evaluate the potential link between mobile cellular data/ and Wi-Fi use and adverse health effects. Material and Methods This cross-sectional study was conducted on 2,796 employees (52% female and 48% male) of Shiraz University of Medical Sciences (SUMS), Shiraz, Iran. The sociodemographic data (e.g., gender, age, nationality, and education level) were collected for all the participants. They were also requested to provide information about their smartphone use including the characteristics of the connection to the Internet using their smartphones (mobile data and Wi-Fi). In addition, the participants' history of diabetes, hypertension, cardiac ischemia, myocardial infarction, renal failure, fatty liver, hepatitis, chronic lung disease, thyroid disease, kidney stone, gall bladder stone, rheumatoid disease, epilepsy, and chronic headache was recorded through face-to-face interviews. Results 94% of people participating in this study reported using mobile/Wi-Fi internet. The mean (±SD) Internet usage per day was 117.85±122.70 minutes including 76±98 minutes of mobile data and 42±81 minutes of Wi-Fi use. Conclusion Our findings showed no link between mobile phone Internet usage and the risk of the above-mentioned health problems. As in 2021, the global average daily time spent on the Internet using mobile phones was 155 minutes, the participants' lower use time could explain the failure to show any detrimental effects. Considering the study limitations, further large-scale studies are warranted.
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Affiliation(s)
- Marziye Rabiei
- Student Research Committee, Department of Medical Physics and Engineering, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Seyed Jalil Masoumi
- Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Science, Shiraz, Iran
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Center for Cohort Study of SUMS Employees' Health, Shiraz University of Medical Science, Shiraz, Iran
| | - Seyed Mohammad Javad Mortazavi
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Medical Physics and Engineering, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Samane Nematolahi
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran
| | - Masoud Haghani
- Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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Levitt BB, Lai HC, Manville AM. Effects of non-ionizing electromagnetic fields on flora and fauna, Part 3. Exposure standards, public policy, laws, and future directions. REVIEWS ON ENVIRONMENTAL HEALTH 2022; 37:531-558. [PMID: 34563106 DOI: 10.1515/reveh-2021-0083] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Due to the continuous rising ambient levels of nonionizing electromagnetic fields (EMFs) used in modern societies-primarily from wireless technologies-that have now become a ubiquitous biologically active environmental pollutant, a new vision on how to regulate such exposures for non-human species at the ecosystem level is needed. Government standards adopted for human exposures are examined for applicability to wildlife. Existing environmental laws, such as the National Environmental Policy Act and the Migratory Bird Treaty Act in the U.S. and others used in Canada and throughout Europe, should be strengthened and enforced. New laws should be written to accommodate the ever-increasing EMF exposures. Radiofrequency radiation exposure standards that have been adopted by worldwide agencies and governments warrant more stringent controls given the new and unusual signaling characteristics used in 5G technology. No such standards take wildlife into consideration. Many species of flora and fauna, because of distinctive physiologies, have been found sensitive to exogenous EMF in ways that surpass human reactivity. Such exposures may now be capable of affecting endogenous bioelectric states in some species. Numerous studies across all frequencies and taxa indicate that low-level EMF exposures have numerous adverse effects, including on orientation, migration, food finding, reproduction, mating, nest and den building, territorial maintenance, defense, vitality, longevity, and survivorship. Cyto- and geno-toxic effects have long been observed. It is time to recognize ambient EMF as a novel form of pollution and develop rules at regulatory agencies that designate air as 'habitat' so EMF can be regulated like other pollutants. Wildlife loss is often unseen and undocumented until tipping points are reached. A robust dialog regarding technology's high-impact role in the nascent field of electroecology needs to commence. Long-term chronic low-level EMF exposure standards should be set accordingly for wildlife, including, but not limited to, the redesign of wireless devices, as well as infrastructure, in order to reduce the rising ambient levels (explored in Part 1). Possible environmental approaches are discussed. This is Part 3 of a three-part series.
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Affiliation(s)
| | - Henry C Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Albert M Manville
- Advanced Academic Programs, Krieger School of Arts and Sciences, Environmental Sciences and Policy, Johns Hopkins University, Baltimore, USA
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Mohammed MOA, Elzaki AA, Babiker BA, Eid OI. Spatial variability of outdoor exposure to radiofrequency radiation from mobile phone base stations, in Khartoum, Sudan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:15026-15039. [PMID: 34622411 DOI: 10.1007/s11356-021-16555-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
The wide-spread exposure to constantly evolving wireless technologies believed to pose a serious health threat. Human beings are persistently exposed to RF radiation from mobile phones and their base stations. The current study aimed at classifying and characterizing the exposure to RF radiation from the mobile phone base stations. Spatial distribution measurements were carried out in Khartoum city during two time periods, first in 2012 (pilot survey) and again during Sept. 2019-Jan. 2020, to cover a total of 282 antennas operating with GSM900, GSM1800, and UMTS2100. The tested antennas belong to three mobile communication companies namely Sudani, Zain, and MTN companies, that randomly coded into company A, company B, and company C for security purposes. Measurements were performed using frequency-selective RF analyzer at fixed distances from the antennas/towers. Data were subjected to advanced repeated measures ANOVA, linear discriminant analysis (LDA), and spatial interpolation with ArcGIS. The averages of GSM900, GSM1800, and UMTS measurements were 0.01933 W/m2, 0.0067 W/m2, and 0.0046 W/m2. The high levels of power densities for each single antenna were recorded at 90 m, 110 m, 130 m, and at 150 m distances, for the majority (70%) of the measured antennas and the peak/highest values reported mainly at 110 m distance. Conversely, the discriminant loadings as part of LDA, suggested that, much of variance among measurements is attributed to measurements at 150 m, 170 m, and 190 m distances, while visual illustration of group centroids implied that, the RF signals of the different companies were measured separately which support accuracy of frequency-selective measurements. The LDA has confirmed the ANOVA results that, the overall difference between the three companies was statistically significant for UMTS, and GSM900 measurements but not significant for GSM1800 measurements. Kriging interpolation using ArcGIS provided a strong evidence of great spatial distribution of exposure across the study area, with market places and typical urban residential quarters showing highest levels of RF. Few extreme values exceeding ICNIRP limits are reported but excluded from the calculations because of an issue of normality of data that is considered a prerequisite for parametric data analysis. Existence of extreme levels of RF indicates a need for further investigation and some antennas of Company B are mounted on towers belongs to Company C, implying multi exposure. Unexpected pattern of RF levels continued to increase up to 190 m distance and possibly beyond 190 m is reported for UMTS measurements of Company C.
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Affiliation(s)
- Mohammed O A Mohammed
- Faculty of Public and Environmental Health, Department of Environmental Health & Environmental Studies, Khartoum University, Khartoum, Sudan.
- Faculty of Health Sciences, Department of Public Health, Saudi Electronic University, Riyadh, KSA, Saudi Arabia.
| | - Ahmed A Elzaki
- Faculty of Public and Environmental Health, Department of Environmental Health & Environmental Studies, Khartoum University, Khartoum, Sudan
| | - Babiker A Babiker
- Faculty of Public and Environmental Health, Department of Environmental Health & Environmental Studies, Khartoum University, Khartoum, Sudan
| | - Omer I Eid
- Faculty of Sciences, Department of Physics, Khartoum University, Khartoum, Sudan
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Unsal M, Fadiloglu E, Celik B, Kilic F, Tapisiz OL. Effect of Nonionizing Radiation on Progesterone Treatment in Endometrial Hyperplasia: An Experimental Rat Study. Gynecol Obstet Invest 2021; 86:479-485. [PMID: 34749368 DOI: 10.1159/000519195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 08/13/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The aim of the study was to evaluate the negative effect of nonionizing radiation on the treatment of endometrial hyperplasia (EH) with oral progesterone. DESIGN Forty oophorectomized Wistar Albino female rats were included in this experimental rat study. MATERIALS AND METHODS The 4 groups were planned as follows: Group A; sham group; Group B; group receiving oral estradiol hemihydrate 4 mg/kg/day; Group C; 4 mg/kg/day oral estradiol hemihydrate followed with 1 mg/day medroxy progesterone acetate (MPA) and Group D; 4 mg/kg/day oral estradiol hemihydrate followed with 1 mg/day MPA with exposure to nonionizing radiation at 1800 mHz/3 h/day. After the experimental model, uterine horns were sampled and the preparations were evaluated for pathological parameters (glandular density, epithelial cell length, and luminal epithelial cell length) via light microscopy. Nonionizing radiation was created by a signal generator and a compatible mobile phone. RESULTS Estrogen was found to increase all parameters related to EH (p < 0.05). Progesterone treatment was found to decrease parameters related to EH (Group B vs. C; luminal epithelial cell length, glandular density, and epithelial length; 11.2 vs. 13.2 μm p = 0.007; 32.5 vs. 35.5, p = 0.068; and 219.9 μm vs. 285 µm, p < 0.001, respectively). Final analyses revealed reduced effectiveness of progesterone treatment in the rats exposed to nonionizing radiation (Group C vs. D); luminal epithelial cell length, glandular density, and epithelial length (11.2 μm vs. 13.5 μm, p = 0.179; 32.5 vs. 52, p < 0.001; and 219.9 μm vs. 374.1 μm, p = 0.001, respectively). LIMITATIONS The limitations of our study are that the results of animal experiments may not be appropriate for direct adaptation to humans and the relatively low number of rats included in the study. CONCLUSION Nonionizing radiation reduces the effect of progesterone in patients receiving treatment for EH.
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Affiliation(s)
- Mehmet Unsal
- Department of Gynecology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Faculty of Medicine, University of Health Sciences, Ankara, Turkey
| | - Erdem Fadiloglu
- Department of Gynecology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Faculty of Medicine, University of Health Sciences, Ankara, Turkey
| | - Burcin Celik
- Department of Pathology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Faculty of Medicine, University of Health Sciences, Ankara, Turkey
| | - Fatih Kilic
- Department of Gynecology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Faculty of Medicine, University of Health Sciences, Ankara, Turkey
| | - Omer Lutfi Tapisiz
- Department of Gynecology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Faculty of Medicine, University of Health Sciences, Ankara, Turkey
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5
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Qubty D, Schreiber S, Rubovitch V, Boag A, Pick CG. No Significant Effects of Cellphone Electromagnetic Radiation on Mice Memory or Anxiety: Some Mixed Effects on Traumatic Brain Injured Mice. Neurotrauma Rep 2021; 2:381-390. [PMID: 34723249 PMCID: PMC8550818 DOI: 10.1089/neur.2021.0009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Current literature details an array of contradictory results regarding the effect of radiofrequency electromagnetic radiation (RF-EMR) on health, both in humans and in animal models. The present study was designed to ascertain the conflicting data published regarding the possible impact of cellular exposure (radiation) on male and female mice as far as spatial memory, anxiety, and general well-being is concerned. To increase the likelihood of identifying possible "subtle" effects, we chose to test it in already cognitively impaired (following mild traumatic brain injury; mTBI) mice. Exposure to cellular radiation by itself had no significant impact on anxiety levels or spatial/visual memory in mice. When examining the dual impact of mTBI and cellular radiation on anxiety, no differences were found in the anxiety-like behavior as seen at the elevated plus maze (EPM). When exposed to both mTBI and cellular radiation, our results show improvement of visual memory impairment in both female and male mice, but worsening of the spatial memory of female mice. These results do not allow for a decisive conclusion regarding the possible hazards of cellular radiation on brain function in mice, and the mTBI did not facilitate identification of subtle effects by augmenting them.
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Affiliation(s)
- Doaa Qubty
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shaul Schreiber
- Department of Psychiatry, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Vardit Rubovitch
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Amir Boag
- School of Electrical Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Chaim G Pick
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Psychiatry, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,The Dr. Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Tel Aviv University, Tel Aviv, Israel.,Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv, Israel
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6
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Belpomme D, Carlo GL, Irigaray P, Carpenter DO, Hardell L, Kundi M, Belyaev I, Havas M, Adlkofer F, Heuser G, Miller AB, Caccamo D, De Luca C, von Klitzing L, Pall ML, Bandara P, Stein Y, Sage C, Soffritti M, Davis D, Moskowitz JM, Mortazavi SMJ, Herbert MR, Moshammer H, Ledoigt G, Turner R, Tweedale A, Muñoz-Calero P, Udasin I, Koppel T, Burgio E, Vorst AV. The Critical Importance of Molecular Biomarkers and Imaging in the Study of Electrohypersensitivity. A Scientific Consensus International Report. Int J Mol Sci 2021; 22:7321. [PMID: 34298941 PMCID: PMC8304862 DOI: 10.3390/ijms22147321] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/23/2021] [Accepted: 06/26/2021] [Indexed: 02/07/2023] Open
Abstract
Clinical research aiming at objectively identifying and characterizing diseases via clinical observations and biological and radiological findings is a critical initial research step when establishing objective diagnostic criteria and treatments. Failure to first define such diagnostic criteria may lead research on pathogenesis and etiology to serious confounding biases and erroneous medical interpretations. This is particularly the case for electrohypersensitivity (EHS) and more particularly for the so-called "provocation tests", which do not investigate the causal origin of EHS but rather the EHS-associated particular environmental intolerance state with hypersensitivity to man-made electromagnetic fields (EMF). However, because those tests depend on multiple EMF-associated physical and biological parameters and have been conducted in patients without having first defined EHS objectively and/or endpoints adequately, they cannot presently be considered to be valid pathogenesis research methodologies. Consequently, the negative results obtained by these tests do not preclude a role of EMF exposure as a symptomatic trigger in EHS patients. Moreover, there is no proof that EHS symptoms or EHS itself are caused by psychosomatic or nocebo effects. This international consensus report pleads for the acknowledgement of EHS as a distinct neuropathological disorder and for its inclusion in the WHO International Classification of Diseases.
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Affiliation(s)
- Dominique Belpomme
- Association for Research Against Cancer (ARTAC), 57/59 rue de la Convention, 75015 Paris, France;
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
| | - George L. Carlo
- The Science and Public Policy Institute, Washington, DC 20006, USA;
| | - Philippe Irigaray
- Association for Research Against Cancer (ARTAC), 57/59 rue de la Convention, 75015 Paris, France;
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
| | - David O. Carpenter
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
- Institute for Health and the Environment, University at Albany, Albany, NY 12222, USA
- Child Health Research Centre, Faculty of Medicine, The University of Queensland, South Brisbane, QLD 4101, Australia
| | - Lennart Hardell
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
- The Environment and Cancer Research Foundation, SE-702 17 Örebro, Sweden
| | - Michael Kundi
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (H.M.)
| | - Igor Belyaev
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
- Biomedical Research Center, Slovak Academy of Science, 845 05 Bratislava, Slovakia
| | - Magda Havas
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
- Trent School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON K9J 0G2, Canada
| | - Franz Adlkofer
- Verum-Foundation for Behaviour and Environment c/o Regus Center Josephspitalstrasse 15/IV, 80331 München, Germany;
| | - Gunnar Heuser
- Formerly UCLA Medical Center, Department of Medicine, P.O. Box 5066, El Dorado Hills, Los Angeles, CA 95762, USA;
| | - Anthony B. Miller
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5S, Canada;
| | - Daniela Caccamo
- Department of Biomedical Sciences, Dental Sciences and Morpho Functional Imaging, Polyclinic Hospital University, 98122 Messina, Italy;
| | - Chiara De Luca
- Department of Registration & Quality Management, Medical & Regulatory Affairs Manager, MEDENA AG, 8910 Affoltern am Albis, Switzerland;
| | - Lebrecht von Klitzing
- Medical Physicist, Institute of Environmental and Medical Physic, D-36466 Wiesenthal, Germany;
| | - Martin L. Pall
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA;
| | - Priyanka Bandara
- Oceania Radiofrequency Scientific Advisory Association (ORSAA), P.O. Box 152, Scarborough, QLD 4020, Australia;
| | - Yael Stein
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91905, Israel;
- Hadassah Medical Center, Department of Anesthesiology, Critical Care and Pain Medicine, Jerusalem 91905, Israel
| | - Cindy Sage
- Sage Associates, Montecito, Santa Barbara, CA 93108, USA;
| | - Morando Soffritti
- Istituto Ramazzini, via Libia 13/A, 40138 Bologna, Italy;
- Collegium Ramazzini, Castello di Bentivoglio, via Saliceto, 3, 40010 Bentivoglio, Italy
| | - Devra Davis
- Environmental Health Trust, P.O. Box 58, Teton Village, WY 83025, USA;
| | - Joel M. Moskowitz
- School of Public Health, University of California, Berkeley, CA 94720, USA;
| | - S. M. J. Mortazavi
- Medical Physics and Medical Engineering Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz P.O. Box 71348-14336, Iran;
- Ionizing and Non-ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz P.O. Box 71348-14336, Iran
| | - Martha R. Herbert
- A.A. Martinos Centre for Biomedical Imaging, Department of Neurology, MGH, Harvard Medical School, MGH/MIT/Harvard 149 Thirteenth Street, Charlestown, MA 02129, USA;
| | - Hanns Moshammer
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, 1090 Vienna, Austria; (M.K.); (H.M.)
- Department of Hygiene, Karakalpak Medical University, Nukus 230100, Uzbekistan
| | - Gerard Ledoigt
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
| | - Robert Turner
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA;
- Clinical Pediatrics and Neurology, School of Medicine, University of South Carolina, Columbia, SC 29209, USA
| | - Anthony Tweedale
- Rebutting Industry Science with Knowledge (R.I.S.K.) Consultancy, Blv. Edmond Machtens 101/34, B-1080 Brussels, Belgium;
| | - Pilar Muñoz-Calero
- Foundation Alborada, Finca el Olivar, Carretera M-600, Km. 32,400, 28690 Brunete, Spain;
| | - Iris Udasin
- EOHSI Clinical Center, School of Public Health, Rutgers University, Piscataway, NJ 08854, USA;
| | - Tarmo Koppel
- AI Institute, University of South Carolina, Columbia, SC 29208, USA;
| | - Ernesto Burgio
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
| | - André Vander Vorst
- European Cancer and Environment Research Institute (ECERI), 1000 Brussels, Belgium; (D.O.C.); (L.H.); (I.B.); (M.H.); (G.L.); (E.B.); (A.V.V.)
- European Microwave Association, Rue Louis de Geer 6, B-1348 Louvain-la-Neuve, Belgium
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Almášiová V, Holovská K, Andrašková S, Cigánková V, Ševčíková Z, Raček A, Andrejčáková Z, Beňová K, Tóth Š, Tvrdá E, Molnár J, Račeková E. Potential influence of prenatal 2.45 GHz radiofrequency electromagnetic field exposure on Wistar albino rat testis. Histol Histopathol 2021; 36:685-696. [PMID: 33779980 DOI: 10.14670/hh-18-331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An ever-increasing use of wireless devices over the last decades has forced scientists to clarify their impact on living systems. Since prenatal development is highly sensitive to numerous noxious agents, including radiation, we focused on the assessment of potential adverse effects of microwave radiation (MR) on testicular development. Pregnant Wistar albino rats (3 months old, weighing 282±8 g) were exposed to pulsed MR at a frequency of 2.45 GHz, mean power density of 2.8 mW/cm², and a specific absorption rate of 1.82 W/kg for 2 hours/day throughout pregnancy. Male offspring were no longer exposed to MR following birth. Samples of biological material were collected after reaching adulthood (75 days). In utero MR exposure caused degenerative changes in the testicular parenchyma of adult rats. The shape of the seminiferous tubules was irregular, germ cells were degenerated and often desquamated. The diameters of the seminiferous tubules and the height of the germinal epithelium were significantly decreased (both at ∗∗p<0.01), while the interstitial space was significantly increased (∗∗p<0.01) when compared to the controls. In the group of rats prenatally exposed to MR, the somatic and germ cells were rich in vacuoles and their organelles were often altered. Necrotizing cells were more frequent and empty spaces between Sertoli cells and germ cells were observed. The Leydig cells contained more lipid droplets. An increased Fluoro Jade - C and superoxide dismutase 2 positivity was detected in the rats exposed to MR. Our results confirmed adverse effects of MR on testicular development.
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Affiliation(s)
- Viera Almášiová
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic.
| | - Katarína Holovská
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Sandra Andrašková
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Viera Cigánková
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Zuzana Ševčíková
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Adam Raček
- Department of Morphological Disciplines, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Zuzana Andrejčáková
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Katarína Beňová
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, the Slovak Republic
| | - Štefan Tóth
- Department of Histology and Embryology, Faculty of Medicine, Pavol Jozef Safarik University in Kosice, Kosice, the Slovak Republic
| | - Eva Tvrdá
- Department of Animal Physiology, Slovak University of Agriculture in Nitra, Nitra, the Slovak Republic
| | - Ján Molnár
- Department of Theoretical and Industrial Electrical Engineering, Faculty of Electrical Engineering and Informatics, Technical University of Kosice, Kosice, the Slovak Republic
| | - Enikö Račeková
- Institute of Neurobiology of Biomedical Research Center of Slovak Academy of Sciences, the Slovak Republic
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Nizhelska O, Marynchenko L, Piasetskyi V. Biological Risks of Using Non-Thermal Non-Ionizing Electromagnetic Fields. INNOVATIVE BIOSYSTEMS AND BIOENGINEERING 2020. [DOI: 10.20535/ibb.2020.4.2.202452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Kumar A, Kaur S, Chandel S, Singh HP, Batish DR, Kohli RK. Comparative cyto- and genotoxicity of 900 MHz and 1800 MHz electromagnetic field radiations in root meristems of Allium cepa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109786. [PMID: 31698176 DOI: 10.1016/j.ecoenv.2019.109786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 09/26/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
In the last few decades, tremendous increase in the use of wireless electronic gadgets, particularly the cell phones, has significantly enhanced the levels of electromagnetic field radiations (EMF-r) in the environment. Therefore, it is pertinent to study the effect of these radiations on biological systems including plants. We investigated comparative cytotoxic and DNA damaging effects of 900 and 1800 MHz EMF-r in Allium cepa (onion) root meristematic cells in terms of mitotic index (MI), chromosomal aberrations (CAs) and single cell gel electrophoresis (comet assay). Onion bulbs were subjected to 900 and 1800 MHz (at power densities 261 ± 8.50 mW m-2 and 332 ± 10.36 mW m-2, respectively) of EMF-r for 0.5 h, 1 h, 2 h, and 4 h. Root length declined by 13.2% and 12.3%, whereas root thickness was increased by 46.7% and 48.3% after 4 h exposure to 900 MHz and 1800 MHz, respectively. Cytogenetic studies exhibited clastogenic effect of EMF-r as depicted by increased CAs and MI. MI increased by 36% and 53% after 2 and 4 h exposure to 900 MHz EMF-r, whereas it increased by 41% and 67% in response to 1800 MHz EMF-r. Aberration index was increased by 41%-266% and 14%-257% during 0.5-4 h of exposure to 900 MHz and 1800 MHz, respectively, over the control. EMF-r exposure decreased % head DNA (DNAH) and increased % tail DNA (DNAT) and olive tail moment (OTM) at both 900 and 1800 EMF-r. In 4 h exposure treatments, head DNA (%) declined by 19% and 23% at 900 MHz and 1800 MHz, respectively. DNAT and OTM were increased by 2.3 and 3.7 fold upon exposure to 900 MHz EMF-r over that in the control, whereas 2.8 and 5.8 fold increase was observed in response to 1800 MHz EMF-r exposure for 4 h and the difference was statistically significant. The study concludes that EMF-r in the communication range (900 and 1800 MHz) adversely affect root meristems in plants and induce cytotoxic and DNA damage. EMF-r induced DNA damage was more pronounced at 1800 MHz than that at 900 MHz.
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Affiliation(s)
- Arvind Kumar
- Department of Botany, Panjab University, Chandigarh, 160 014, India; Department of Botany, Government Degree College, Barsar, Hamirpur, 174 305, Himachal Pradesh, India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160 014, India.
| | - Shikha Chandel
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India.
| | | | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160 014, India; Central University of Punjab, City Campus, Mansa Road, Bathinda, 151 001, Punjab, India
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Sharaf NE, Galal AF, El-Sawy MS, Shalby AB, Sayed AH, Ahmed HH. Role of designed Bio-Geometrical forms in antagonizing neurobehavioral burden of Wi-Fi radiation: Evidence-based experimental study. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/bpj/1751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This study investigated the impact of Wi-Fi signals exposure on cognitive function and its relevant brain biomarkers and the possible role of designed Bio-Geometrical forms in restoring the neurobehavioral alterations resulting from the exposure to the emerging radiation.Rats were assigned into 3 groups; Gp I control group (away from exposure to radiation); Gp II, III were exposed to wireless router signals for 24 h for 6 months and Gp III was protected by a set of designed BioGeometrical shapes. Animals were tested for spatial memory, anxiety and emotionality in addition to the related neurotransmitters (dopamine, serotonin and acetylcholine) in different brain areas. Melatonin, Heat Shock Protein (HSP-70) and acetylcholine esterase (AchE) were also measured in various brain regions and histopathological examination was carried out as well. Wi-Fi radiation exposed group showed elevated anxiety level and impaired spatial memory. Moreover, significant decline in dopamine, serotonin and acetylcholine levels in the investigated brain areas has been recorded. Melatonin levels were decreased in the cortex, striatum and hippocampus while HSP-70 was depleted in the cortex only. Using Bio-Geometrical forms along with Wi-Fi exposure could combat the burden of Wi-Fi radiation. This was evidenced by the recovery of the anxiety level and the improvement of memory task. In addition, the presence of Bio-Geometrical shapes could retrieve dopamine, serotonin and acetylcholine as well as melatonin and HSP-70 levels This study provides solid foundation for the potential use of Bio-Geometrical shapes to modify the insult of Wi-Fi radiation on brain function and structure.
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Affiliation(s)
- Nevin E. Sharaf
- Department of Environmental and Occupational Medicine, National Research Centre, Giza, Egypt
| | - Asmaa F. Galal
- Narcotics, Ergogenics and Poisons Department, National Research Centre, Giza, Egypt
| | - Mohamed S. El-Sawy
- Department of Architecture, Faculty of engineering, Misr University, Giza, Egypt
| | - Aziza B. Shalby
- Department of Hormones, Medical Research Division, National Research Centre, Giza, Egypt
| | - Alaa H. Sayed
- Department of Hormones, Medical Research Division, National Research Centre, Giza, Egypt. 5Applied Medical Sciences Department, Community College in AlQurayyat Al-Jouf, Saudi Arabia
| | - Hanaa H. Ahmed
- Department of Hormones, Medical Research Division, National Research Centre, Giza, Egypt
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Masoumi A, Karbalaei N, Mortazavi SMJ, Shabani M. Radiofrequency radiation emitted from Wi-Fi (2.4 GHz) causes impaired insulin secretion and increased oxidative stress in rat pancreatic islets. Int J Radiat Biol 2018; 94:850-857. [DOI: 10.1080/09553002.2018.1490039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ali Masoumi
- Department of Physiology, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Karbalaei
- Department of Physiology, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S. M. J. Mortazavi
- Medical Physics and Medical Engineering Department, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Shabani
- Neuroscience Research Center, Neuropharmacology Institute, Kerman University of Medical Sciences, Kerman, Iran
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12
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A. M, M.B. S, S. N, S.M.J. M, A.R. M. Effect of Microwave Wi-Fi Radiation at Frequency of 2.4 GHz on Epileptic Behavior of Rats. J Biomed Phys Eng 2018; 8:185-192. [PMID: 29951445 PMCID: PMC6015645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/28/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND Electromagnetic fields (EMF) with different intensities are widely used at home, offices and public places.Today, there is a growing global concern about the effects of human exposure to EMFs. Epilepsy is one of the most common chronic neurological diseases, affecting 50 million people of all ages worldwide. We aimed to investigate the effect of exposure to Wi-Fi radiation on epileptic behavior of rats. MATERIALS AND METHODS 147 male rats, weighing 200-250 g, were divided into seven groups; negative control (no intervention), sham 1(distilled water), positive control (Pentylentetrazol [PTZ]), intervention group 1 (PTZ + Wi-Fi "off"), sham 2 (distilled water + Wi-Fi "off"), sham 3 (distilled water + Wi-Fi "on"), and intervention group 2 (PTZ + Wi-Fi "on"). The rats were exposed to Wi-Fi for 2h at a distance of 30cm from a commercial Wi-Fi router. Convulsive behaviors of rats were monitored and scored based on the intensity and type by measuring latency/threshold time, number of convulsions, sum of scores and durations of seizure, and duration of score 6 seizure. Kruskal-Wallis and Mann-Whitney U-tests were used to analyze the data. RESULTS Convulsion was observed in interventions Group 4 and Group 7, and positive control. The mean number of events, and sum of scores were significantly different in intervention 2 than other two groups. However, the differences in mean threshold, mean sum of durations and " time to show convulsion with score 6 " were not statistically significant (P>0.05). CONCLUSION Due to limitations of our study including the sample size, these findings should be interpreted with caution. In this study, exposure to 2.4 GHz Wi-Fi radiation showed significant beneficial effects on the epileptic behaviour of rats. More experiments are needed to verify if these exposures can be used as a therapeutic approach for amelioration of seizures in epilepsy.
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Affiliation(s)
- Mahmoudi A.
- Medical Student, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shojaeifard M.B.
- Physiology Department, Fasa University of Medical Sciences, Fasa, Iran
,Ionizing and Non-ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nematollahii S.
- Biostatistic Department, Medical sciences Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mortazavi S.M.J.
- Ionizing and Non-ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdizadeh A.R.
- Ionizing and Non-ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
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Siervo B, Morelli MS, Landini L, Hartwig V. Numerical evaluation of human exposure to WiMax patch antenna in tablet or laptop. Bioelectromagnetics 2018; 39:414-422. [PMID: 29709072 DOI: 10.1002/bem.22128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 03/16/2018] [Indexed: 11/07/2022]
Abstract
The use of wireless communication devices, such as tablets or laptops, is increasing among children. Only a few studies assess specific energy absorption rate (SAR) due to exposure from wireless-enabled tablets and laptops, in particular with Worldwide Interoperability for Microwave Access (WiMax) technology. This paper reports the estimation of the interaction between an E-shaped patch antenna (3.5 GHz) and human models, by means of finite-difference time-domain (FDTD) method. Specifically, four different human models (young adult male, young adult female, pre-teenager female, male child) in different exposure conditions (antenna at different distances from the human model, in different positions, and orientations) were considered and whole-body, 10 and 1 g local SAR and magnetic field value (Bmax) were evaluated. From our results, in some worst-case scenarios involving male and female children's exposure, the maximum radiofrequency energy absorption (hot spots) is located in more sensitive organs such as eye, genitals, and breast. Bioelectromagnetics. 39:414-422, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Beatrice Siervo
- Department of Information Engineering, University of Pisa, Pisa, Italy
| | - Maria Sole Morelli
- Research Center "E. Piaggio," School of Engineering, University of Pisa, Pisa, Italy
| | - Luigi Landini
- Department of Information Engineering, University of Pisa, Pisa, Italy.,Fondazione CNR-Regione Toscana, "G. Monasterio," Pisa, Italy
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Sage C, Burgio E. Electromagnetic Fields, Pulsed Radiofrequency Radiation, and Epigenetics: How Wireless Technologies May Affect Childhood Development. Child Dev 2017; 89:129-136. [PMID: 28504324 DOI: 10.1111/cdev.12824] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Mobile phones and other wireless devices that produce electromagnetic fields (EMF) and pulsed radiofrequency radiation (RFR) are widely documented to cause potentially harmful health impacts that can be detrimental to young people. New epigenetic studies are profiled in this review to account for some neurodevelopmental and neurobehavioral changes due to exposure to wireless technologies. Symptoms of retarded memory, learning, cognition, attention, and behavioral problems have been reported in numerous studies and are similarly manifested in autism and attention deficit hyperactivity disorders, as a result of EMF and RFR exposures where both epigenetic drivers and genetic (DNA) damage are likely contributors. Technology benefits can be realized by adopting wired devices for education to avoid health risk and promote academic achievement.
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Affiliation(s)
| | - Ernesto Burgio
- International Society of Doctors for Environment (ISDE) Scientific Office
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15
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de Pomerai DI, Iqbal N, Lafayette I, Nagarajan A, Kaviani Moghadam M, Fineberg A, Reader T, Greedy S, Smartt C, Thomas DWP. Microwave fields have little effect on α-synuclein aggregation in a Caenorhabditis elegans model of Parkinson's disease. Bioelectromagnetics 2016; 37:116-29. [PMID: 26879225 DOI: 10.1002/bem.21959] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 01/22/2016] [Indexed: 12/24/2022]
Abstract
Potential health effects of radiofrequency (RF) radiation from mobile phones arouse widespread public concern. RF fields from handheld devices near the brain might trigger or aggravate brain tumors or neurodegenerative diseases such as Parkinson's disease (PD). Aggregation of neural α-synuclein (S) is central to PD pathophysiology, and invertebrate models expressing human S have helped elucidate factors affecting the aggregation process. We have recently developed a transgenic strain of Caenorhabditis elegans carrying two S constructs: SC tagged with cyan (C) blue fluorescent protein (CFP), and SV with the Venus (V) variant of yellow fluorescent protein (YFP). During S aggregation in these SC+SV worms, CFP, and YFP tags are brought close enough to allow Foerster Resonance Energy Transfer (FRET). As a positive control, S aggregation was promoted at low Hg(2+) concentrations, whereas higher concentrations activated stress-response genes. Using two different exposure systems described previously, we tested whether RF fields (1.0 GHz CW, 0.002-0.02 W kg(-1); 1.8 GHz CW or GSM, 1.8 W kg(-1)) could influence S aggregation in SC+SV worms. YFP fluorescence in similar SV-only worms provided internal controls, which should show opposite changes due to FRET quenching during S aggregation. No statistically significant changes were observed over several independent runs at 2.5, 24, or 96 h. Although our worm model is sensitive to chemical promoters of aggregation, no similar effects were attributable to RF exposures.
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Affiliation(s)
| | - Nooria Iqbal
- School of Biology, University of Nottingham, Nottingham, United Kingdom
| | - Ivan Lafayette
- School of Biology, University of Nottingham, Nottingham, United Kingdom
| | - Archana Nagarajan
- School of Biology, University of Nottingham, Nottingham, United Kingdom
| | | | - April Fineberg
- School of Biology, University of Nottingham, Nottingham, United Kingdom
| | - Tom Reader
- School of Biology, University of Nottingham, Nottingham, United Kingdom
| | - Steve Greedy
- Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Chris Smartt
- Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham, United Kingdom
| | - David W P Thomas
- Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham, United Kingdom
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16
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Histological and histochemical study of the protective role of rosemary extract against harmful effect of cell phone electromagnetic radiation on the parotid glands. Acta Histochem 2016; 118:478-85. [PMID: 27155802 DOI: 10.1016/j.acthis.2016.04.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 11/20/2022]
Abstract
Electromagnetic fields (EMFs) are a class of non-ionizing radiation (NIR) that is emitted from mobile phone. It may have hazardous effects on parotid glands. So, we aimed to investigate the histological and histochemical changes of the parotid glands of rats exposed to mobile phone and study the possible protective role of rosemary against its harmful effect. Forty adult male albino rats were used in this study. They were classified into 4 equal groups. Group I (control), group II (control receiving rosemary), group III (mobile phone exposed group) and group IV (mobile exposed, rosemary treated group). Parotid glands were dissected out for histological and histochemical study. Moreover, measurement of oxidative stress markers; malondialdehyde (MDA) and total antioxidant capacity (TAC) was done. The results of this study revealed that rosemary has protective effect through improving the histological and histochemical picture of the parotid gland in addition of its antioxidant effect. It could be concluded from the current study, that exposure of parotid gland of rat models to electromagnetic radiation of mobile phone resulted in structural changes at the level of light and electron microscopic examination which could be explained by oxidative stress effect of mobile phone. Rosemary could play a protective role against this harmful effect through its antioxidant activity.
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17
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Tseng CH. LBMR: Load-Balanced Multipath Routing for Wireless Data-Intensive Transmission in Real-Time Medical Monitoring. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13060547. [PMID: 27258297 PMCID: PMC4924004 DOI: 10.3390/ijerph13060547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/15/2016] [Accepted: 05/21/2016] [Indexed: 06/05/2023]
Abstract
In wireless networks, low-power Zigbee is an excellent network solution for wireless medical monitoring systems. Medical monitoring generally involves transmission of a large amount of data and easily causes bottleneck problems. Although Zigbee's AODV mesh routing provides extensible multi-hop data transmission to extend network coverage, it originally does not, and needs to support some form of load balancing mechanism to avoid bottlenecks. To guarantee a more reliable multi-hop data transmission for life-critical medical applications, we have developed a multipath solution, called Load-Balanced Multipath Routing (LBMR) to replace Zigbee's routing mechanism. LBMR consists of three main parts: Layer Routing Construction (LRC), a Load Estimation Algorithm (LEA), and a Route Maintenance (RM) mechanism. LRC assigns nodes into different layers based on the node's distance to the medical data gateway. Nodes can have multiple next-hops delivering medical data toward the gateway. All neighboring layer-nodes exchange flow information containing current load, which is the used by the LEA to estimate future load of next-hops to the gateway. With LBMR, nodes can choose the neighbors with the least load as the next-hops and thus can achieve load balancing and avoid bottlenecks. Furthermore, RM can detect route failures in real-time and perform route redirection to ensure routing robustness. Since LRC and LEA prevent bottlenecks while RM ensures routing fault tolerance, LBMR provides a highly reliable routing service for medical monitoring. To evaluate these accomplishments, we compare LBMR with Zigbee's AODV and another multipath protocol, AOMDV. The simulation results demonstrate LBMR achieves better load balancing, less unreachable nodes, and better packet delivery ratio than either AODV or AOMDV.
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Affiliation(s)
- Chinyang Henry Tseng
- Computer Science and Information Engineering, National Taipei University, New Taipei 237, Taiwan.
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18
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Kim KH, Kabir E, Jahan SA. The use of cell phone and insight into its potential human health impacts. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:221. [PMID: 26965900 DOI: 10.1007/s10661-016-5227-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 03/03/2016] [Indexed: 06/05/2023]
Abstract
The rapid evolution of mobile phone technology has raised public concern about its possible association with adverse health effects. Given the huge number of mobile phone users at present days, even simple adverse health effects could have major implications. This article reviews the present knowledge concerning the health effects stemming from the use of cellular phones by emphasizing adverse biological effects, epidemiological issues, and indirect health effects. A line of epidemiological evidence suggests that there is no concrete association between mobile phone radiation and cancer. The evidence regarding the occurrence of cancer due to exposure to the radio frequency energy of mobile phones is nonetheless conflicting. Consequently, long-term research in this field is necessary to account for the vital issue of this scientific research to the public in a meaningful way.
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Affiliation(s)
- Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
| | - Ehsanul Kabir
- Department of Farm, Power and Machinery, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
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Hammerschlag R, Levin M, McCraty R, Bat N, Ives JA, Lutgendorf SK, Oschman JL. Biofield Physiology: A Framework for an Emerging Discipline. Glob Adv Health Med 2015; 4:35-41. [PMID: 26665040 PMCID: PMC4654783 DOI: 10.7453/gahmj.2015.015.suppl] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Biofield physiology is proposed as an overarching descriptor for the electromagnetic, biophotonic, and other types of spatially-distributed fields that living systems generate and respond to as integral aspects of cellular, tissue, and whole organism self-regulation and organization. Medical physiology, cell biology, and biophysics provide the framework within which evidence for biofields, their proposed receptors, and functions is presented. As such, biofields can be viewed as affecting physiological regulatory systems in a manner that complements the more familiar molecular-based mechanisms. Examples of clinically relevant biofields are the electrical and magnetic fields generated by arrays of heart cells and neurons that are detected, respectively, as electrocardiograms (ECGs) or magnetocardiograms (MCGs) and electroencephalograms (EEGs) or magnetoencephalograms (MEGs). At a basic physiology level, electromagnetic activity of neural assemblies appears to modulate neuronal synchronization and circadian rhythmicity. Numerous nonneural electrical fields have been detected and analyzed, including those arising from patterns of resting membrane potentials that guide development and regeneration, and from slowly-varying transepithelial direct current fields that initiate cellular responses to tissue damage. Another biofield phenomenon is the coherent, ultraweak photon emissions (UPE), detected from cell cultures and from the body surface. A physiological role for biophotons is consistent with observations that fluctuations in UPE correlate with cerebral blood flow, cerebral energy metabolism, and EEG activity. Biofield receptors are reviewed in 3 categories: molecular-level receptors, charge flux sites, and endogenously generated electric or electromagnetic fields. In summary, sufficient evidence has accrued to consider biofield physiology as a viable scientific discipline. Directions for future research are proposed.
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Affiliation(s)
- Richard Hammerschlag
- The Institute for Integrative Health, Baltimore, Maryland; Consciousness and Healing Initiative, San Diego, California; Oregon College of Oriental Medicine, Portland (Dr Hammerschlag)
| | - Michael Levin
- Tufts Center for Regenerative and Developmental Biology, Tufts University, Medford, Massachusetts (Dr Levin)
| | - Rollin McCraty
- Institute of HeartMath, Boulder Creek, California (Dr McCraty)
| | - Namuun Bat
- The Center for Brain, Mind, and Healing, Samueli Institute, Alexandria, Virginia (Ms Bat)
| | - John A Ives
- The Center for Brain, Mind, and Healing, Samueli Institute, Alexandria, Virginia (Dr Ives)
| | - Susan K Lutgendorf
- Departments of Psychology, Obstetrics and Gynecology, and Urology, University of Iowa, Iowa City (Dr Lutgendorf)
| | - James L Oschman
- Nature's Own Research Association, Dover, New Hampshire (Dr Oschman)
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Saili L, Hanini A, Smirani C, Azzouz I, Azzouz A, Sakly M, Abdelmelek H, Bouslama Z. Effects of acute exposure to WIFI signals (2.45GHz) on heart variability and blood pressure in Albinos rabbit. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:600-605. [PMID: 26356390 DOI: 10.1016/j.etap.2015.08.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 08/08/2015] [Accepted: 08/13/2015] [Indexed: 06/05/2023]
Abstract
Electrocardiogram and arterial pressure measurements were studied under acute exposures to WIFI (2.45GHz) during one hour in adult male rabbits. Antennas of WIFI were placed at 25cm at the right side near the heart. Acute exposure of rabbits to WIFI increased heart frequency (+22%) and arterial blood pressure (+14%). Moreover, analysis of ECG revealed that WIFI induced a combined increase of PR and QT intervals. By contrast, the same exposure failed to alter maximum amplitude and P waves. After intravenously injection of dopamine (0.50ml/kg) and epinephrine (0.50ml/kg) under acute exposure to RF we found that, WIFI alter catecholamines (dopamine, epinephrine) action on heart variability and blood pressure compared to control. These results suggest for the first time, as far as we know, that exposure to WIFI affect heart rhythm, blood pressure, and catecholamines efficacy on cardiovascular system; indicating that radiofrequency can act directly and/or indirectly on cardiovascular system.
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Affiliation(s)
- Linda Saili
- Laboratoire d'Ecologie des Systèmes Terrestres et Aquatiques, Faculté des Sciences, Université Badji Mokhtar, BP 12, 23005 Sidi Amar, Annaba, Algérie.
| | - Amel Hanini
- Laboratoire de Physiologie Intégrée, Faculté des Sciences, Université de Carthage, Jarzouna, Bizerte 7021, Tunisie
| | - Chiraz Smirani
- Laboratoire de Physiologie Intégrée, Faculté des Sciences, Université de Carthage, Jarzouna, Bizerte 7021, Tunisie
| | - Ines Azzouz
- Laboratoire de Physiologie Intégrée, Faculté des Sciences, Université de Carthage, Jarzouna, Bizerte 7021, Tunisie
| | - Amina Azzouz
- Laboratoire d'Ecologie des Systèmes Terrestres et Aquatiques, Faculté des Sciences, Université Badji Mokhtar, BP 12, 23005 Sidi Amar, Annaba, Algérie
| | - Mohsen Sakly
- Laboratoire de Physiologie Intégrée, Faculté des Sciences, Université de Carthage, Jarzouna, Bizerte 7021, Tunisie
| | - Hafedh Abdelmelek
- Laboratoire de Physiologie Intégrée, Faculté des Sciences, Université de Carthage, Jarzouna, Bizerte 7021, Tunisie
| | - Zihad Bouslama
- Laboratoire d'Ecologie des Systèmes Terrestres et Aquatiques, Faculté des Sciences, Université Badji Mokhtar, BP 12, 23005 Sidi Amar, Annaba, Algérie
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The effect of radiofrequency radiation generated by a Global System for Mobile Communications source on cochlear development in a rat model. The Journal of Laryngology & Otology 2014; 128:400-5. [PMID: 24784924 DOI: 10.1017/s0022215114000723] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE This study aimed to determine the effect of radiofrequency radiation generated by 900 and 1800 MHz Global System for Mobile Communications sources on cochlear development in the rat model. METHODS Eight pregnant albino Wistar rats were divided into three groups: control, 900 MHz and 1800 MHz. The latter two groups of pregnant rats were exposed to radiofrequency radiation for 1 hour per day starting on the 12th day of pregnancy until delivery. The rats in the control, 900 MHz and 1800 MHz groups gave birth to 24, 31 and 26 newborn rats respectively. Newborn rats in the 900 MHz and 1800 MHz groups were exposed to radiofrequency radiation for 1 hour per day for 21 days after delivery. Hearing evaluations of newborn rats were carried out using distortion product otoacoustic emissions testing. Eight newborn rats were randomly selected from each group for electron microscopic evaluation. RESULTS Distortion product otoacoustic emission tests revealed no significant difference among the groups, but electron microscopic evaluation revealed significant differences among the groups with regard to the number of normal, apoptotic and necrotic cells. CONCLUSION The findings indicated cellular structural damage in the cochlea caused by radiofrequency radiation exposure during cochlear development in the rat model.
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Effect of mobile phone use on salivary concentrations of protein, amylase, lipase, immunoglobulin A, lysozyme, lactoferrin, peroxidase and C-reactive protein of the parotid gland. The Journal of Laryngology & Otology 2014; 128:454-62. [PMID: 24739140 DOI: 10.1017/s0022215114000899] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The possibility of side effects associated with the electromagnetic waves emitted from mobile phones is a controversial issue. The present study aimed to evaluate the effect of mobile phone use on parotid gland salivary concentrations of protein, amylase, lipase, immunoglobulin A, lysozyme, lactoferrin, peroxidase and C-reactive protein. METHODS Stimulated salivary samples were collected simultaneously from both parotid glands of 86 healthy volunteers. Salivary flow rate and salivary concentrations of proteins, amylase, lipase, lysozyme, lactoferrin, peroxidase, C-reactive protein and immunoglobulin A, were measured. Data were analysed using t-tests and one-way analyses of variance. RESULTS Salivary flow rate and parotid gland salivary concentrations of protein were significantly higher on the right side compared to the left in those that predominantly held mobile phones on the right side. In addition, there was a decrease in concentrations of amylase, lipase, lysozyme, lactoferrin and peroxidase. CONCLUSION The side of dominant mobile phone use was associated with differences in salivary flow rate and parotid gland salivary concentrations, in right-dominant users. Although mobile phone use influenced salivary composition, the relationship was not significant.
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Ragy MM. Effect of exposure and withdrawal of 900-MHz-electromagnetic waves on brain, kidney and liver oxidative stress and some biochemical parameters in male rats. Electromagn Biol Med 2014; 34:279-84. [DOI: 10.3109/15368378.2014.906446] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Abstract
This review summarizes the current state of research on possible health effects of Wi-Fi (a commercial name for IEEE 802.11-compliant wireless networking). In response to public concerns about health effects of Wi-Fi and wireless networks and calls by government agencies for research on possible health and safety issues with the technology, a considerable amount of technology-specific research has been completed. A series of high quality engineering studies have provided a good, but not complete, understanding of the levels of radiofrequency (RF) exposure to individuals from Wi-Fi. The limited number of technology-specific bioeffects studies done to date are very mixed in terms of quality and outcome. Unequivocally, the RF exposures from Wi-Fi and wireless networks are far below U.S. and international exposure limits for RF energy. While several studies report biological effects due to Wi-Fi-type exposures, technical limitations prevent drawing conclusions from them about possible health risks of the technology. The review concludes with suggestions for future research on the topic.
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Affiliation(s)
- Kenneth R Foster
- *Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104; †Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI 53226
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Abstract
Autism spectrum conditions (ASCs) are defined behaviorally, but they also involve multileveled disturbances of underlying biology that find striking parallels in the physiological impacts of electromagnetic frequency and radiofrequency radiation exposures (EMF/RFR). Part I (Vol 776) of this paper reviewed the critical contributions pathophysiology may make to the etiology, pathogenesis and ongoing generation of behaviors currently defined as being core features of ASCs. We reviewed pathophysiological damage to core cellular processes that are associated both with ASCs and with biological effects of EMF/RFR exposures that contribute to chronically disrupted homeostasis. Many studies of people with ASCs have identified oxidative stress and evidence of free radical damage, cellular stress proteins, and deficiencies of antioxidants such as glutathione. Elevated intracellular calcium in ASCs may be due to genetics or may be downstream of inflammation or environmental exposures. Cell membrane lipids may be peroxidized, mitochondria may be dysfunctional, and various kinds of immune system disturbances are common. Brain oxidative stress and inflammation as well as measures consistent with blood-brain barrier and brain perfusion compromise have been documented. Part II of this paper documents how behaviors in ASCs may emerge from alterations of electrophysiological oscillatory synchronization, how EMF/RFR could contribute to these by de-tuning the organism, and policy implications of these vulnerabilities. It details evidence for mitochondrial dysfunction, immune system dysregulation, neuroinflammation and brain blood flow alterations, altered electrophysiology, disruption of electromagnetic signaling, synchrony, and sensory processing, de-tuning of the brain and organism, with autistic behaviors as emergent properties emanating from this pathophysiology. Changes in brain and autonomic nervous system electrophysiological function and sensory processing predominate, seizures are common, and sleep disruption is close to universal. All of these phenomena also occur with EMF/RFR exposure that can add to system overload ('allostatic load') in ASCs by increasing risk, and can worsen challenging biological problems and symptoms; conversely, reducing exposure might ameliorate symptoms of ASCs by reducing obstruction of physiological repair. Various vital but vulnerable mechanisms such as calcium channels may be disrupted by environmental agents, various genes associated with autism or the interaction of both. With dramatic increases in reported ASCs that are coincident in time with the deployment of wireless technologies, we need aggressive investigation of potential ASC-EMF/RFR links. The evidence is sufficient to warrant new public exposure standards benchmarked to low-intensity (non-thermal) exposure levels now known to be biologically disruptive, and strong, interim precautionary practices are advocated.
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Herbert MR, Sage C. Autism and EMF? Plausibility of a pathophysiological link - Part I. ACTA ACUST UNITED AC 2013; 20:191-209. [PMID: 24095003 DOI: 10.1016/j.pathophys.2013.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 05/06/2013] [Accepted: 07/15/2013] [Indexed: 01/02/2023]
Abstract
Although autism spectrum conditions (ASCs) are defined behaviorally, they also involve multileveled disturbances of underlying biology that find striking parallels in the physiological impacts of electromagnetic frequency and radiofrequency exposures (EMF/RFR). Part I of this paper will review the critical contributions pathophysiology may make to the etiology, pathogenesis and ongoing generation of core features of ASCs. We will review pathophysiological damage to core cellular processes that are associated both with ASCs and with biological effects of EMF/RFR exposures that contribute to chronically disrupted homeostasis. Many studies of people with ASCs have identified oxidative stress and evidence of free radical damage, cellular stress proteins, and deficiencies of antioxidants such as glutathione. Elevated intracellular calcium in ASCs may be due to genetics or may be downstream of inflammation or environmental exposures. Cell membrane lipids may be peroxidized, mitochondria may be dysfunctional, and various kinds of immune system disturbances are common. Brain oxidative stress and inflammation as well as measures consistent with blood-brain barrier and brain perfusion compromise have been documented. Part II of this paper will review how behaviors in ASCs may emerge from alterations of electrophysiological oscillatory synchronization, how EMF/RFR could contribute to these by de-tuning the organism, and policy implications of these vulnerabilities. Changes in brain and autonomic nervous system electrophysiological function and sensory processing predominate, seizures are common, and sleep disruption is close to universal. All of these phenomena also occur with EMF/RFR exposure that can add to system overload ('allostatic load') in ASCs by increasing risk, and worsening challenging biological problems and symptoms; conversely, reducing exposure might ameliorate symptoms of ASCs by reducing obstruction of physiological repair. Various vital but vulnerable mechanisms such as calcium channels may be disrupted by environmental agents, various genes associated with autism or the interaction of both. With dramatic increases in reported ASCs that are coincident in time with the deployment of wireless technologies, we need aggressive investigation of potential ASC - EMF/RFR links. The evidence is sufficient to warrant new public exposure standards benchmarked to low-intensity (non-thermal) exposure levels now known to be biologically disruptive, and strong, interim precautionary practices are advocated.
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Affiliation(s)
- Martha R Herbert
- TRANSCEND Research Program Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
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Atasoy HI, Gunal MY, Atasoy P, Elgun S, Bugdayci G. Immunohistopathologic demonstration of deleterious effects on growing rat testes of radiofrequency waves emitted from conventional Wi-Fi devices. J Pediatr Urol 2013; 9:223-9. [PMID: 22465825 DOI: 10.1016/j.jpurol.2012.02.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Accepted: 02/28/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To investigate effects on rat testes of radiofrequency radiation emitted from indoor Wi-Fi Internet access devices using 802.11.g wireless standards. METHODS Ten Wistar albino male rats were divided into experimental and control groups, with five rats per group. Standard wireless gateways communicating at 2.437 GHz were used as radiofrequency wave sources. The experimental group was exposed to radiofrequency energy for 24 h a day for 20 weeks. The rats were sacrificed at the end of the study. Intracardiac blood was sampled for serum 8-hydroxy-2'-deoxyguanosine levels. Testes were removed and examined histologically and immunohistochemically. Testis tissues were analyzed for malondialdehyde levels and prooxidant-antioxidant enzyme activities. RESULTS We observed significant increases in serum 8-hydroxy-2'-deoxyguanosine levels and 8-hydroxyguanosine staining in the testes of the experimental group indicating DNA damage due to exposure (p < 0.05). We also found decreased levels of catalase and glutathione peroxidase activity in the experimental group, which may have been due to radiofrequency effects on enzyme activity (p < 0.05). CONCLUSIONS These findings raise questions about the safety of radiofrequency exposure from Wi-Fi Internet access devices for growing organisms of reproductive age, with a potential effect on both fertility and the integrity of germ cells.
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Affiliation(s)
- Halil I Atasoy
- Departments of Pediatrics, Abant Izzet Baysal University School of Medicine, Bolu 14280, Turkey.
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Sowa P, Rutkowska-Talipska J, Sulkowska U, Rutkowski K, Rutkowski R. Ionizing and non-ionizing electromagnetic radiation in modern medicine. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.poamed.2012.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Singh HP, Sharma VP, Batish DR, Kohli RK. Cell phone electromagnetic field radiations affect rhizogenesis through impairment of biochemical processes. ENVIRONMENTAL MONITORING AND ASSESSMENT 2012; 184:1813-1821. [PMID: 21562792 DOI: 10.1007/s10661-011-2080-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 04/11/2011] [Indexed: 05/30/2023]
Abstract
Indiscriminate adoption and use of cell phone technology has tremendously increased the levels of electromagnetic field radiations (EMFr) in the natural environment. It has raised the concerns among the scientists regarding the possible risks of EMFr to living organisms. However, not much has been done to assess the damage caused to plants that are continuously exposed to EMFr present in the environment. The present study investigated the biochemical mechanism of interference of 900 MHz cell phone EMFr with root formation in mung bean (Vigna radiata syn. Phaseolus aureus) hypocotyls, a model system to study rhizogenesis in plants. Cell phone EMFr enhanced the activities of proteases (by 1.52 to 2.33 times), polyphenol oxidases (by 1.5 to 4.3 times), and peroxidases (by 1.5 to 2.0 times) in mung bean hypocotyls over control. Further, EMFr enhanced malondialdehyde (an indicator of lipid peroxidation), hydrogen peroxide, and proline content, indicating a reactive oxygen species-mediated oxidative damage in hypocotyls. It was confirmed by the upregulation in the activities of antioxidant enzymes (superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, catalase, and glutathione reductase) suggesting their possible role in providing protection against EMFr-induced oxidative damage. The study concluded that cell phone radiations affect the process of rhizogenesis through biochemical alterations that manifest as oxidative damage resulting in root impairment.
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Affiliation(s)
- Harminder Pal Singh
- Department of Environment and Vocational Studies, Panjab University, Chandigarh, 160014, India.
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Dode AC, Leão MMD, Tejo FDAF, Gomes ACR, Dode DC, Dode MC, Moreira CW, Condessa VA, Albinatti C, Caiaffa WT. Mortality by neoplasia and cellular telephone base stations in the Belo Horizonte municipality, Minas Gerais state, Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 409:3649-3665. [PMID: 21741680 DOI: 10.1016/j.scitotenv.2011.05.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 05/25/2011] [Accepted: 05/25/2011] [Indexed: 05/31/2023]
Abstract
Pollution caused by the electromagnetic fields (EMFs) of radio frequencies (RF) generated by the telecommunication system is one of the greatest environmental problems of the twentieth century. The purpose of this research was to verify the existence of a spatial correlation between base station (BS) clusters and cases of deaths by neoplasia in the Belo Horizonte municipality, Minas Gerais state, Brazil, from 1996 to 2006 and to measure the human exposure levels to EMF where there is a major concentration of cellular telephone transmitter antennas. A descriptive spatial analysis of the BSs and the cases of death by neoplasia identified in the municipality was performed through an ecological-epidemiological approach, using georeferencing. The database employed in the survey was composed of three data banks: 1. death by neoplasia documented by the Health Municipal Department; 2. BSs documented in ANATEL ("Agência Nacional de Telecomunicações": 'Telecommunications National Agency'); and 3. census and demographic city population data obtained from official archives provided by IBGE ("Instituto Brasileiro de Geografia e Estatística": 'Brazilian Institute of Geography and Statistics'). The results show that approximately 856 BSs were installed through December 2006. Most (39.60%) of the BSs were located in the "Centro-Sul" ('Central-Southern') region of the municipality. Between 1996 and 2006, 7191 deaths by neoplasia occurred and within an area of 500 m from the BS, the mortality rate was 34.76 per 10,000 inhabitants. Outside of this area, a decrease in the number of deaths by neoplasia occurred. The greatest accumulated incidence was 5.83 per 1000 in the Central-Southern region and the lowest incidence was 2.05 per 1000 in the Barreiro region. During the environmental monitoring, the largest accumulated electric field measured was 12.4 V/m and the smallest was 0.4 V/m. The largest density power was 40.78 μW/cm(2), and the smallest was 0.04 μW/cm(2).
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Affiliation(s)
- Adilza C Dode
- Minas Methodist University Center Izabela Hendrix, Belo Horizonte City, Minas Gerais State, Brazil.
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Corle C, Makale M, Kesari S. Cell phones and glioma risk: a review of the evidence. J Neurooncol 2011; 106:1-13. [PMID: 21853424 DOI: 10.1007/s11060-011-0663-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 07/04/2011] [Indexed: 01/12/2023]
Affiliation(s)
- Courtney Corle
- Department of Neurosciences, UC San Diego, Moores UCSD Cancer Center, 3855 Health Sciences Drive, MC 0819, La Jolla, CA 92093-0819, USA
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Lehrer S, Green S, Stock RG. Association between number of cell phone contracts and brain tumor incidence in nineteen U.S. States. J Neurooncol 2010; 101:505-7. [PMID: 20589524 DOI: 10.1007/s11060-010-0280-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Accepted: 06/21/2010] [Indexed: 11/26/2022]
Abstract
Some concern has arisen about adverse health effects of cell phones, especially the possibility that the low power microwave-frequency signal transmitted by the antennas on handsets might cause brain tumors or accelerate the growth of subclinical tumors. We analyzed data from the Statistical Report: Primary Brain Tumors in the United States, 2000-2004 and 2007 cell phone subscription data from the Governing State and Local Sourcebook. There was a significant correlation between number of cell phone subscriptions and brain tumors in nineteen US states (r = 0.950, P < 0.001). Because increased numbers of both cell phone subscriptions and brain tumors could be due solely to the fact that some states, such as New York, have much larger populations than other states, such as North Dakota, multiple linear regression was performed with number of brain tumors as the dependent variable, cell phone subscriptions, population, mean family income and mean age as independent variables. The effect of cell phone subscriptions was significant (P = 0.017), and independent of the effect of mean family income (P = 0.894), population (P = 0.003) and age (0.499). The very linear relationship between cell phone usage and brain tumor incidence is disturbing and certainly needs further epidemiological evaluation. In the meantime, it would be prudent to limit exposure to all sources of electro-magnetic radiation.
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Affiliation(s)
- Steven Lehrer
- Department of Radiation Oncology, Mount Sinai School of Medicine, New York, NY 10029, USA.
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Whole body exposure with GSM 900MHz affects spatial memory in mice. PATHOPHYSIOLOGY 2010; 17:179-87. [DOI: 10.1016/j.pathophys.2009.11.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Accepted: 11/01/2009] [Indexed: 01/01/2023] Open
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