mobile phone radiation
Recently Published Documents


TOTAL DOCUMENTS

217
(FIVE YEARS 41)

H-INDEX

25
(FIVE YEARS 2)

Nutrients ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 339
Author(s):  
Ewelina Wardzinski ◽  
Kamila Jauch-Chara ◽  
Sarah Haars ◽  
Uwe Melchert ◽  
Harald Scholand-Engler ◽  
...  

Obesity and mobile phone usage have simultaneously spread worldwide. Radio frequency-modulated electromagnetic fields (RF-EMFs) emitted by mobile phones are largely absorbed by the head of the user, influence cerebral glucose metabolism, and modulate neuronal excitability. Body weight adjustment, in turn, is one of the main brain functions as food intake behavior and appetite perception underlie hypothalamic regulation. Against this background, we questioned if mobile phone radiation and food intake may be related. In a single-blind, sham-controlled, randomized crossover comparison, 15 normal-weight young men (23.47 ± 0.68 years) were exposed to 25 min of RF-EMFs emitted by two different mobile phone types vs. sham radiation under fasting conditions. Spontaneous food intake was assessed by an ad libitum standard buffet test and cerebral energy homeostasis was monitored by 31phosphorus-magnetic resonance spectroscopy measurements. Exposure to both mobile phones strikingly increased overall caloric intake by 22–27% compared with the sham condition. Differential analyses of macronutrient ingestion revealed that higher calorie consumption was mainly due to enhanced carbohydrate intake. Measurements of the cerebral energy content, i.e., adenosine triphosphate and phosphocreatine ratios to inorganic phosphate, displayed an increase upon mobile phone radiation. Our results identify RF-EMFs as a potential contributing factor to overeating, which underlies the obesity epidemic. Beyond that, the observed RF-EMFs-induced alterations of the brain energy homeostasis may put our data into a broader context because a balanced brain energy homeostasis is of fundamental importance for all brain functions. Potential disturbances by electromagnetic fields may therefore exert some generalized neurobiological effects, which are not yet foreseeable.


Author(s):  
Katerina Bartosova ◽  
Marek Neruda ◽  
Lukas Vojtech

The negative influence of non-ionizing electromagnetic radiation on organisms, including humans, has been discussed widely in recent years. This paper deals with the methodology of examining possible harmful effects of mobile phone radiation, focusing on in vivo and in vitro laboratory methods of investigation and evaluation and their main problems and difficulties. Basic experimental parameters are summarized and discussed, and recent large studies are also mentioned. For the laboratory experiments, accurate setting and description of dosimetry are essential; therefore, we give recommendations for the technical parameters of the experiments, especially for a well-defined source of radiation by Software Defined Radio.


Author(s):  
Nithila Kumaran ◽  
Kavitha Arunachalam

An electrically thin (0.024𝜆0) high-impedance surface (HIS) on a magneto-dielectric nanocomposite (NC) is presented as an external shield for wideband absorption of mobile phone radiation. Characterization of the NC and numerical design and analysis of the miniaturized HIS unit cell on NC (0.088𝜆0 × 0.088𝜆0) are presented over 0.85–6 GHz, where 𝜆0 is the free space wavelength at the absorber resonant frequency. The absorber performance is assessed using a mobile phone handset at 0.9 and 1.8 GHz Global System for Mobile Communications (GSM) frequencies and 2.4 GHz Wireless Fidelity (WiFi) frequency. Handset specific absorption rate (SAR) measurements with the absorber recorded in head phantom indicated 83, 48 and 71% reduction in peak SAR at 0.9, 1.8 and 2.4 GHz, respectively without significantly affecting the handset radiation characteristics in free space. Simulation results of human head model with the hand showed SAR reduction of 69, 24 and 65% at 0.9, 1.8 and 2.4 GHz, respectively for 1 g SAR. It is concluded that the proposed absorber could be used to lower handset SAR levels and shield mobile communication signals over 0.85–6 GHz.


2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Peter C Dartsch

QiOne® 2 Pro is a specific device which creates a static field that stimulates water molecules to undergo a transition into the coherent state. Since our body consists of about 70 to 85% of water (depending on age), this coherent state of the water molecules might increase the cellular resistance against exogenous reliabilities such as electromagnetic fields. In this study, the protective effect of QiOne® 2 Pro against mobile phone radiation was examined by using the cultured intestinal epithelial cells. Unprotected cells and untreated control cells served as point of reference. The cell regeneration process as well as the integrity of the intestinal epithelial barrier was investigated by measuring the transepithelial electrical resistance. Mobile phone radiation caused a reduced cell regenerative activity by approximately 60%, whereas the values were about 15% for QiOne® 2 Pro protected cells and untreated controls, respectively. Moreover, mobile phone radiation caused a rupture on the epithelial barrier in unprotected cells by cell death caused due to the oxidative stress with a complete loss of morphological integrity on the barrier. In contrast, untreated controls and QiOne® 2 Pro protected cells did not show any morphological change on the cell layers with an epithelial barrier of a 10-fold higher transepithelial electrical resistance than the unprotected cells. Overall the results clearly demonstrate the sensitivity of intestinal barrier against oxidative stress generated by mobile phone radiation. In addition, the results also show that the QiOne® 2 Pro device is able to reduce unwanted cellular effects of mobile phone radiation.


Author(s):  
Nargess Moghadasi ◽  
Iraj Alimohammadi ◽  
Ali Safari Variani ◽  
Azadeh Ashtarinezhad

Objective: Due to the growing use of communication instruments such as cell phones and wireless devices, there is growing public concern about possible harmful effects, especially in sensitive groups such as pregnant women. This study aimed to investigate the oxidative stress induced by exposure to 900 MHz mobile phone radiation and the effect of vitamin C intake on reducing possible changes in pregnant mice. Materials and methods: Twenty-one pregnant mice were divided into three groups (control, mobile radiation-exposed, and mobile radiation plus with vitamin C intake co-exposed (200 mg /kg)). The mice in exposure groups were exposed to 900 MHz, 2 watts, and a power density of 0.045 μw /cm2 mobile radiation for eight hours/day for ten consecutive days. After five days of rest, MDA (Malondialdehyde), 8-OHdG (8-hydroxy-2' -deoxyguanosine), and TAC (Total Antioxidant Capacity) levels were measured in the blood of animals. The results were analyzed by SPSS.22.0 software. Results: The results showed that exposure to mobile radiation increased MDA (P=0.002), and 8-OHdG (P=0.001) significantly and decreased Total Antioxidant Capacity in the exposed groups (P=0.001). Taking vitamin C inhibited the significant increase in MDA and 8-OHdG levels in exposed groups. Conclusion: Although exposure to mobile radiation can cause oxidative stress in the blood of pregnant mice, vitamin C as an antioxidant can prevent it.  


Author(s):  
M. P. Revanth ◽  
S. Aparna ◽  
Parangimalai Diwakar Madankumar ◽  
K. Ranganathan

Background: The usage of mobile phone had been increased drastically which created a major health concern among the people about the radiation emitted from mobile phones. Hence this study was aimed to evaluate the Micronuclei (MN) frequency in exfoliated oral mucosal cells in high and low mobile users based on Specific absorption rate (SAR) value.Methods: The total of 60 subjects were divided into two major groups: low SAR mobile phone users and high SAR mobile phone users. Further, Subjects who use mobile phone for more than 3 hours a week was considered as high talk time users and less than 3 hours a week was low talk time users. The buccal mucosa cells extracted by slightly scraping the oral cavity with a wooden spatula. For staining, Giemsa stain was used. Micronuclei were evaluated in 1000 cells per individual at the microscope.Results: The result show prolonged talk time may interfere with the development of micronuclei in individuals who use mobile phone for more than 3 hours per week rather than high SAR value showing a significant increase in frequency of micronuclei formation.Conclusions: The study showed mobile phone radiation had adverse effects on buccal mucosal cells.


Author(s):  
Erkin Özdemir ◽  
Ülkü Çömelekoglu ◽  
Evren Degirmenci ◽  
Gülsen Bayrak ◽  
Metin Yildirim ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document