scholarly journals Mobile Phone Radiation Deflects Brain Energy Homeostasis and Prompts Human Food Ingestion

Nutrients ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 339
Author(s):  
Ewelina Wardzinski ◽  
Kamila Jauch-Chara ◽  
Sarah Haars ◽  
Uwe Melchert ◽  
Harald Scholand-Engler ◽  
...  
Keyword(s):  
Food Intake ◽  
Mobile Phone ◽  
Electromagnetic Fields ◽  
Mobile Phones ◽  
Energy Homeostasis ◽  
Energy Content ◽  
Resonance Spectroscopy ◽  
Brain Functions ◽  
Mobile Phone Radiation ◽  
Brain Energy

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.

scholarly journals Synergistic Effect of Radiofrequency Electromagnetic Fields of Dental Light Cure Devices and Mobile Phones Accelerating Microleakage of Amalgam Restorations: An in vitro Study

2019 ◽  
Vol 9 (2Apr) ◽  
Author(s):  
S M J Mortazavi ◽  
A Dehghani Nazhvani ◽  
M Paknahad
Keyword(s):  
Mobile Phone ◽  
Electromagnetic Fields ◽  
Mobile Phones ◽  
In Vitro Study ◽  
Control Group ◽  
Human Teeth ◽  
Fourth Group ◽  
Mobile Phone Radiation ◽  
Amalgam Restorations

Background: Previous studies have shown that exposure to electromagnetic fields produced by magnetic resonance imaging or mobile phones can lead to increased microleakage of dental amalgam.Objective: The aim of the present study was to investigate the effect of electromagnetic field of a commercial dental light cure device and a common GSM mobile phone on microleakage of amalgam restorations.Materials and Methods: Identical class V cavities were prepared on the buccal surfaces of 60 non-carious extracted human teeth. The samples were randomly divided into 4 groups of 20 samples each. The samples in the first group were not exposed to electromagnetic fields, while the second and the third groups were exposed to electromagnetic fields produced by a commercial light cure device, or mobile phone radiation (60 min), respectively. The fourth group was exposed to electromagnetic radiations emitted by both mobile phone for 60 min and light cure device. Then, teeth samples were scored for microleakage according to a standard dye penetration protocol by examination under a stereomicroscope.Results: The mean score of microleakage in the fourth group (light cure + mobile phone) was significantly higher than that of the control group (P =0.030). Moreover, the scores of microleakage in this group were significantly higher than that of the second group (light cure only) (P= 0.043).Conclusion: Exposure of amalgam restorations to electromagnetic fields produced by both light cure devices and mobile phones can synergistically increase the microleakage of amalgam restorations.

scholarly journals EFFECT OF MOBILE PHONE RADIATION ON ADRENAL GLAND OF MALE ALBINO RATS

2020 ◽  
Vol 28 (1) ◽  
Author(s):  
Shalini Gupta ◽  
Shilpi Jain ◽  
Satyam Khare ◽  
Prateek Gautam
Keyword(s):  
Adrenal Gland ◽  
Mobile Phone ◽  
Radiation Exposure ◽  
Mobile Phones ◽  
Adrenal Glands ◽  
Cellular Level ◽  
Control Group ◽  
Albino Rats ◽  
Hormonal Changes ◽  
Mobile Phone Radiation

Introduction: The tremendous growth in telecommunication world has increased the number of mobile phone users to many folds. The benefits of cell phones are just half the picture. The other half may be a darker one. The main aim of this study is to observe the effect of electromagnetic radiation being emitted by mobile phones on adrenal gland microanatomy and the hormones released by the gland on male albino rats. Materials and methods: Forty-two male albino rats of Spargue-Dawley species were divided into two equal groups. The experimental group rats were exposed to mobile phone radiation operating at 900 MHz while the control group rats were not. At the end of every two months, seven rats were sacrificed to analyse histological and hormonal changes. Results: No changes were seen at the cellular level of the adrenal glands even after six months of radiation exposure. Hormonal assay showed a variation in the cortisol levels of the rats but the changes were within normal range. Conclusions: Lack of appreciable changes in the cellular morphology and hormonal levels even after six months of radiation exposure signify that the adrenal glands are not affected by exposure to mobile phones.

scholarly journals Mechanism of short-term ERK activation by electromagnetic fields at mobile phone frequencies

2007 ◽  
Vol 405 (3) ◽  
pp. 559-568 ◽  
Author(s):  
Joseph Friedman ◽  
Sarah Kraus ◽  
Yirmi Hauptman ◽  
Yoni Schiff ◽  
Rony Seger
Keyword(s):  
Mobile Phone ◽  
Electromagnetic Fields ◽  
Mobile Phones ◽  
Egf Receptor ◽  
Nadh Oxidase ◽  
Mitogen Activated Protein Kinase ◽  
Heparin Binding ◽  
Cellular Processes ◽  
Mapk Cascades ◽  
Mitogen Activated Protein

The exposure to non-thermal microwave electromagnetic fields generated by mobile phones affects the expression of many proteins. This effect on transcription and protein stability can be mediated by the MAPK (mitogen-activated protein kinase) cascades, which serve as central signalling pathways and govern essentially all stimulated cellular processes. Indeed, long-term exposure of cells to mobile phone irradiation results in the activation of p38 as well as the ERK (extracellular-signal-regulated kinase) MAPKs. In the present study, we have studied the immediate effect of irradiation on the MAPK cascades, and found that ERKs, but not stress-related MAPKs, are rapidly activated in response to various frequencies and intensities. Using signalling inhibitors, we delineated the mechanism that is involved in this activation. We found that the first step is mediated in the plasma membrane by NADH oxidase, which rapidly generates ROS (reactive oxygen species). These ROS then directly stimulate MMPs (matrix metalloproteinases) and allow them to cleave and release Hb-EGF [heparin-binding EGF (epidermal growth factor)]. This secreted factor activates the EGF receptor, which in turn further activates the ERK cascade. Thus this study demonstrates for the first time a detailed molecular mechanism by which electromagnetic irradiation from mobile phones induces the activation of the ERK cascade and thereby induces transcription and other cellular processes.

Long-Term Mobile Phone Use Leads to Brain Tumors

2015 ◽  
pp. 630-639
Author(s):  
Lai Lei Lou
Keyword(s):  
Brain Tumors ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Acoustic Neuroma ◽  
Mobile Phone Use ◽  
One Year ◽  
Mobile Phone Radiation

Although mobile phones have proved to be lifesaving in certain circumstances, wide concerns have been raised about brain tumors associated with their use. This article systematically reviews previous and current research in regards to mobile phone use and brain tumors. Recently, research (more than 10 years mobile phone use or cumulative mobile phone use more than 1640 hours) has been found that the amount of exposure to mobile phone radiation plays a key role in determining the significant associations between mobile phone use and gliomas, and acoustic neuroma. In general, those who use mobile phones for more than ten years, or cumulative call time for more than 1640 hours, have higher risks to develop brain tumors, especially glioma and acoustic neuroma, than those who use mobile phones for less than one year.

scholarly journals Ameliorative effects of high-protein diet on hepatotoxic alterations in Swiss albino mice exposed to mobile phone radiation

2021 ◽  
Vol 64 ◽  
pp. 258-264
Author(s):  
Debajyoti Bhattacharya ◽  
Prerona Biswas ◽  
Somnath Gangopadhyay ◽  
Mausumi Sikdar Bhakta
Keyword(s):  
Electromagnetic Radiation ◽  
Mobile Phone ◽  
Mobile Phones ◽  
High Protein Diet ◽  
Normal Diet ◽  
Exposed Group ◽  
High Protein ◽  
Protein Diet ◽  
Swiss Albino Mice ◽  
Mobile Phone Radiation

Objectives: Nowadays, mobile phones have become a prime necessity. At present, various advance networking connections such as 3G and 4G are available in the market to get a faster service. However, these mobile phones emit harmful electromagnetic radiations which have various ill effects on different physiological systems. The present study has been done to find out the extent of damage caused by mobile phone radiation on liver cells, and, whether high-protein diet (HPD) has any ameliorative effect on such changes. Materials and Methods: Male Swiss Albino mice were divided into four groups. Two groups of animals were exposed to mobile phone radiation at global system for mobile communications like frequencies at 1.8 GHz for 3 h continuously per day for 90 days. One of these radiation exposed groups received a normal diet (containing 5% casein) and the other exposed group received a HPD (supplemented with 20% casein). The control group animals received only a normal diet, while the animals of the remaining group received only a HPD. The serum biochemical and histological parameters of liver tissues and ladder assay of hepatic DNA were studied. Results: A significantly elevated level (P < 0.05) of aspartate aminotransferase, alanine transaminase, bilirubin and serum caspase-3 levels was observed in the group of animals exposed to electromagnetic radiation emitted from mobile phone. Histological changes were also observed in the experimental groups. Moreover, in genomic DNA ladder assay, fragmented DNA was observed in exposed group, which is a probable sign of cell apoptosis. Recovery symptoms were observed in the animals supplemented with high casein diet. Conclusion: From the present study, it may be concluded that electromagnetic radiation emitted from mobile phones has damaging effects on hepatocytes which may be ameliorated by HPD.

EFFECT OF MAGNETIC FIELD FROM MOBILE PHONE ON CENTRAL NERVOUS SYSTEM

2015 ◽  
Vol 8 (3) ◽  
pp. 2267-2277
Author(s):  
Dr. Esmail Ali
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Adverse Effects ◽  
Electromagnetic Radiation ◽  
Mobile Phone ◽  
Human Health ◽  
Microwave Radiation ◽  
Electromagnetic Fields ◽  
Mobile Phones ◽  
Base Station

Devices such as mobile phones, wireless internet modems, and radios and televisions, which occupy an important place in social life, produce electromagnetic fields (EMFs). Widespread use of these devices in daily life increases the intensity of exposure to EMFs on a day to day basis. Investigation of the effects on health of devices such as mobile phones used in close proximity to the body is attracting considerable interest from scientists. Mobile phones manufactured using the latest technology operate in a high frequency range (300–3000 MHz). This further heightens concerns regarding the effect of mobile phones on human health. Most Global System for Mobile Communications (GSM) operators in Europe, Asia, and Africa use a frequency of 900 MHz. With the rapid development of electronic information and communication techniques, exposure to electromagnetic fields (EMFs) has increased dramatically. Some studies have focused on the biological effects of electromagnetic radiation. Microwave radiation has been reported as producing adverse effects in the central nervous system (CNS), including headache, sleep disorders, anxiety, cognitive dysfunction and neurogenesis impairment in both humans and animals. However, the direct effects of microwave radiation on neurodevelopment and the underlying mechanisms for any such effects remain unknown. As per today’s global scenario use of mobile phone is increasing day by day for communication. Due to its constant use, the electromagnetic radiation (EMR) emitted from the cell phone, base station and other household appliances cause adverse effects on human health. There is an increase concern about the interaction of EMR generated from mobile phones, with the human organs specially with brain because of its close and long proximity to human brain during the mobile usage. Concerns have shown whether these exposures could have effect on brain and central nervous system (CNS).

scholarly journals Study of the effect of mobile phones on hearing

2021 ◽  
Vol 7 (3) ◽  
pp. 520
Author(s):  
Karumuthil Swaroop ◽  
Sanjay Kumar ◽  
Anshul Bansal ◽  
Pushkar Khare ◽  
Deepak V. Chauhan ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Systemic Disease ◽  
Hearing Threshold ◽  
Cross Sectional Study ◽  
P Value ◽  
Cross Sectional ◽  
Inner Ear Disease ◽  
Mobile Phone Usage ◽  
Mobile Phone Radiation

<p><strong>Background</strong>:<strong> </strong>The effect of mobile phone radiation on human health is the subject of recent interest and study as a result of the enormous increase in mobile phone usage throughout the world. The present study was designed with an objective to study the effect of mobile phones on hearing.</p><p><strong>Methods</strong>: This cross sectional study involved cases in the age group of 18 to 45 years attending the out-patient department of ENT at Chhatrapati Shivaji Subharti hospital, Meerut. A total of 85 patients (mobile phone users) were taken for the study October 2018 to July 2020. Subjects with usage of mobile phones (smart phones) for a minimum of 2 hours a day and a minimum of 1 year duration (with or without ear phones), normal healthy individuals with no systemic disease, normal tympanic membrane with no prior external, middle/inner ear disease or discharge or trauma and subjects with type a tympanogram (on tympanometry) were included in the study. Degree of deafness was graded according to WHO classification, 1980</p><p><strong>Results</strong>: Statistically significant p value was observed (&lt;0.001) while comparing SNHL with hours of exposure and years of exposure. Statistically significant p value was observed (&lt;0.05) while comparing hours of exposure with Tinnitus. Statistically insignificant p value was observed while comparing hours and years of exposure with other associated complaints; aural fullness, ear ache (otalgia) and warmth sensation in ear.</p><p><strong>Conclusions</strong>: The present study shows an increase in the hearing threshold of the ear exposed to the prolonged use of mobile phones.</p>

scholarly journals Investigation of factors affecting power density radiation of mobile phones

2020 ◽  
Vol 9 (1) ◽  
pp. 223
Author(s):  
Ilesanmi B. Oluwafemi ◽  
Johnson O. Adeoye ◽  
Deji M. Faluru ◽  
Dorcas D. Obasanya
Keyword(s):  
General Population ◽  
Ionizing Radiation ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Cell Phone ◽  
Reference Level ◽  
Population Exposure ◽  
Radiation Level ◽  
Factors Affecting ◽  
Mobile Phone Radiation

The use of mobile phones in Nigeria has greatly increased in the recent year. This has also increased the general population exposure to mobile phone radiation. In this research, the intensity of radiation around selected mobile phones base on some factors are investigated using Radiofrequency Meter (RF) TM-96, 9V DC and Spectrum Analyzer (NA-773, 144/430 MHz) in a bid to confirm how they affect the radiation level. Measurements were taken at distances of 5 cm from the mobile phones when seeking for connections, calls establishing and calls connections under different conditions such as periods of the day, when charging and when not charging, battery charged levels, single and dual SIMs and network signal levels. The radiation levels from the 5 selected mobile phones ranges from 0.3204 to 0.4824 mW/cm2 during call conversation, with the highest radiating mobile phone being Asus while the least was Infinix 3. The radiation levels of these mobile phones are above the International Commission on Non-ionizing Radiation Protection (ICNIRP) reference level, 0.45 mW/cm2. Results also shows that the cell phone battery level, network signal level, the number of inserted SIM cards increases the radiation level of the mobile phones.  

Hunger

2020 ◽  
Author(s):  
Neil E. Rowland
Keyword(s):  
Food Intake ◽  
Metabolic Rate ◽  
Early Life ◽  
Environmental Variables ◽  
Energy Homeostasis ◽  
Energy Content ◽  
Resting Metabolic Rate ◽  
Theoretical Concept ◽  
Excess Energy ◽  
Nutrient Depletion

Hunger is a specific and compelling sensation, sometimes arising from internal signals of nutrient depletion but more often modulated by numerous environmental variables including taste or palatability and ease or cost of procurement. Hunger motivates appetitive or foraging behaviors to find food followed by appropriate proximate or consummatory behaviors to eat it. A critical concept underlying food intake is the flux of chemical energy through an organism. This starts with inputs of food with particular energy content, storage of excess energy as adipose tissue or glycogen, and finally energy expenditure as resting metabolic rate (RMR) or as metabolic rate is modified by physical activity. These concepts are relevant within the context of adequate theoretical accounts based in energy homeostasis; historically, these are mainly static models, although it is now clear that these do not address practical issues such as weight gain through life. Eating is essentially an episodic behavior, often clustered as meals, and this has led to the idea that the meal is a central theoretical concept, but demonstrations that meal patterns are greatly influenced by the environment present a challenge to this tenet. Patterns of eating acquired during infancy and early life may also play a role in establishing adult norms. Direct controls of feeding are those that emphasize food itself as generating internal signals to modify or terminate an ongoing bout of eating, and include a variety of enteroendocrine hormones and brainstem mechanisms. Additionally, many studies point to the essential rewarding or hedonic aspects of food intake, including palatability, and this may involve integrative mechanisms in the forebrain and cerebral cortex.

scholarly journals Radio Frequency Electromagnetic Fields Exposure Assessment in Indoor Environments: A Review

2019 ◽  
Vol 16 (6) ◽  
pp. 955 ◽  
Author(s):  
Emma Chiaramello ◽  
Marta Bonato ◽  
Serena Fiocchi ◽  
Gabriella Tognola ◽  
Marta Parazzini ◽  
...  
Keyword(s):  
Wireless Communications ◽  
Radio Frequency ◽  
Mobile Phone ◽  
Electromagnetic Fields ◽  
Mobile Phones ◽  
Frequency Band ◽  
Time Dependent ◽  
Indoor Environments ◽  
Mean Values ◽  
Indoor Sources

Exposure to radiofrequency (RF) electromagnetic fields (EMFs) in indoor environments depends on both outdoor sources such as radio, television and mobile phone antennas and indoor sources, such as mobile phones and wireless communications applications. Establishing the levels of exposure could be challenging due to differences in the approaches used in different studies. The goal of this study is to present an overview of the last ten years research efforts about RF EMF exposure in indoor environments, considering different RF-EMF sources found to cause exposure in indoor environments, different indoor environments and different approaches used to assess the exposure. The highest maximum mean levels of the exposure considering the whole RF-EMF frequency band was found in offices (1.14 V/m) and in public transports (0.97 V/m), while the lowest levels of exposure were observed in homes and apartments, with mean values in the range 0.13–0.43 V/m. The contribution of different RF-EMF sources to the total level of exposure was found to show slightly different patterns among the indoor environments, but this finding has to be considered as a time-dependent picture of the continuous evolving exposure to RF-EMF.

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