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Sleep Quality in Medical Students; the Impact of Over-Use of Mobile Cell-Phone and Social Networks.

Quelle http://www.ncbi.nlm.nih.gov/

J Res Health Sci. 2016 Winter;16(1):46-50.


Mohammadbeigi A1, Absari R2, Valizadeh F3, Saadati M2, Sharifimoghadam S2, Ahmadi A4, Mokhtari M5, Ansari H6.


Author information


1Department of Epidemiology, School of Health, Health Policy and Promotion Research Center, Qom University Of Medical Sciences, Qom, Iran.

2Student Research Committee, Qom University of Medical Sciences, Qom, Iran.

3General Practitioner, Genetic Counselor, Deputy of Health, Mazandaran University of Medical Sciences, Babolsar, Iran.

4Modeling in Health Research Center, Department of Epidemiology, School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran.

5MSc of Epidemiology, Health Vic Chancellor, Arak University of Medical Sciences, Arak, Iran.

6Health Promotion Research Center, Department of Epidemiology and Biostatistics, Zahedan University of Medical Sciences, Zahedan, Iran. ansarih88@gmail.com.





Poor sleep quality is closely associated with lifestyle habits including use of mobile cell-phones.This study aimed to identify the relationship between sleep quality due to abuse in mobile cell-phones and engagement in social networks.



This cross-sectional study was conducted on 380 undergraduate students selected by proportional stratified sampling in Qom, Iran in 2015. Data were collected by two statndard questionnaire including Cell-Phone Over-Use Scale (COS) and Pittsburgh sleep quality questionnaire beside the status of usage in cell-phone social networks. T-test, chi-square, Pearson correlation coefficient and multivariate logistic regression were used in data analysis.



The mean age of participants was 21.8 ±3.2 yr, 69.1% were female, and 11.7% were married. The mean of COS and sleep quality scores were 48.18 ±17.5 and 5.38 ±2.31, respectively. The prevalence of over-use of cell phone was 10.7% (CI 0.95; 8.8%, 12.6%) and the prevalence of poor sleep quality was 61.7% (CI 0.95; 57.1%, 66.3%). The mean of all aspects and total score of sleep quality showed a direct significant association by cell-phone addiction score except sleep duration score that was inversely. Based on multivariate analysis affected to cell-phone addiction, being male gender and studying in general physician level are the most important predictors of poor sleep quality.



Over use of internet and social networks via smart phones is related to poor sleep quality and quantity. Predefined sport programs, educational, cultural, and interesting entertainment are the essential needs for all medical students. These interventions are more important especially for male students who have longer educational.



Cell-Phone Over-Use; Internet Addiction; Mobile Addiction; Sleep; Social Networks; Students


Quelle: http://www.ncbi.nlm.nih.gov/pubmed/27061997

Quelle: www.wsj.com

Multiyear, peer-reviewed study found ‘low incidences’ of two types of tumors in male rats exposed to type of radio frequencies commonly emitted by cellphones


Ryan Knutson

Updated May 28, 2016 11:58 a.m. ET

A major U.S. government study on rats has found a link between cellphones and cancer, an explosive finding in the long-running debate about whether mobile phones cause healt effects.


Quelle: http://www.wsj.com/articles/cellphone-cancer-link-found-in-government-study-1464324146

New Results


Report of Partial findings from the National Toxicology Program Carcinogenesis Studies of Cell Phone Radiofrequency Radiation in Hsd: Sprague Dawley® SD rats (Whole Body Exposure)


Michael Wyde, Mark Cesta, Chad Blystone, Susan Elmore, Paul Foster, Michelle Hooth, Grace Kissling, David Malarkey, Robert Sills, Matthew Stout, View ORCID Profile Nigel Walker, Kristine Witt, Mary Wolfe, John Bucher


doi: http://dx.doi.org/10.1101/055699


This article is a preprint and has not been peer-reviewed [what does this mean?].



The US National Toxicology Program (NTP) has carried out extensive rodent toxicology and carcinogenesis studies of radiofrequency radiation (RFR) at frequencies and modulations used in the US telecommunications industry. This report presents partial findings from these studies. The occurrences of two tumor types in male Harlan Sprague Dawley rats exposed to RFR, malignant gliomas in the brain and schwannomas of the heart, were considered of particular interest, and are the subject of this report. The findings in this report were reviewed by expert peer reviewers selected by the NTP and National Institutes of Health (NIH). These reviews and responses to comments are included as appendices to this report, and revisions to the current document have incorporated and addressed these comments. Supplemental information in the form of 4 additional manuscripts has or will soon be submitted for publication. These manuscripts describe in detail the designs and performance of the RFR exposure system, the dosimetry of RFR exposures in rats and mice, the results to a series of pilot studies establishing the ability of the animals to thermoregulate during RFR exposures, and studies of DNA damage. Capstick M, Kuster N, Kühn S, Berdinas-Torres V, Wilson P, Ladbury J, Koepke G, McCormick D, Gauger J, Melnick R. A radio frequency radiation reverberation chamber exposure system for rodents Yijian G, Capstick M, McCormick D, Gauger J, Horn T, Wilson P, Melnick RL and Kuster N. Life time dosimetric assessment for mice and rats exposed to cell phone radiation Wyde ME, Horn TL, Capstick M, Ladbury J, Koepke G, Wilson P, Stout MD, Kuster N, Melnick R, Bucher JR, and McCormick D. Pilot studies of the National Toxicology Program's cell phone radiofrequency radiation reverberation chamber exposure system Smith-Roe SL, Wyde ME, Stout MD, Winters J, Hobbs CA, Shepard KG, Green A, Kissling GE, Tice RR, Bucher JR, Witt KL. Evaluation of the genotoxicity of cell phone radiofrequency radiation in male and female rats and mice following subchronic exposure



The copyright holder for this preprint is the author/funder. It is made available under a CC-BY 4.0 International license.


Quelle: http://biorxiv.org/content/early/2016/05/26/055699

Quelle: http://microwavenews.com/

Cell Phone Radiation Boosts Cancer Rates in Animals; $25 Million NTP Study Finds Brain Tumors U.S. Government Expected To Advise Public of Health Risk;  



Quelle: http://microwavenews.com/news-center/ntp-cancer-results


"Too big to fail" - within a few years mobile telephony has become a world leading and irreplaceable communication technology. Notwithstanding its rapid spread, is it a possible carcinogen?

'Thank You For Calling' doesn’t only investigate the serious indications of potential health risks, but above all else tries to discover why this research has seen very little light within any public forums.

On the basis of facts, insiders and renowned protagonists the film reconstructs a major strategy of the mobile industry, making it a David verse Goliath type battle.


Producer: Klaus Scheidsteger & Die Schneiderei
Production year: 2015
Languages: German, English


Quelle: http://www.albatrossworldsales.com/#science;413

Measure - visualize - dejam

The quality management of the Gabriel-Tech GmbH is certified according to the German Technical Supervision Association (Technischer Überwachungs Verein, TÜV) (ISO 9001:2008) for the following scope: Produce of service in the fields of measuring, analyses, visualization and advice with respect to the magnetic field of the earth, electric and magnetic fields, electromagnetic waves as well as their common interactions (electromagnetic interaction potential).

You too, can make profit of our durable experiences and our professional practice. The Gabriel-Tech GmbH specialized to produce high quality and especially unique products.

We convince our partners and customers as reliable producers with creativity and marked innovation abilities concerning the development of specific solutions and all manufacturing processes. We manufacture high tech products according to strictly standardized preconditions for industries, real estates and commerce.

Within the scope of our quality management system we secure by continuous supervision that our products reach our customers in unchanged high quality.

Environmental technologies for health

"Environmental research is lastly also a health research because only in an unladed enviroment man can live in the long run in good conditions“ (http://www.fraunhofer.de/de/fraunhofer-forschungsthemen/gesundheit-ernaehrung-umwelt/umwelttechnologien.html, 26.03.2014)

The Gabriel-Tech GmbH with its measuring devices in cooperation with its scientific partners always makes an effort to timely evaluate potential harmful environments, create by intensive research new directed effective products and undertake them in all stages to exact laboratory investigations, in order to find solutions to reduce the corresponding loads.

Elektro mobility

By the year 2020 one million electro vehicles are expected to run in Germany – according to the „National Development Plan Electromobilty of the Federal Government“ (Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit (2009), cf. page 18). The potential of electro vehicles is seen „to free cities from pollutants, fine dust and noise and to increase in this way the quality of life (cf. page 89). Still - and this is not even concealed by the development plan - electromobility is not free of risks and weaknesses (cf. page 16-17).

Furthermore, there are other risks which are not mentioned in the plan of the Federal Government nor by other places. Laboratory investigations show – not only for electro vehicles, but also for modern hybrid – and internal combustion engine vehicles – non insignificant loads with respect to electromagnetic interference potentials. Especially with vehicles equipped with many electrical accessories; these loads should be taken seriously.

The Gabriel-Tech GmbH with its networks and its cooperations seem to be the only one having created a corresponding research program. The loads in vehicles are already such large that it seems necessary to develop products that have the ability to reduce these loads.

With respect to increasing radiation loads in our environment the consumer becomes more and more insecure. Industry branches like the mobile phone industry cannot admit problems because this would lead to indemnity law suits.

We, the team of the Gabriel-Tech, are able to quantify the problem and to visualize it. Then, in the following step, we can reduce the load significantly. Therefore, the slogan is valid for us: „There is no problem… because we do have the solution!“.

In that sense we wish you a tantalizing reading.

Your Gabriel-Team

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