Knowledgebase

EMR, sleep and diabetes

EMR Australia - Friday, March 07, 2008

For more than a decade there’s been convincing evidence that exposure to electromagnetic radiation changes brain wave patterns during sleep.

Now there’s evidence that such changes can be linked to diabetes.

A study published in the January issue of the Proceedings of the National Academy of Science in the US has found that depression of slow-wave sleep affects insulin production and increases risk of diabetes. 1 Slow-wave or deep, non-rapid eye movement sleep, is thought to be the most restorative of all stages of sleep.

“Our data suggest that reduced sleep quality with low levels of SWS [slow-wave sleep] … may contribute to increase the risk of type 2 diabetes,” say the authors.

The researchers, from the University of Chicago Medical Centre, conducted the study on nine healthy volunteers — five men and four women — aged 20 to 31.

In the first phase of the experiment, subjects were monitored for 8.5 hours of undisturbed sleep. In the second phase, over three consecutive nights, subjects were deprived of slow-wave sleep. Every time a volunteer’s brainwave pattern indicated he/she was entering this stage of sleep, a sound was directed to a speaker by the bed sufficient to disturb but not to wake the sleeper.

“This decrease in slow-wave sleep resembles the changes in sleep patterns caused by 40 years of aging,” said Dr Esra Tasali, assistant professor at the Centre. “Young adults spend 80 to 100 minutes per night in slow-wave sleep, while people over age 60 generally have less than 20 minutes.”

The researchers found that depression of slow-wave sleep over three nights caused the volunteers to become about 25% less sensitive to insulin — a change comparable to gaining 20 to 30 pounds. As insulin sensitivity declined, subjects needed more insulin to deal with the same amount of glucose in their bloodstreams. However, because their insulin production did not increase, subjects had a 23% increase in blood-glucose levels, which is comparable to levels in older adults with impaired glucose tolerance and increased diabetes risk.

“These findings demonstrate a clear role for slow-wave sleep in maintaining normal glucose control,” said Dr Tasali.

“A profound decrease in slow-wave sleep had an immediate and significant adverse effect on insulin sensitivity and glucose tolerance.”

One of the factors that has been repeatedly shown to affect sleep quality and brain wave patterns during sleep is electromagnetic radiation — both from electrical and communications sources.

In 1999, for example, a study by T Akerstedt found that volunteers exposed to a 50 Hz field of 10 milliGauss (one hundredth of the allowable Australian limit) showed reductions in sleep time, sleep efficiency, slow-wave sleep and slow-wave brain wave activity. 2

In the same year a study by A Borbely found that subjects exposed to mobile phone radiation of 900 MHz at night also had changes to slow-wave sleep. 3

Several studies have shown a more direct connection between EMR and diabetes from electrical sources. Dr Ivan Beal found an increased risk of diabetes among people living near a high voltage power line in New Zealand.4 Similarly, a Japanese study found that a 60 Hz field changed insulin release from cells. 5

Radiofrequency radiation also appears to affect blood-sugar levels. J Bielski found that the majority of workers exposed to radio waves in his study showed abnormal blood-sugar levels after being given a dose of glucose. 6 Canadian researcher M Havas showed that people exposed to “dirty electricity” (RF signals conducted through the electrical system) also had increased levels of blood-sugar problems. 7

It may be no coincidence, therefore, that the incidence of diabetes has risen dramatically in the last 20 years, a period that correlates with the rapid increase in electrical and telecommunications technologies. In that period the number of people affected has doubled in Australia, with approximately one in every four people affected.

References

1.Tasali, E et al, Proc Natl Acad Sci USA 105(3):1044-9, 2008.

2.Akerstedt, T et al, J Sleep Res 8(1):77-81, 1999.

3.Borbely A et al, Neurosci Lett 275(3):207-10, 1999.

4.Beal, I et al, Bioelectromagnetics 18(8):584-94, 1997.

5.Sakurai, T et al Bioelectromagnetics 25(3):160-6).

6.Bielski J et al, Med Pr 47(3):227-31, 1996.

7.Havas, M, Electromag Biol and Med 25259-68, 2006.

from 'EMR and Health' Mar 2008, vol 4 no 1


About The Author - Lyn McLean is a consumer advocate, author and educator and has been monitoring and writing on the subject of electromagnetic radiation (EMR) for over 20 years. She is the director of EMR Australia.


Follow on Feedly follow us in feedly


Trackback Link
http://www.emraustralia.com.au/BlogRetrieve.aspx?BlogID=419&PostID=619659&A=Trackback
Trackbacks
Post has no trackbacks.

Recent Posts

Categories

Tags

Dr John Dockerty Dr William Rea ARPANSA RF Standard Dr Siegal Sadetzki Dr Christine Aschermann Dr Linda Erdreich Dr Gilbert de Paula (MD) Professor Martin Pall Professor Rodney Croft Essex University Study Dr Hugh Taylor WHO Associate Professor Ray Kearney OAM Dr, Louis, Slesin Cindy Sage Mr Gary Melik Dr Dariuz Leszczynski SAM Model Dr De-Kun Li Dr Cornelia Waldmann-Selsam Dr Olga Naidenko E Lopez-Martin Michael Dolan Professor Hugo Lagercrantz Dr Mary Redmayne Dr Martin Pall John Cherry Ken Karipidis Dr Ron Overberg Prof Trevor Marshall Frank Clegg Stewart Committee Reports Dr Arpad Szallasi (MD) Dr Jean Monroe Dr Markus Kern Dr Fernando Saravi Dennis J Kucinich Grant Brecht Kaspersky Lab Dr Larry Marshall Professor Belpomme Dr Louis Slesin Dr Christopher Portier Dr Stephen Solomon Dr Lennart Hardell Professor Bruce Armstrong Frank Drews T Abelin US Senate Hearing Vijayalaxmi and Maria Scarfi IAFF Dr Lisa Nagy Salzburg Resolution Lennart Hardell Dr Jacquinta Lee Dr Lawrence Anukam Brett Moule Dr Stephanie McCarter (MD) Dr Michael Kundi Dr Asad Rahmani Dr Kenneth Foster A. Garcia SCENIHR Report Dr Priyanka Bandara Dr Igor Belyaev Dr Devra Davis Specific Absorption Rate (SARs) Sydney Council Phone Tower Forum Professor Anthony Miller Dr Ronald Powell Dr. Masayuki Tatemichi David Suzuki Michael Carlberg Jim Phillips Dr Dominique Belpomme Dr Don Masich John Patterson Dr James Suckling Venice Resolution Professor Michael Berk Catalyst Dr James Oschman Dr. Henry Lai Anne Silk Dr David Carpenter Ohio State University Dr Cyril Smith Paul Wentworth Prof Olle Johansson Prof Andrew Marino Dr. Neil Cherry Dr Maryanne Demasi Dr S Mortazavi Dr Magda Havas Alasdair Phillips Dr Dieudonné Mona Nilsson

Archive

SuMoTuWeThFrSa
  12345
6789101112
13141516171819
20212223242526
2728293031  

EMR Australia © 2017. All Rights Reserved. Terms & Conditions | Privacy | Sitemap | Adobe Business Catalyst Sydney