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Showing posts with label cataract. Show all posts
Showing posts with label cataract. Show all posts

Thursday, September 27, 2012

Better Let Go of that Cell Phone

Opinion: Cell Phone Health Risk?

Security concerns during the Cold War may have led to the generation of misinformation on the physiological effects of microwave radiation from mobile phones.

Natural Health News has over 100 posts about cell phone and health, use our search window to read more...
By Allan H. Frey | September 25, 2012
Recently, Congress tasked its investigative arm, the General Accountability Office (GAO), to consider the health risks of mobile phones and to report back to Congress. While a previous report published in May 2010 by the US Food and Drug Administration (FDA) stated that there was no evidence of increased health risk resulting from exposure to the radiofrequency (microwave) energy emitted by cell phones, the World Health Organization reported the following year that cell phone radiation may be carcinogenic. Also in 2011, the director of the National Institute on Drug Abuse published a paper in JAMA reporting that 50 minutes of cell phone use by people altered glucose metabolism in the part of the brain closest to where the cell phone antennas were located. This summer, the GAO completed the task and sent a report to Congress stating that the risks were unclear and deserved greater scrutiny from the government.
The Federal Communications Commission (FCC)  “should formally reassess and, if appropriate, change its current RF energy (microwave) exposure limit and mobile phone testing requirements related to likely usage configurations, particularly when phones are held against the body,” the GAO wrote.
The controversy over whether the technology poses a risk to human health is substantial. And while much of science could be considered controversial, what has, and is, happening in microwave research is not a routine scientific dispute. Concerns about the health risks of cell phones, confusion regarding the evidence for or against such risks, and even misinformation in the scientific literature may all be collateral damage of the Cold War between the USSR and the United States. This was a time when the use of microwave-generating equipment, such as radar, was seen by some as critical to the security of the United States, and efforts were taken to ensure that such innovations were not suppressed by findings that suggested such technology to be unsafe.
Hiding data
During the Cold War, a group at Brooks Air Force Base (AFB) was tasked with reassuring residents when the Air Force wanted to install radar (microwaves) in their neighborhood. To meet that responsibility, the Brooks group hired contractors to write Environmental Impact Statements to justify the placing of the radars—an obvious conflict of interest. Even worse, when a scientist did publish findings that might indicate a risk, Brooks selected contractors to do experiments that suggested the scientist’s research was invalid or not relevant to the safety of Air Force radar.
For example, after my colleagues and I published in 1975 that exposure to very weak microwave radiation opens the regulatory interface known as the blood brain barrier (bbb), a critical protection for the brain, the Brooks AFB group selected a contractor to supposedly replicate our experiment. For 2 years, this contractor presented data at scientific conferences stating that microwave radiation had no effect on the bbb. After much pressure from the scientific community, he finally revealed that he had not, in fact, replicated our work. We had injected dye into the femoral vein of lab rats after exposure to microwaves and observed the dye in the brain within 5 minutes. The Brooks contractor had stuck a needle into the animals’ bellies and sprayed the dye onto their intestines. Thus it is no surprise that when he looked at the brain 5 minutes later, he did not see any dye; the dye had yet to make it into the circulatory system.
Another Brooks AFB responsibility that further incentivized the spreading of misinformation was to lead a lab on a classified microwave-bio weapons program. Competition between this effort and the microwave-bio research programs undoubtedly going on in other nations at the time would explain the Brooks group’s attempts to block and discredit unclassified research in the microwave area and the subsequent publication of the results: it did not want advances in knowledge to appear in the scientific literature where the USSR could benefit from it. This is not unlike the recent uproar over whether bird flu results should be published—or even done at all—because of the fear that they may help terrorists develop biological weapons.
Stalling funding
In addition to actively suppressing results of microwave-bio research, the Brooks group also attempted to block funding for such research in the first place—and largely succeeded. For example, after we and others published the first papers in the mid- to late-’70s showing that very low intensity microwaves could open the bbb, the Department of Defense (DOD) issued a report, written by a psychologist at a Kansas Veterans Administration hospital who was neither trained nor experienced in research on the bbb, that concluded “…if a real potential for catastrophic effects exists, it would be evident from the research already reported in the literature.” (An original draft of the report also noted that “DOD funding of research evaluating the effects of microwaves on the bbb should be of low priority,” though this statement was removed before the report was released to the public.)
Largely as a consequence of this report, funding for open microwave-bio research in the United States was essentially shut down. Several months after the report was released, I requested renewal of government funding, which in part supported research on the bbb. I received a letter stating that funding would not be granted unless I dropped the bbb part of the proposal. And in a September 1981 article in Microwave News, 2 years later, the editor wrote, “Surprisingly, no new [bbb] work was reported this year.”
Even now, the recent GAO report states, the National Institutes of Health (NIH) “is the only federal agency we interviewed that is directly funding ongoing studies on health effects of RF energy (microwave radiation) from mobile phone use.” And the NIH funded only one relevant completed experiment, by an in-house researcher, during the time the GAO did its assessment. For many years now most of the published microwave research—what little that has been done—has been conducted in other countries. And as I noted in a recent paper, many, if not most, of those have been epidemiological studies looking for health problems associated with outdated technologies that are not relevant to the phones used today or that will be used in the future.
Thus, the shutdown of normal open microwave research in the U.S. and the misinformation placed in the literature appears to be collateral damage of the actions of people who saw themselves as fighting a war. And since the research was not allowed to proceed in the normal fashion, we don’t have the set of data needed to determine if there is a health hazard of mobile phone use—and, if so, how serious the hazard is.  This suppression of research has now made hundreds of millions of people subjects in a grand experiment that may involve their health, without their informed consent, and the outcome of which can have substantial medical, legal, and economic consequences.
Allan H. Frey (allan@freys.us) is a semi-retired scientist in Potomac, Maryland, who was Technical Director of Randomline, Inc., a consulting and research firm. Read about more unsavory actions that I and others have observed in my chapter of bioethicist Nicholas Steneck’sRisk Benefit Analysis: The Microwave Case.

SOURCE:  http://the-scientist.com/2012/09/25/opinion-cell-phone-health-risk/

Saturday, June 26, 2010

Your Eyes and Cell Phone Damage

Many years ago, perhaps in the mid 90s, an attorney I know, and a HAM radio operator, was talking with me about EMF. He pointed out that for a very long time the FCC has had on its licensing exam a question regarding the fact that EMF (radio waves) are a known cause of cataract.

This article looks at the issue again and also points out the importance of keeping the cell phone as far away from you as possible.

This is the same concern in regard to cell phone effect on your thyroid gland and function.

Cell phones can damage eyes: Study
Prashant Rupera, TNN, Jun 23, 2010

VADODARA/ANAND: While scientists across the globe are still debating whether usage of cell phones results in heart diseases, a new study carried out by scientists at Charotar University of Science and Technology (CHARUSAT) has revealed that mobile phones also affect eyes.

The scientists, who have studied the impact of electromagnetic waves on human eye, say that usage of mobile can also lead to early cataract in lens apart from affecting retina, cornea and other ocular systems of the eye.

"We are in ocean of electromagnetic signals and hundreds of signals are hitting human body every moment. It is affecting all our body parts, but we are not realising it," says professor Ved Vyas Dwivedi, head of department of ECE at CHARUSAT, who along with dean of the faculty of engineering and technology Y P Kosta and lecturer Dhara Patel carried out the study based on a mathematical model.

"The wavelength of wireless signals (which is about 2 to 2.5 cm) used for mobile phones and other wireless terminals matches with that received by the human eye. The dielectric constant (absorption capacity) of eye tissues is around 70 which is greater than unity (above 50). This means that the eye can absorb electromagnetic energy very quickly," explains Dwivedi.

During the study, scientists computed the specific absorption rate (SAR) and maximum temperature increase in the eye because of electromagnetic radio frequency fields generated by wireless terminals such as a mobile phones. SAR and temperature rise depend on the distance between eye and radio frequency transceiver (the mobile phone) and the angle between the line of sight and shortest normal path.

"The problem is not that the eye absorbs the energy, but that the heat absorbed by the eye does not get transmitted or radiated out of the body," says Dwivedi, adding that prolonged usage of mobile phones can affect retina, sclera, lens, cornea as well as vitreous humour which are parts of the human eye.

These scientists have also recommended that a mobile handset should be kept as far as possible from the eye. "It should not be used more than is necessary. A user should avoid use of mobile in rural areas or a car where the cell phone uses more power and the SAR value can be ten or hundred times higher than the normal," they suggest. This group of scientists is also planning to approach the government in collaboration with a hospital to get license to conduct tests on human to further study mobiles affect on human eye.

prashant.rupera@timesgroup.com
THE TIMES OF INDIA

Wednesday, June 02, 2010

SSRIs Can Lead to Cataract

More problems with this class of drugs, perhaps its time to rethink the problem of " depression"  and look for nutritional regeneration.  Safe and effective natural herbal remedies or homeopathy can also be of great help.

Cataracts From Antidepressants? Study: 22,000 U.S. Cataract Cases May Be Due to SSRI Antidepressants

By Daniel J. DeNoon, WebMD Health News
March 12, 2010 -- SSRI and SNRI antidepressants raise the risk of cataracts by about 15% -- enough to cause 22,000 extra cataract cases in the U.S.  each year, Canadian researchers suggest.
The study does not prove that antidepressants cause cataracts. And even if the finding is confirmed, the risk to an individual taking antidepressants is small.
But these widely prescribed drugs may pose a vision risk in elderly patients, suggest Mahyar Etminan, PharmD, and colleagues of the University of British Columbia, Vancouver, Canada.
"This study showed for the first time that SSRI use may be associated with an increase in the risk of cataracts," Etminan and colleagues conclude.
The researchers analyzed data collected from 18,784 cataract patients and 187,840 comparison patients between 1995 and 2004. All of the patients had heart disease and had undergone treatment for blocked arteries. Their average age was 73.
Only patients currently using antidepressants -- not those who had taken them in the past and stopped -- were at increased risk of cataracts. Even so, only 8.5% of cataract patients in the study had taken SSRI antidepressants at any time.
Not all SSRI antidepressants were found to increase cataract risk, although this may be because not enough people in the study were taking them for the researchers to detect a risk. Risk was found for three different antidepressants:
  • Luvox raised cataract risk by 39%.
  • Effexor raised cataract risk by 33%.
  • Paxil raised cataract risk by 23%.
  • Overall, use of any SSRI antidepressant raised cataract risk by 15%.
Assuming that 10% of Americans take SSRIs, that the increased risk is 15%, and that 1.5% of cataracts in the U.S. are caused by antidepressants, the researchers calculate that SSRIs may cause 22,000 extra cases of cataracts each year.

How Antidepressants Might Cause Cataracts

How could antidepressants cause cataracts?
SSRI antidepressants work by increasing the amount of serotonin in the brain. (Effexor is not strictly an SSRI, as it boosts norepinephrine as well as serotonin. - NB from NHN: These are called SNRIs)
Etminan and colleagues note that the lens of the eye has serotonin receptors -- switches that activate cellular functions. Animal studies show that serotonin can make the lens of the eye more opaque and lead to cataracts.
If the Etminan findings are confirmed, SSRI antidepressants would not be the first drug to increase cataract risk. Oral and inhaled steroids and beta-blockers have also been linked to cataract formation.
The Etminan study appears in the March 7 online issue of Ophthalmology. Pfizer, the maker of Effexor, and Abbott, the maker of Luvox, were contacted for comment but were unable to reply in time for publication.