There's more troubling news linking cellphones with cancer. Researchers at Tel Aviv University found indicators of a major risk for cancer in the saliva of people who were heavy users of cellphones.
Since cellphones are placed close to the salivary glands when in use, the scientists decided to examine the saliva of cellphone users to look for clues in the relationship between cellphones and cancer. They examined men who used their cellphones for at least eight hours a month, although most cellphone users speak for much longer, as much as 30 to 40 hours a month, according to researcher Dr. Yaniv Hamzany of Tel Aviv University's Sackler Faculty of Medicine. Their saliva was compared to people who didn't use cellphones at all, or only used them to send text messages.
The scientists discovered that the saliva of those who were heavy users showed high amounts of oxidative stress. Oxidative stress produces free radicals which damage all parts of cells including DNA, and is an important risk factor for cancer.
"This suggests that there is considerable oxidative stress on the tissue and glands which are close to the cellphone when in use," Dr. Hamzany says. "The damage caused by oxidative stress is linked to cellular and genetic mutations which cause the development of tumors."
Although the study didn't prove that cellphones cause cancer, the researchers say it adds to an increasing body of evidence that indicates they may be harmful. Many previous studies have found disturbing links between cellphones and diseases, especially cancer and neurological problems.
• A study by the Israeli Weitzmann Institute of Science found cellphones increased the risk of tumors in the salivary glands by 50 percent. The risk was even higher if the caller always used the same ear, didn’t use a hands-free gadget, or used the phone while in a rural area where reception was poor. The researchers found that a call lasting just 10 minutes can trigger changes in brain cells that are associated with cancer.
• A Swedish study found that those who used mobile phones for 10 years quadrupled their risk of ear tumors. One study conducted by twelve 12 European research groups found that radio waves from cellphones harm cells and damage DNA. Researchers at the University of Washington discovered that two hours of exposure to the levels of radiation emitted by cell phones splintered the DNA of brain cells in rats, making them appear similar to cells found in cancerous tumors.
• University of Toronto researchers found that an increased risk of auto accidents persisted up to 15 minutes after a call was completed – the equivalent, said one investigator, of driving dead drunk.
• A Russian study found that children who used cellphones had poorer memories than those children who didn’t, and a British study found that children who used cellphones risked memory loss, sleeping disorders, and headaches.
In addition, an animal study by researchers at Yale University linked the radiation from cellphones to changes in brain development that could cause hyperactivity. "We have shown that behavioral problems in mice that resemble ADHD are caused by cellphone exposure in the womb," said senior researcher Dr. Hugh S. Taylor, a reproductive specialist. "The rise in behavioral disorders in human children may be in part due to fetal cellular telephone irradiation exposure."
• Research in seven countries found that young men who are heavy users of cellphones drastically lower their sperm count. "All the research shows the same thing," award-winning scientist Devra Davis told the Daily Mail. "If you take young men who are trying to become fathers, those who use mobile phones at least four hours a day have about half the sperm count of others. Sperm exposed to mobile phone radiation in the lab is sicker, thinner, and less capable of swimming."
The FDA says that while there’s no convincing evidence that cellphones are dangerous, there’s no proof they’re completely safe, either. A 2006 report from the World Health Organization found no adverse effects from cellphones, but also noted that other studies indicated an increase in tumors.
However, after reviewing dozens of cellphone studies, the International Agency for Research on Cancer issued a statement in 2011 that said cell phones may cause cancer in humans and currently classify them as carcinogenic category 2B — potentially carcinogenic to humans. They based their findings on studies that found using a cellphone for 10 years doubles the risk of developing a glioma, the same type of cancerous tumor that killed Ted Kennedy.
Neurosurgeon Dr. Russell Blaylock, editor of The Blaylock Wellness Report, doesn't believe that cellphones are harmless. "There is considerable evidence that cell phones damage the brain as well as other tissues and organs," he told Newsmax Health. "Many studies have shown that the microwave radiation from cellphones damages tissues and especially DNA.
"It would be ludicrous to say that cellphone radiation has no effect," Dr. Blaylock said. "That’s nonsense."
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