According to this very informative article from Powerwatch published in 2010 DECT Cordless phones which transmit a pulsed signal have been shown to impact heart rate in new research published in the European Journal of Oncology .
The double-blind, peer reviewed provocation study of 25 people validates the condition complained of by increasing numbers of people across the globe today called 'electrosensitivity' (ES or EHS), demonstrating immediate effects on heart rate, almost doubling the heart rate in some cases. The study was led by Prof. Magda Havas of Trent University, Canada.
"What we found is what many people have said for a long time about devices that emit microwaves," stated Dr. Havas. "People don't just feel ill, their heart begins to race and this is measurable with medical heart monitoring devices."
Havas' new study adds to the growing interest in the health effects of mobile phones and WiFi which also transmit microwave radiation. The effects on heart-rate have also been demonstrated using a WiFi router/Access Point. This broadens the focus beyond mobile phones' association with brain tumors to their potential effect on other systems, including the heart. It also raises serious concern about risks of exposing schoolchildren to Wi-Fi networks, providing a possible explanation for why some children in schools with Wi-Fi are being diagnosed with, and medicated for, heart irregularities that they believe may linked to Wi-Fi.
Havas' study in the European Journal of Oncology on heart rate variability was blinded, which means that the volunteers did not know when the phone was on or off. Forty percent (40%) of subjects had a moderate to severe reaction only when the phone's base station was on, and emitting microwaves. Those who responded experienced arrhythmia (irregular beats of the heart) and/or tachycardia (rapid heart rate). The symptoms were often accompanied by feelings of pain or pressure in the chest and anxiety that would appear and disappeared for no apparent reason.
This is the first study documenting immediate and dramatic changes in heart rate associated with microwave radiation exposure at levels of exposure well below (0.5%) federal guidelines in Canada and the United States (1000 microW/cm2, 10mW/m2). It points to the extraordinary inadequacy of current exposure guidelines to protect the public's health.
Not Just DECT Cordless but Phones and WiFi Too
Havas states, "While not everyone who is electrically sensitive responds in this manner, those who do will have difficulty being in environments where microwave radiation is present, which is virtually everywhere in our modern, wireless culture." She adds, "Cordless phones and cell phones as well as wireless computers and wi-fi networks generate this form of microwave radiation."
Additional common symptoms of EHS include headaches, fatigue, difficulty concentrating, poor short-term memory, difficulty sleeping, skin problems, tinnitus, nausea, and dizziness. Many of these symptoms are subjective and difficult to measure.
Havas' study heralds the ability of health practitioners to determine if cardiac irregularities might be triggered by electromagnetic radiation, using readily available assessment technology, before resorting to invasive or chemical symptom-suppressing cardiac therapeutics.
Dr. Havas is a world-renowned expert in electromagnetic fields. Her teaching and research is concerned with the biological effects of electromagnetic pollution including radio frequency radiation, electric and magnetic fields, dirty electricity and ground current. She is author of the BRAG Antenna Ranking of Schools Report, which teaches schools how radiation exposure from neighborhood cell phone towers and antennas can be assessed and remediated, Zory's Archives, an ongoing review of thousands of recently released studies on the biological effects of electromagnetic fields, dating back over a half century, drawn from U.S. government and military, and Russian and Eastern European, sources, and co-author of 'Public Health SOS: The Shadow Side of the Wireless Revolution'.
Children are growing up in a sea of radio-frequency radiation that has never existed in human history. In America today, about twenty million children under the age of fourteen have cellphones. Increasingly, scientists and policy makers in tech-savvy nations like Israel and Finland are concerned that the ways these devices are used imperil the brain.
The iPhone plastic baby rattle case protects the phone’s glass screen from cracking when chomped on by teething babies, but does not protect the infant’s young brain from the phone’s pulsed digital microwave radiation.
This proliferation of wireless gadgets overlooks a critical health issue for pregnant women, men who wish to father healthy children, and children themselves: non-ionizing or microwave radiation damages the brain and sperm of experimental animals.
A cellphone is a two-way microwave radio with intermittent and destabilizing pulses, unlike microwave ovens that steadily operate at the same frequencies. The weak and erratic microwave radiation from cellphones and tablets cannot directly break the bonds that hold molecules together, but does disrupt DNA, weakens the brain’s protective barrier, and releases highly reactive and damaging free radicals. A five-year-old’s brain, healthy or otherwise, is encased in a thinner skull and contains more fluid than an adult brain. The bone marrow of a child’s head absorbs 10 times more radiation than an adult, while those of infants and toddlers will absorb even more.
Experimental work completed by teams working with two distinguished experts in male reproductive health, Professor Ashok Agarwal of the Cleveland Clinic and Sir Robert John Aitken of Australia’s Newcastle University, have shown that cellphone radiation-exposed human sperm die three times faster, swim significantly more poorly, become more deformed, and develop significantly more damage to their DNA.
How to Minimise Risks from Radiation
- Using a headset or speakerphone instead of holding cellphone to one's ear during calls and minimising their use as much as possible helps reduce the damaging effect.
- It is better to carry cellphone in a separate bag/handbag rather than one's pocket.
- Use wired connections for computers and laptops and switch off internet connection/router when not in use, especially at night .
- Its a good idea not to let children play with cellphones and ipads
- Eating healthy, quality sleep and some daily exercise go a long way towards combatting the negative effects of wifi and radiation.