Electromagnetic Radiation: Are EMFs Really a Risk?
Is electromagnetic radiation really safe? Chances are you’re probably sitting in an electromagnetic field (EMF) at this very moment. The National Institute of Environmental Health Sciences describes EMFs as invisible areas of energy, often referred to as radiation, that are associated with the use of electrical power and various forms of natural and man-made lighting.
Electromagnetic radiation may surround us in modern everyday life, but what it? And is it actually safe? While some forms of electromagnetic radiation are known to be harmful, other forms are more controversial. We’ll discuss the different types and the science surrounding safety below.
A basic point to remember is that EMFs come from all sorts of things, including your microwave, , cordless telephones, smart meters, TV and radio broadcasts, computers, power lines, fitness tracking devices, routers, and, of course, ultraviolet waves, x-rays, and gamma rays. We are practically bathed in EMFs at all times. ()
This category of electromagnetic radiation includes low- to mid-frequency radiation, which is generally perceived as harmless due to its lack of potency.
Forms of non-ionizing radiation include:
Extremely Low Frequency (ELF)
Source examples include:
House energy smart meters
Wireless (Wi-Fi) networks
This type of electromagnetic radiation includes mid- to high-frequency radiation which can, under certain circumstances, lead to cellular and or DNA damage with prolonged exposure.
Forms of ionizing radiation include:
Sources of ionizing electromagnetic radiation include:
The time-varying electromagnetic fields produced by electrical appliances are an example of extremely low frequency (ELF) fields, which generally have frequencies up to 300 Hz; our electricity power supply and all appliances using electricity are the main sources of ELF fields.
The frequencies of intermediate frequency (IF) fields range from 300 Hz to 10 MHz; computer screens, anti-theft devices and security systems are the main sources of IF fields.
Radio frequency (RF) fields include frequencies frequencies of 10 MHz to 300 GHz; radio, television, radar and cellular telephone antennas, and microwave ovens are the main sources of RF fields.
Mobile telephones, television and radio transmitters and radar produce RF fields, according to the World Health Organization (WHO). These fields are used to transmit information over long distances and form the basis of telecommunications as well as radio and television broadcasting all over the world.
Microwaves are RF fields at high frequencies in the GHz range. In microwaves ovens, we use them to quickly heat food.
The electromagnetic spectrum encompasses both natural and human-made sources of electromagnetic fields.
Ionizing radiation such as X-ray and gamma-rays consists of photons which carry sufficient energy to break molecular bonds. Photons of electromagnetic waves at power and radio frequencies have much lower energy that do not have this ability.
Courtesy of http://www.cancer.gov/about-cancer/causes-prevention/risk/radiation/electromagnetic-fields-fact-sheet
Now that you have a little knowledge of what EMFs are, let’s establish some awareness about some specific dangers that may be around you. low frequency and high frequency electromagnetic waves affect the human body in different ways.
Have you ever noticed your cell phone getting really hot when you are driving your car? When your phone is in high use, including when you’re using a GPS location finder or talking while your car is moving, your phone is doing a lot of working to keep up. The harder it has to work, the more cell-damaging microwaves it is putting out into the atmosphere, right near your body.
If you think this doesn’t affect you, think again. Researchers conducted two separate studies, one on a 38-year-old vegetarian woman and another focusing on a healthy 21-year-old woman. Both carried cell phones in their bras for a number of years. What do you think happened? You guessed it; an aggressive developed in the exact spot where the cell phone was carried. Now, I think it is fair to point out that the Susan B. Komen website lists cell phones as one of the factors that DO NOT cause breast cancer. But, since we do not have enough research at this point, carrying cell phones on the body is probably not the best choice. (, )
What about the microwaves and how it affects the food that is being cooked? Harvard Health Publications noted that the best way to preserve nutrients is by using a cooking method that is shorter. So basically, the less amount of time needed to cook a food, the more nutrients it will retain. This claim states that microwaved cooked food is fine, though more research is needed. (, , ) I personally don’t opt for microwaved food.
What about Wi-Fi? A relatively newer technology, some organizations deem it safe while others say it’s posing a public health threat. Technically, Wi-Fi works in the range of 2.4 GHz frequency, the same as a microwave oven. So as noted above, it may require a lot of exposure to yield negative results.
On the flip side, Environmental Health Trust warns of the dangers of electromagnetic radiation, saying it contributes to a person’s toxic body burden. The organization points to research showing that that the protective barrier of the brain — the blood-brain barrier — is compromised due to wireless electromagnetic radiation. Several studies suggest wireless radiation pokes holes in this protective barrier, causing more toxic toxic compounds to reach the brain. ()
Doctors and organizations have also voiced concerns over Wi-Fi technologies in schools, where students and teachers often experience heavy electromagnetic radiation exposure throughout the entire day. Stephen Sinatra, MD, an integrative metabolic cardiologist and co-founder of Doctors for Safer Schools, says the heart is sensitive too and can be adversely affected by the same frequency used for Wi-Fi (2.4 GHz) at levels a fraction of federal guidelines (less than 1 percent) and at levels that have been recorded in schools with Wi-Fi technology.
Dr. Sinatra says children in high-tech classrooms have complained of the following symptoms:
racing heart or irregular heartbeat
When it comes to power lines, the American Cancer Society states that the levels of electromagnetic radiation greatly lowers as you move further away from the lines. The strength of the lines are highest when you are underneath them, but usually it’s the same frequency as some appliances in your home. If a power line is positioned across home and you are concerned, you can measure its strength using a gaussmeter. If you are not happy with what you find, you can move or ask the power company to bury the lines, though underground lines may not make a difference.
Preliminary results of a large, $25 million government study released in 2016 found that cell phone radiation could increase the risk of malignant in the brain and schwannomas of the ear. (Schwannomas are rare tumors that in nerve sheath.) The study found a dose-response effect. That means the higher the dose, the higher the risk. The results backed up previous research suggesting cell phone radiation could increase the risk of gliomas. Acoustic neuromas have also been linked to cell phone use. ()
Otis W. Brawley, MD, chief medical officer of the American Cancer Society, called the results of this rat study “good science” and released this statement:
The NTP report linking radiofrequency radiation (RFR) to two types of cancer marks a paradigm shift in our understanding of radiation and cancer risk. The findings are unexpected; we wouldn’t reasonably expect non-ionizing radiation to cause these tumors. This is a striking example of why serious study is so important in evaluating cancer risk. It’s interesting to note that early studies on the link between lung cancer and smoking had similar resistance, since theoretical arguments at the time suggested that there could not be a link. ()
In 2011, the World Health Organization listed cell phone radiation as a 2B carcinogen, meaning it’s possibly carcinogenic to humans. Since cell phones have only been in wide use since the 1990s, epidemiological studies looking for long-term risks from cell phone exposure could be missing certain threats that may not be surfacing in humans yet. ()
The Environmental Working Group conducted studies using focus group with cell phones attached to their heads. The studies varied the stimulus with periods of time when cell phones were off as well as turned on. Though the study has not provided enough information to confirm major issues, it concluded that brain glucose increased when the phones were on for a period of time. This could cause in the brain, leading to illness. ()