By Brian Hoyer, FNTP · Founder of Shielded Healing
In Part 1 I laid out why the "non-ionizing means harmless" argument comes from two models colliding — modern physics focused on energy per photon, and how modern Western/allopathic medicine is primarily focused on diagnosing disease states. I promised a follow-up on how to actually navigate the science and the medical literature on this topic. This is that article 4 years later! (hey, I've been busy!)
I'm not asking anyone to take my word for any of this. I actually prefer you don't. I'm asking people to look at the actual research themselves, and to understand what they're looking at when they do. There's a lot of noise on this topic in both directions and a lot of people yelling and weirdly offended on a topic that I don't think is actually very controversial when understood the right way. The biggest problem with skepticism is not knowing how to read the studies and what they actually show and what questions they actually answer.
If you learned physics, you might remember learning that a photon either carries enough energy to knock an electron out of orbit or it doesn't. Below that threshold there is no ionization. That's true, it's well established, and there's nothing wrong with that understanding.
If you trained in medicine, you learned another extremely useful framework: look at the signs and symptoms of your patient, identify the pattern, make a diagnosis, and give the right treatment for the right disease. That is modern western medicine in a nutshell. Doctors are trained extensively on diagnostics and some might say that's primarily what they are taught to do for their occupation.
The same symptom can have many possible causes, so the symptoms become clues that help narrow down what is actually happening. That genuinely matters. You don't want to treat a heart attack like indigestion or a bacterial infection like an autoimmune disease. Getting the diagnosis right means getting the treatment right, and that framework has saved an enormous number of lives.
Put those two frameworks together and “non-ionizing radiation is harmless” isn't a foolish conclusion. It's a reasonable conclusion within those frameworks. The photons don't carry enough energy to ionize atoms, and if an exposure doesn't produce a recognizable set of symptoms right away that leads to a diagnosable disease, there may be nothing for medicine to diagnose or treat.
What's changed isn't that either framework was wrong. Physics is still right about ionization, and medicine still needs diagnoses in order to separate very different problems and give people the right treatment.
What's changed now is that we have decades of research describing biological effects that can occur in the space between, that those frameworks don't necessarily address—the space between “not enough energy to ionize an atom” and “a person has a diagnosable disease.”
That space matters because biology doesn't begin with a diagnosis. A diagnosis is usually the end of a much longer chain of events.
So before we go any further, there's one word that is the key to all understanding from here on out.
Think about this and just sit with it for a moment or two before moving on... what do we actually mean when we say something is harmless?
I covered this in Part 1, but it's worth restating because it's the single most important thing to understand before reading any EMF study.
What a study measures determines what it can find.
If a study is designed to look for a disease diagnosis after a short exposure period, it will very likely find nothing. Diseases usually take years to develop. So a six-week study hunting for tumors comes back clean, and that clean result gets reported as "no effect found."
But get this: the same exposure over the same six weeks may measurably change melatonin production, calcium signaling, oxidative stress markers, or sleep architecture. But because those changes aren't a diagnosis, the allopathic model may not treat them as meaningful at all. Many studies don't even measure these markers because they're looking for one specific outcome—often cancer. In the real world, we're not only concerned about whether everything causes cancer, yet that's what much of the research focuses on because cancer has historically been one of the major health endpoints used to evaluate ionizing-radiation risk. If we looked at different markers, we might find changes that help explain the difference between a person who feels good and one who doesn't.
So when you read a study, the first question isn't "what did they find?" It's "what were they looking for?"
Ask these before you read anything on this topic. They'll explain most of the apparent contradictions in the literature.
What was the endpoint? A disease diagnosis, or a biological marker? A study hunting for tumors and a study measuring oxidative stress can run identical exposures and reach opposite conclusions, and both can be honest.
What was the exposure level? At real world levels, or at regulatory limits? The most relevant research uses levels far below the limits. Sometimes higher exposures have shown less effect—a counterintuitive result, but non-linear biological response windows are a real phenomenon seen with both EMF and light.
Was it pulsed or continuous? Almost nobody checks this, and as you'll see below, it can flip the result entirely.
How long, and how often? Acute and continuous is a different biological question than chronic and intermittent. Your bedroom is chronic.
Is there a proposed mechanism? An association without a mechanism is interesting, requiring more study. An association with a real mechanism is a potential finding that I think is worth action.
In Part 1 I used blue light as the easiest proof that non-ionizing, non-thermal energy changes human biology. I want to go deeper here, because the underlying research is a perfect model of what a well-designed study looks like — and most people who cite blue light have never read it.
The study is Lockley, Brainard and Czeisler (2003), out of the Division of Sleep Medicine at Brigham and Women's Hospital and Harvard Medical School, published in the Journal of Clinical Endocrinology & Metabolism.
Here's why the design matters.
They exposed subjects to 6.5 hours of blue light at 460 nanometers — and compared it against 555 nanometers — green. They matched the two exposures for equal photon strength. Same number of photons reaching the eye. The only variable that changed was wavelength/color of light.
The result: 460 nm blue light produced roughly twice the melatonin suppression of green light, and a two-fold greater circadian phase delay — about 3 hours versus 1.5.
Sit with that for a second.
Same brightness. Same photon count. No ionization — visible light doesn't carry enough energy per photon to break a chemical bond. No heating — nobody's tissue warmed up. And yet one wavelength moved a master hormone twice as far as another.
The wavelength itself did that. Not intensity. Not heat. Not bond breakage. The specific character of the electromagnetic energy, interacting with a receptor system built to read it.
And notice what happens further along the spectrum. Amber, orange and red wavelengths barely move melatonin at all. Same electromagnetic spectrum, same non-ionizing category, wildly different biological response... and it's in line with nature and the way humans have interacted with sunlight and firelight throughout history. Blue light by day, sunset takes out the blue spectrum and firelight is void of any significant blue or green light at all...so melatonin functions the way it is supposed to.
I want to expand on something I touched on in Part 1, because it's the flip side of this conversation and it usually gets lost.
We talk a lot about what modern environments add. We don't talk enough about what they removed.
Light receptors live in your eyes and your skin. Both contain light-sensitive pathways that help regulate circadian rhythm, melatonin timing, hormone signaling, mitochondrial function, and nervous system state. They work like a master control system — the way a thermostat senses temperature to hold a room steady, these receptors sense the light environment to help hold the body in homeostasis. They read wavelength, type of light, and time of day, and that information tells the body which hormones to produce and when.
Outdoors, roughly 70% of the photons reaching you from the sun are infrared, with the rest visible light and a small amount of UV. No flicker. No strobing for the nervous system to process.
Indoors, LED and CFL bulbs deliver almost no infrared, and many flicker severely. We're left depleted in exactly the wavelengths every cell relies on for ATP production and cellular respiration, while the nervous system works around a strobing input it was never built to handle.
In Part 1 I mentioned that infrared wavelengths act as repair agents alongside the sun's UV. Search "infrared photobiomodulation" on PubMed and you'll find thousands of papers on how infrared wavelengths affect cellular energy production and tissue repair.
So modern lighting is two problems: wrong light at the wrong time, and missing light we're supposed to be getting. Both matter.
In Part 1 I said we've introduced a quintillion times more energy in pulsed frequencies than occurred naturally. People have asked me for the source.
Bandara & Carpenter (2018), writing in The Lancet Planetary Health, estimate that exposure around the 1 GHz band — the range most modern wireless communication uses — has risen from extremely low natural levels by approximately 10¹⁸ times.
That's a 1 with 18 zeros after it.
1,000,000,000,000,000,000
The same paper notes that exposure regulations in most countries still rest on ICNIRP and IEEE guidelines established in the 1990s, on the belief that only acute thermal effects are hazardous.
But I think that figure actually understates the actual change that has occurred on this planet.
That number describes intensity within roughly one frequency band!
One.
Natural background across the radio spectrum was essentially empty everywhere. We have since populated hundreds or even thousands of separate bands — cellular across multiple generations, Wi-Fi at 2.4 and 5 and 6 GHz, Bluetooth, smart meters, satellite, radar — each carrying its own modulation pattern and frequency.
So the quintillion figure captures how much louder one channel got. It doesn't capture how many channels we turned on.
The strongest objection to everything I've written is a good one: non-ionizing radiation doesn't carry enough energy per photon to break a covalent bond in DNA.
That's true.
Here's what the objection assumes: that there's only one road to DNA damage.
Ionizing radiation takes the direct road. It knocks electrons out of atomic orbits and can break covalent bonds in DNA outright. But it also takes an indirect road — it splits water molecules in the cell nucleus into hydroxyl free radicals, among the most destructive oxidants in biology, and those go on to damage DNA on their own.
Notice what that means. On the indirect road, the radiation never touches the DNA. It creates a chemical, and the chemical does the damage.
Non-ionizing radiation can't take the direct road. But there's a substantial body of mechanistic research describing how it takes this indirect road of its own:
One. EMF exposure activates voltage-gated calcium channels in cell membranes — Dr. Martin Pall's work, which I referenced in Part 1.
Two. Calcium floods into the cell.
Three. Excess intracellular calcium drives up nitric oxide production.
Four. Nitric oxide reacts with superoxide to form peroxynitrite, a potent oxidant.
Five. Peroxynitrite reacts with carbon dioxide to form nitrosoperoxycarbonate, which decomposes into carbonate radicals and nitrogen dioxide radicals.
Six. Those radicals damage DNA, cell membranes, proteins, and mitochondria.
Different starting point. Different chemistry. Overlapping endpoint.
That's what I want people to sit with. Nobody serious is claiming non-ionizing radiation snaps DNA bonds directly. The claim is that this type of energy initiates a biochemical cascade whose end products do the same category of damage that ionizing radiation's free radicals do.
If you accept that ionizing radiation harms you partly through free radicals it generates — and virtually everyone does — then the mechanism is already familiar. The only new information is that there's a second way to generate them.
Pall ML (2013). Electromagnetic Fields Act via Activation of Voltage-Gated Calcium Channels. Journal of Cellular and Molecular Medicine.
https://pubmed.ncbi.nlm.nih.gov/23802593/
Yakymenko I, et al. (2016). Oxidative Mechanisms of Biological Activity of Low-Intensity Radiofrequency Radiation.Electromagnetic Biology and Medicine.
https://pubmed.ncbi.nlm.nih.gov/26151230/
Panagopoulos DJ, et al. Human-made EMFs, ion forced-oscillation, voltage-gated ion channel dysfunction, oxidative stress and DNA damage.
https://pubmed.ncbi.nlm.nih.gov/34617575/
This doesn't prove your phone gave anyone a specific disease.
It shows that the "not enough energy to break a bond" objection answers a question nobody is really concerned about.
This is the most underappreciated issue in the entire literature, and it's why I keep saying pulsed rather than just EMF.
There are two kinds of electricity. Direct current flows one direction — batteries, your nervous system's synapses, the sodium-potassium pump in every one of your cells, and the earth's own static electric and magnetic fields. Alternating current reverses direction in regular pulses, 60 times per second in the United States.
Your body runs on DC. The environment it was built for supplied DC. We surrounded it with pulsed AC.
An example to illustrate why pulsing itself is the variable:
A 900 MHz field produced measurable changes in human EEG when pulse-modulated, while the same 900 MHz carrier delivered continuously for the same duration and at the same time-averaged exposure did not.
Same carrier frequency. Same time-averaged exposure. Same duration. Only the modulation changed — and the biological response changed with it.
Here's the study.
If that structure sounds familiar, it should. It's the identical design logic as the blue light study: hold everything constant, change one property of the electromagnetic energy, and watch biology respond. In one case the variable was wavelength. In the other, pulsation.
This is also why regulatory limits based on average power miss the point. Average power is exactly the thing these two studies held constant.
In Part 1 I mentioned the Frey Effect and the use of radiofrequency to open the blood-brain barrier for drug delivery. There's real research behind that.
Salford et al. (2003), in Environmental Health Perspectives, reported albumin leakage across the blood-brain barrier and neuronal damage in rats after GSM cell phone exposure.
Allan Frey, whose name is on the auditory effect, was publishing on blood-brain barrier permeability from low-level microwave exposure back in the 1970s. This line of inquiry is over fifty years old.
That barrier exists to keep toxins out of your brain. Whether you think a permeable one matters is up to you, but "it does nothing" isn't on the table.
This one deserves more attention than it gets, because almost all the popular conversation is about wireless and almost none of it is about magnetic fields.
Li & Héroux (2014) exposed five cancer cell lines to extremely low frequency magnetic fields in the range of 0.025 to 5 microtesla and reported changes in cell karyotypes, proposing interference with mitochondrial ATP synthase as the mechanism.
Convert those units. 0.025 to 5 microtesla is 0.25 to 50 milligauss. That is exactly the range our team measures in ordinary bedrooms, every single week. Not near a substation. Not in an industrial setting. In houses in rural, urban, and suburban neighborhoods.
And the proposed mechanism is mitochondrial. If you're in the functional health world, you already know why that matters...you mitochondriacs! :-)
The World Health Organization's International Agency for Research on Cancer has classified electromagnetic fields twice.
In 2002, IARC classified extremely low frequency magnetic fields as Group 2B — possibly carcinogenic to humans— based largely on consistent epidemiological associations with childhood leukemia. At that time they were in the same category as DDT (upgraded later to 2A) and lead and now it is also adjacent to chloroform and gasoline exhaust.
In 2011, IARC gave radiofrequency electromagnetic fields the same Group 2B classification.
Here's something that doesn't get emphasized enough, and it's the part that convinces me most.
If man-made electromagnetic fields can move biology in a negative direction, we'd expect natural electromagnetic conditions to move it in a positive one. That's exactly what the research shows.
Chevalier, Sinatra, Oschman and colleagues (2012) reviewed the earthing research in the Journal of Environmental and Public Health — direct contact with the earth's DC field, and its association with reduced inflammation, improved immune response, and autonomic nervous system function.
But the study I want everyone in this field to read is this one.
Passi et al. (2017), at Penn State Children's Hospital, published in Neonatology. They found that electric fields produced by NICU equipment induced a measurable electric potential on the skin of preterm infants relative to ground — and that an electrical connection to ground reduced that skin potential and improved vagal tone.
They measured the AC body voltage. Reduced the AC body voltage through grounding. Then observed improvement in autonomic nervous system function in these little babies that cannot fake an outcome or be told to relax. Placebo doesn't apply here. This was in a hospital and in a peer-reviewed clinical journal.
That is precisely what our team does in bedrooms, and precisely what I described in Part 1 when I said our team has measured 1,000 to 10,000 millivolts of pulsed AC on the body in beds across more than 1,500 homes. The mechanism isn't theoretical or only based on ancestral philosophies. It's been measured on the most vulnerable patients in medicine, and reducing it helped.
If a NICU has to manage this for a baby who's there a few weeks, what do we think thirty years of sleeping in an unmanaged bedroom is doing?
Wait...30 years?
Where did that come from?
8 hours a night. If you live until you are 90 years old, you will have spent 30 years asleep. Same bed. Same wiring in the walls. Same voltages and man made frequency exposures. 30 years either supporting healing or potentially sabotaging it.
Unless you do something about it.
People often ask me: if any of this were real, wouldn't the limits have been updated?
U.S. wireless exposure limits were set in 1996 — before most people owned a cell phone.
A colleague and friend of mine, Dafna Tachover, worked for the Children's Health Defense and was a lead lawyer in this lawsuit and part of their legal team. She explained all of this to us on a Shielded Healing team retreat years ago...
In 2019, presented with roughly 11,000 pages of evidence, the FCC decided to leave the guidelines unchanged.
In 2021, a federal appeals court reviewed that decision and ruled it "arbitrary and capricious" — the legal standard for an agency acting without adequate reasoning. The court found the FCC had failed to respond to record evidence regarding health effects below current limits, and ordered the agency to justify them, specifically addressing impacts on children, long-term exposure, and the ubiquity of wireless devices.
The court was careful to say it was taking no position on the underlying science. It ruled only that the agency's reasoning was legally insufficient.
As of this writing, the FCC has not responded, and the 1996 limits still stand.
A federal court told them to update the guidelines after being presented with evidence they ignored, and they still haven't as you are reading this.
I don't want anyone taking my summary on this topic as the final word. You might think I'm biased because I am in the EMF space helping people with solutions to the situation we find ourselves in with the modern technological world we live in.
I do make a living helping people with this and I love solving problems for people. I also love helping people. Before I did this I was serving in the non-profit world and organized community service projects for 40 charities every year in my local community.
I started Shielded Healing because I discovered a problem and not many people were providing adequate solutions to the level I saw could be done. I can devote much more of my time and resources to solving issues when I can make a living doing this work. Same goes for my team that I have trained.
All that to say you absolutely should check all the info and fact check everything yourself but I hope when you do that you do so with an open mind now that you have an understanding from a different perspective or paradigm than you were operating from before.
Two resources let you check all of this directly.
EMF-Portal, maintained by RWTH Aachen University in Germany, is a searchable scientific database indexing research on electric, magnetic and electromagnetic fields and their biological effects. You can filter by frequency, exposure, endpoint, and outcome.
The BioInitiative Report is a multi-author compilation of research on biological effects of ELF-EMF and radiofrequency radiation.
Go read the studies that disagree with me, too. Genuinely. As I said in Part 1, being skeptical isn't a crime — it's good. I actually love debate and if I say something inaccurate I'm the first to admit it when I realize it.
I believe everyone should be open skeptics, and that means reading in both directions and seeking the truth so you can change when you discover a new way of thinking about anything.
The question that currently dominates non-ionizing EMF research is:
Will this give me cancer?
I understand why. It's the question the disease model is built to ask. Causes of diseases are always the question. How do I avoid a cancer diagnosis at all costs? The treatments suck and make you sicker and there's a lot of politics and egos involved around what you should do when you get that diagnosis... from family members, friends, and even among doctors.
But the question about non-ionizing EMFs causing cancer is close to useless for the way people actually live. If they contribute to cancer in a big way or small way really doesn't matter in my view. I honestly think they probably do contribute to oxidative stress and suboptimal immune and organ function and deplete antioxidants required to battle cancer and inflammation. But that's over time that it can have a big impact...maybe 20, 30, 40 years down the road. That's not why people hire us to help them.
More practical questions: Will I wake up tomorrow with a headache or without one? Rested or depleted? Will my joints hurt? Will my immune system clear this virus in four days or four weeks? Does the oxidative stress I'm accumulating put a load on my thyroid? Could that load contribute even a small percentage to an autoimmune picture over a decade? Is it a possibility that it could also contribute to cancer?
Is it harmful to lose an hour of deep sleep every night? Yes. Obviously yes.
Can we measure precisely how harmful? Not really. And that's the honest limitation of using studies as a tool the way they are currently designed.
I love science and research. It points us down the right paths and it sharpens our understanding. But a study is one instrument for arriving at truth about the human body — not the only one, and not a complete one.
Clinical research and listening to doctors who are successful helping patients also matters. Understanding humanity in context of this planet and our relationship to our natural habitat matters. Humility matters. Measurements and mitigation numbers inform us. Every piece of information we get from successes from fellow humans can inform our data set and make us more accurate to what the truth of the subject actually is.
Here's the part that especially matters to me. If we move ten different needles in the right direction, and each one reduces some burden by two or three percent, that compounds. Now run it every night, for years, in the room where your body does its deepest repair. (Did I make the claim yet that sleep is the body's #1 biohack that it requires every night for recovery? I strongly believe that.)
The quality of recovery you experience each night shows up in the quality of your days — how you feel, how you recover, how you think. Over a long enough time, probably in the quantity of years you live too.
Here's what I'd ask you to sit with.
Every one of us is operating inside a paradigm, whether we've named it or not. The paradigm decides which questions we're allowed to ask, which evidence counts, and what we're willing to call harm.
In the disease paradigm, the question is: has enough damage accumulated to earn a diagnosis? If not, there's nothing to discuss. No diagnosis, no disease, no treatment, no problem. That paradigm has saved millions of lives and I'm grateful for it. But it only starts paying attention at the point where the body has already lost.
In the optimization paradigm, the question is different: is this input moving my biology toward normal function, or away from it? That question can be answered now. In your bedroom. With calibrated instruments. Before anything has gone wrong.
If you've read this far, you're probably not someone who dismisses things easily. You may have believed for years that non-ionizing radiation is harmless — and as I said at the start, that was a reasonable belief given how most of us were taught. I'm not asking you to feel foolish about it. I'd have concluded the same thing.
But I don't think the honest question is whether that belief was true. The honest question is what a person does once there are documented pathways — direct and indirect — by which this energy interacts with human biology. Once we understand that our definition of "harm" was only ever as good as our understanding of the mechanisms.
And I'd ask you to notice which paradigm you were standing in while you read this article.
If you were in the first one, most of what I've written probably registered as inconclusive. Correlations. Animal studies. Mechanisms without a body count. Fair enough — that's what the disease paradigm is built to see.
But if any part of you was standing in the second one, then a different question has been sitting there the whole time: what would my sleep, my recovery, my thinking, and my family's health look like if the room we spend a third of our lives in were built for human biology instead of by accident?
I can't answer that from here. But we can measure it in your home, and tell you exactly what we found.
Maybe it's time for a paradigm shift — not because someone finally proved a diagnosis, but because the people we love are sleeping in these rooms tonight, and we already know enough to do better.
Four years on from Part 1, Shielded Healing has grown into something I didn't fully anticipate.
We're a team of health practitioners, a firefighter, engineers, musicians, and philosophers — people who came at this from completely different directions and found the same problem waiting for them. That mix is the point.
The practitioners understand physiology. The engineers understand fields, wiring, and shielding materials.
The firefighter understands buildings and electrical systems the way only someone who's been inside failing ones can.
Musicians understand sound, vibration, resonance, and the subtle ways an environment can affect how a person feels and functions. They notice the things most people learn to tune out—the hum of equipment, electrical noise, and room acoustics.
And the philosophers keep asking the question underneath all of it: what environment is a human being actually supposed to live in?
Together we've built protocols that reduce measurable exposures and bring home environments closer to the conditions humans have always lived in — without pulsed AC electricity in the walls, without wireless saturating the room, and with artificial light tuned to more closely match sunlight so it works with circadian rhythm instead of against it.
Here's how the work goes.
We measure the whole home with calibrated professional instruments, prioritizing bedrooms and other high-duration spaces. We measure what's actually reaching the body — body voltage and body amperage — not just what a meter reads from across the room. Wireless is measured two ways: in the air, and with the body acting as the antenna.
Then we prioritize. Not every reading deserves the same attention. We use three factors — Downtime, Distance, Duration — to identify what matters most, what can wait, and what will create the biggest return for sleep and recovery.
Then we correct with physics, not gimmicks. Wiring corrections, shielding, grounding, proper dirty electricity filtration, lighting changes, hardwired internet strategies, device relocation, bedroom optimization. No stickers. No pendants. No harmonizers. If it can't move a meter, we don't recommend it.
Then we verify. Every assessment includes a follow-up to retest what was installed and fine-tune it. The goal isn't guesswork — it's before-and-after clarity.
We've recently restructured our services into three tiers, built directly from customer feedback about wanting the highest quality work at a range of budgets:
The Essential EMF Home Test — a foundational whole-home screening for people who want professional clarity and enough guidance to start making changes themselves, with implementation guides for lighting, home office, and bedroom electronics.
The Root Cause Analysis — deeper diagnostics and the implementation homework done for you. Bulb by bulb, device by device, circuit by circuit, with a contractor-ready plan your electrician can follow.
The Same-Day EMF Makeover — our highest-touch service. Products planned and shipped ahead, solutions installed onsite, contractors coordinated in person, and before-and-after readings before we leave.
We also consult on new construction and remodels, which is where the highest leverage is by a wide margin. Getting wiring, lighting, and shielding right before the floors go in costs a fraction of correcting it afterward.
These tiers are new and still being refined. If you're curious which fits your situation, reach out and we'll talk it through. Email us at info@shieldedhealing.com.
Brian Hoyer is a Certified Functional Nutritional Therapy Practitioner through the Nutritional Therapy Association and the founder of Shielded Healing, which has tested more than 1,500 homes since 2017 and works with clinics, physicians, athletes, hotels, hospitals, schools, and families looking for answers.
Shielded Healing provides environmental assessment and remediation. We do not diagnose, treat, or cure medical conditions, and nothing here replaces care from your practitioner.
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Sunlight damages DNA without ionizing anything. Brian Hoyer, FNTP, on why the non-ionizing safety argument was never sufficient — and what EMF research reports.
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