EMF Is Everywhere. Here’s What the Science Actually Says.
Separating the noise from the signal and what I actually recommend to my clients.
Komal Halai
Functional Nutritionist & Integrative Health Coach June 25, 2026
EMF comes up in almost every deep health conversation I have with clients. Someone has read something alarming, a friend told them to switch their router off at night or they have gone down a rabbit hole at 11pm and now they are not sure whether to throw their phone out the window. I get it. But I've also watched people make themselves miserable anxious, sleep deprived, socially isolated by obsessing over a risk that isn't yet well-defined. That's not health. That's a different kind of harm.
So here's my honest, evidence grounded take, the one I give my clients, not the one designed to sell them a 300 dollar gadget.
"The goal isn't zero exposure. That's neither possible nor necessary. The goal is informed, proportionate action."
Not all EMF is the same
This is where most conversations go wrong immediately. EMF (electromagnetic fields) is an enormous umbrella term that covers everything from the sun to your toaster. What matters is frequency and whether the radiation is ionising or non-ionising.
When your client or friend says they're worried about 'EMF,' they almost always mean non-ionising radiation, the kind emitted by phones, WIFI routers, smart meters and 5G towers. This is a genuinely different category of risk to the ionising radiation we know causes harm and conflating the two is how a lot of fear gets amplified unnecessarily.
| IONISING
High frequency
X-rays, gamma rays, UV radiation
Has enough energy to break chemical bonds and damage DNA. Risk is well-established at sufficient doses. |
INTERMEDIATE
Mid frequency
Some UV light, power lines (debated)
Research ongoing. Some associations with specific exposures at high levels, but causality unclear. |
NON-IONISING
Low frequency
WiFi, 5G, mobile phones, Bluetooth
Does not have enough energy to break DNA bonds. This is where most public concern and most debate sits. |
What the current evidence says
I'll be honest, the science here is genuinely unsettled and I think it's important to say that clearly rather than pretending confidence in either direction. The WHO classifies radiofrequency electromagnetic fields as 'possibly carcinogenic to humans' a category that also includes pickled vegetables and aloe vera extract. That classification reflects uncertainty, not established danger.
The most robust concern is around very heavy mobile phone use over long periods specifically the INTERPHONE and NTP rodent studies which flagged possible associations with certain brain tumours at high levels of exposure. These results are contested, the exposure levels studied were far above typical use and population level brain tumour rates have not risen in the decades since mobile phones became ubiquitous. That last point matters.
| 2B
WHO carcinogen classification for RF-EMF — same category as coffee and pickled vegetables |
30+
Years of mobile phone use studied with no clear rise in population brain tumour rates |
~2m
Distance at which EMF signal strength drops to roughly 1% of its strength at source |
Where I do have concerns
I also take seriously the emerging research on sleep disruption from device use though this is less about EMF specifically and more about blue light, notifications and the physiological arousal that comes from being permanently contactable. These effects are well-documented and in my clinical experience, are causing far more day-to-day harm than the radiation question.
And then there's electro hypersensitivity, a condition where people report real, distressing symptoms they attribute to EMF exposure. The evidence doesn't support a causal link between EMF and these symptoms, but the symptoms themselves are real. In my practice I've found that working on nervous system regulation, reducing overall sensory load and improving sleep resolves most of these presentations which tells me something about the underlying driver.
"The anxiety about EMF is sometimes doing more biological damage than the EMF itself. Cortisol is a real and measurable problem. The jury on WiFi is still out."
