Cut Wireless/Wi-Fi/Bluetooth/EMF Exposure

Boost Sleep, Mood & Brain Health

by Mike Cohen, Director Center for Brain Training

I’m a brain guy. For more than 25 years I’ve dedicated myself to helping people get their brain to work better while avoiding things that contribute to brain problems. 

In recent years I became aware that EMFs (electromagnetic frequencies), produced by modern technologies such as Wi-Fi, Bluetooth, microwaves and more, mess with your brain (though some people are more sensitive to it than others). Deep diving into the research resulted in learning about some simple steps that I began advising my clients to take who wanted to reduce their exposure.   

It worked. Many of them reported improvements in sleep, anxiety, mood and other conditions in both themselves and their children. They had no idea EMF was affecting them until after they reduced their exposure. 

Why don’t you hear more about the dangers of EMF?
Because it’s not in the interest of companies selling or using wireless (trillions of $) to share possible side effects.

Health concerns

There’s growing evidence that overexposure to EMFs can have adverse health effects. Among those effects in susceptible people are:

• Sleep disturbances, including insomnia
• Headaches and dizziness
• Fatigue and tiredness
• Concentration difficulties
• Changes in memory
• Reduced attention span
• Mood issues
• Brain inflammation

What are EMFs? 
EMFs are invisible types of energy,  often referred to as radiation, associated with the use of electrical power and various forms of natural and man-made lighting. They emanate from many sources, among them power lines, home appliances, cell phones, cordless phones, Bluetooth  devices, fluorescent lights, smart TVs, smart meters, and Wi-Fi networks. 


So, how do you minimize your exposure?

Nighttime Recommendations

  1. Turn off your wireless router when you sleep.  Set it on a nightly timer to turn off automatically or move it farther away. (Your router is the box, usually provided by your telecom carrier, that brings internet into the house).
  2.  If you can’t turn off your router, situate it (and any boosters) at least 40 feet away from sleeping areas. (Wi-Fi is typically not blocked by walls or flooring, so you can’t consider them barriers).  30 feet+ away from nighttime sitting or working areas is a plus.
  3. During sleep, DISTANCE your phones and Bluetooth earbuds and devices by at least 8-10 feet.
    • Also, turn off other wireless devices (tablets, computers, TVs, etc.)
    • Extra safety hint:  Turn off phone Wi-Fi and Bluetooth in Settings at bedtime. Then click airplane mode, or better yet, turn your devices OFF while you sleep. (Believe it or not, some phones even in “airplane mode” can emit EMFs.)

The Electromagnetic Spectrum


Extra Protection Day or Night

(For those who want to know more)

  1. Ideally, turn off all wireless devices (tablets, computers, TVs) when not in use. 
  2. NEVER place your phone against your ear.
  3. Do not use wireless earbuds. (Use the speakerphone, wired headphones or air tube headphones. (Air tube headphones are designed specifically to shield EMFs). 
  4. DISTANCE MATTERS.  Keep your Wi-Fi router 20-30 feet away from those spaces you most frequently occupy (work, study, cook, etc.).  
  5. Whenever possible, use hardwired internet connections using ethernet cables and USB connectors. “Hardwiring” is reliable, fast (often faster than Wi-Fi), and secure. There are movable wire connections you can use for portable devices like tablets.

What I’ve done about my own EMF exposure
Before I entered the neurofeedback field I worked in the high-tech industry. No surprise, then, that I was one of the first people I knew to go all-wireless at home and at work. In recent years, however, that’s all changed. After reading a lot of published research on the possible negative effects of EMF exposure and becoming concerned about what it could potentially do to the brain, I now work and live in completely wired environments again.

Great article How to Set Up Wired Internet at Your Home – A Simple Guide (

Measuring EMF

There’s no way to know if you have an EMF problem unless you accurately measure, and because circumstances are always changing, it makes sense to test your environment every couple of months. You can find out by using an EMF/wireless/magnetic/electrical detector.

There are many such devices at various price points, but like most things, cheap isn’t better. I like the Safe and Sound Pro II RF Meter. It’s accurate, fast, clear, and easy to read and understand.

Safe and Sound’s EM3 EMF Meter is a more thorough (and more expensive) meter from the same company.

If you prefer not to do the metering yourself, you can hire an expert to do it for you.

In the South Florida area, I particularly like Axis Environmental Solutions (ask for Eric). He’s knowledgeable and reasonably priced.

You can find an expert by going to the website of the Building Biology Institute. Look for a tiny tab at the top of their page called “Find an Expert.” You can also do an internet search using a term like “EMF Inspections Homes Healthy Building”  Make sure any company or individual you find is experienced. Ask what types of EMF they measure (RF or microwave, magnetic fields, electrical fields, dirty electricity).  Ask if they can do remote support if you are at a distance. 

Whoever you hire, make sure they are experienced. Ask how long they have been in business, what types of EMF they measure (RF or microwave, magnetic fields, electrical fields, dirty electricity) and if they can do remote support if you are at a distance.

Online Resources


Research papers

Other Key Scientific Issues – International Commission on the Biological Effects of Electromagnetic Fields (  Takuma Ishizuka is an engineer in Hakodate, Hokkaido, Japan who began researching the perils of EMFs after he was plagued by a constellation of symptoms around 2017 that defied diagnoses or cures by medical doctors. He eventually concluded that EMF exposure was at the root of many of his issues. Takuma’s website contains an impressive collection of links to studies that he turned up. The second page of the section called “Numerous Studies Show EMF Health Effects” covers the health effects of EMFs on the brain.