1. A truly low EMF infrared sauna is so important.  The high electric and magnetic fields of other company’s infrared saunas make them less effective by increasing the harm being caused by your present toxic burden, and reducing your body’s antioxidant resources.
2. There are 3 kinds of EMF and they all affect health by flooding brain and heart cells with calcium ions.
3. Those calcium ions cause dysfunction in the brain by altering release of neurotransmitters and hormones.  That dysfunction can manifest as sleep disturbances, headaches, depression, anxiety, fatigue, difficulty concentrating, memory changes, and numbness/tingling.
4. Excess calcium ions in heart and brain cells also cause dysfunction by producing oxidative damage.  That oxidative stress worsens the harm being caused by your current toxic burden, reduces your body’s ability to excrete toxins, promotes cellular aging, and damages DNA.
5. Studies have shown EMFs have biological effects on cells at magnetic fields as low as 2 – 3 mG, and electric fields below 300 V/m.  While inside a typical sauna, one without our patented EMF mitigation, you may be exposed to levels as high as 150mG and 2000 – 3000 V/m.
6. High Tech Health makes one of the only truly low EMF infrared saunas on the market: low in BOTH magnetic and electric fields.

For years, skeptics argued that EMF from electronics couldn’t possibly affect our biology. Their reasoning: EMF is “non-ionizing,” meaning it doesn’t have enough energy to directly break molecular bonds the way X-rays or gamma rays can. If it can’t break bonds, how could it cause harm?

We now have the answer. Numerous studies have proven that low-frequency EMFs do cause direct biological effects on cells – and researchers have identified exactly how it happens (1,6-9,15,16).

Here’s the mechanism: When cells are exposed to EMF, they show an almost immediate increase in calcium inside the cell (6,8). Calcium isn’t just floating around randomly – it’s a critical signaling molecule that tells your cells what to do. When calcium levels spike unexpectedly, cells start behaving abnormally.

The proof is compelling. When researchers treat cells with calcium channel blockers (medications like verapamil that prevent calcium from entering cells), the effects of EMF exposure are blocked (6,9). Multiple studies have confirmed this relationship between EMF and calcium signaling.

The likely explanation: EMFs are directly activating structures called voltage-gated calcium channels (VGCCs) in our cell membranes. These channels are essentially gates that control calcium flow into cells. EMF appears to force these gates open, flooding cells with calcium they didn’t ask for.

This is why a truly low-EMF infrared sauna matters – and why “low EMF” claims deserve scrutiny.

Not all cells are equally vulnerable to EMF. Voltage-gated calcium channels (VGCCs) – those gates that EMF forces open – are concentrated in specific tissues: your neurons (brain and nerve cells), neuroendocrine cells (the cells that release hormones), and muscle cells, including the smooth muscle in your blood vessels and the cardiac muscle in your heart.

This matters because it predicts exactly where EMF causes the most harm. And that’s precisely what researchers found. In mice exposed to EMF, the greatest tissue changes appeared in the central nervous system, the heart, and the testes – matching the distribution of these calcium channels (10).

Why your brain is particularly affected

In neurons and hormone-releasing cells, calcium isn’t just present – it’s the trigger. When calcium levels rise inside these cells, that’s the signal to release neurotransmitters (brain chemicals like serotonin and dopamine) or hormones. It’s how your nervous system communicates.

When EMF forces calcium channels open inappropriately, this communication system goes haywire. Here’s what happens:

1. First, there’s a surge – an excessive release of neurotransmitters as cells respond to the calcium flood
2. Then, cells try to protect themselves by downregulating (reducing) their receptors and synapses
3. The result: disordered neural signaling and reduced communication between cells

The physical evidence is striking. Tissues from rats exposed to high EMF levels showed nerve cells that were smaller than normal, with particular damage to the synapses – the connections between neurons where communication happens (10).

The excess calcium triggered by EMF doesn’t just disrupt signaling – it sets off a damaging chain reaction inside your cells.

Here’s how it unfolds: When calcium levels spike, it activates enzymes and molecular pathways that increase production of nitric oxide. Nitric oxide then combines with another molecule called superoxide to form something called peroxynitrite (6,7,10-12).

This is where things go wrong. Peroxynitrite is a free radical – an unstable molecule that damages other molecules by stealing their electrons. Worse, it triggers the formation of additional free radicals, creating a cascade effect. The result is oxidative stress: essentially, your cells are being chemically attacked from the inside.

What oxidative stress actually destroys

Oxidative stress isn’t abstract – it causes measurable physical damage:

• Cell membranes – the protective barrier around each cell
• Proteins – the molecular machines that do the work inside cells
• DNA – your genetic code itself, through strand breakage

This accumulation of damage – broken proteins, compromised membranes, fractured DNA – is one of the primary drivers of cell aging. It’s not just theory: oxidative damage is directly implicated in the development of atherosclerosis (hardening of the arteries), neurodegenerative diseases like Alzheimer’s and Parkinson’s, and cancer.

When you’re investing in an infrared sauna to improve your health, the last thing you want is a product causing this kind of cellular damage while you sit in it.

Read that again. A typical infrared sauna with carbon-based heaters exposes you to magnetic fields 50–75 times higher than the level shown to disrupt basic cell function, and electric fields 7–10 times higher than the level shown to cause oxidative stress in animal studies.

This isn’t a small margin of error. It’s an order of magnitude.

Nearly all other infrared saunas have extremely high electric fields, extremely high magnetic fields, or both, due to their design of heaters and wiring.  Most sauna companies use carbon-based heaters.  These are very inefficient, so they use more power than necessary, and they must cover the majority of the interior walls in order to sufficiently heat the sauna. That need for higher power, the large area they cover, combined with your proximity to them while in the sauna, result in extremely high EMF exposure.  Since EMF can act to make carcinogens more carcinogenic (see above), it is reasonable to conclude that typical infrared saunas have the potential to worsen the impact of a person’s existing toxic burden, as well as work against such a sauna’s ability to support the body’s detoxification pathways.  However, High Tech Health saunas feature a comprehensive mitigation of EMF in the wiring and patented triple antifield infrared heaters. They are the only heaters that block all types of EMF, so that while in our saunas you are exposed to virtually no added EMF, with EMF levels not significantly higher (typically lower) than ambient levels in the home.  We have had a third-party EMF engineering company confirm this by finding and measuring the maximum EMF levels found at the surface of our heaters.  We guarantee a truly low EMF infrared sauna.  Click here to see their report.

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