Helpful vs Harmful EMFs
Electromagnetic spectrum
Electromagnetic fields (EMFs) are present everywhere in nature. Light is the most familiar example, although most electromagnetic fields are invisible to the human eye.
The electromagnetic spectrum ranges from static electric and magnetic fields, through radio frequencies and infrared radiation, all the way to X-rays and gamma rays. These fields include sunlight, electricity, Earth’s natural magnetism, and many small energy sources generated by living organisms, including the human body.
It is important to understand the difference between electromagnetic fields used for beneficial purposes and harmful electromagnetic radiation that may pose risks at high intensity or high frequency.
Harmful EMFs
Certain forms of electromagnetic radiation can be harmful, especially at high doses. Examples include ultraviolet radiation, gamma rays, and X-rays.
Human-made electromagnetic fields are also common in modern environments. They may be produced by electrical wiring, power lines, electronic devices, kitchen appliances, computers, wireless equipment, and telecommunications systems.
In general, higher frequencies and stronger intensities are more likely to pose potential risks.
EMF tests performed on Ereada mats in registered Korean laboratories confirm that the heating systems do not produce harmful electromagnetic fields.
Ereada mat EMF protection
Ereada mats are designed to provide far infrared heat while minimizing electromagnetic field emissions. Protection from unwanted EMFs is achieved through several design features, including double silicone insulation and shielding of heating elements.
Additional EMI (electromagnetic interference) layers made with copper fiber, charcoal fiber, and aluminum foil help control and reduce residual electromagnetic emissions.
The heavy amethyst layer may also help reduce interference from surrounding electronic devices. Negative potential and negative ion functions may help balance positive ionization often associated with electronic environments.
Testing has shown that the AC magnetic field levels of Ereada mats remain extremely low. Measurements show levels below approximately 0.2 milliGauss (mG) at lower heating levels and below about 0.6 mG at the highest heat level. These levels are below typical household background EMF levels, which usually range between about 0.5 and 4 mG.
For comparison, some common household devices may produce higher EMF levels. Laptop computers may produce approximately 2–20 mG, electric blankets about 5–30 mG, hair dryers about 10–70 mG, and electric floor heating systems may exceed 100 mG.
Ereada mats also use an automatic EMI interception function within the controller. This system detects electrical disturbances and directs them toward the ground connection of the wall outlet, helping maintain extremely low electromagnetic levels.
Beneficial electromagnetic fields
Some forms of electromagnetic energy are commonly used in wellness technologies.
Near-ultraviolet sunlight supports vitamin D production in the skin. Infrared light, especially far infrared (FIR), produces gentle radiant heat that can penetrate tissues without direct contact.
Visible light therapies, often called phototherapy, involve exposure to specific wavelengths of light. These may be generated by lasers, light-emitting diodes (LEDs), or specialized full-spectrum lighting systems.
Full-spectrum light therapy has been used for seasonal affective disorder (SAD) and other mood-related conditions. Red and blue light therapies are commonly used for skin-related treatments.
Visible red light with a wavelength around 660 nm is frequently used in light therapy applications.
Magnetic waves
Magnetism has been used in various traditional practices for centuries. Static magnets have been applied for therapeutic purposes since at least the Middle Ages.
Pulsed electromagnetic field therapy (PEMF), also referred to as ultra-very-low-frequency magnetic stimulation, is a modern technology that delivers pulsed magnetic waves to the body.
In PEMF systems, north and south magnetic poles alternate rapidly, typically several times per second, creating a dynamic magnetic field. These extremely low-frequency magnetic waves can penetrate biological tissues.
The combination of far infrared heat, photon red light, and magnetic pulsation technologies in one device makes Ereada mats distinctive.
Magnetism: static magnets and PEMF
Small electrical currents and magnetic fields naturally exist within the human body due to chemical reactions and biological processes such as brain activity, heart function, digestion, and cellular activity.
PEMF devices generate magnetic fields in frequency ranges similar to those naturally produced by the body.
Purple Ereada amethyst mats and Ereada gemstone mats contain 12 powerful static magnets (24 in Queen mats). These magnets produce approximately 300 Gauss magnetic fields without using electricity.
Compact Pro size and larger mats in the magnetism collections also include copper coils that generate pulsed electromagnetic fields with intensities between about 100 and 400 Gauss. Since 2019, PEMF functionality has also been available in certain mini mat models.
Photon red light energy
Red light therapy using 660 nm LEDs is sometimes referred to as low-level light therapy (LLLT) or photonic stimulation.
Visible red light at approximately 660 nm can penetrate tissues to a depth of several millimeters. This wavelength is widely used in cosmetic and wellness devices for improving the appearance of the skin.
Combining visible red light with deeper-penetrating far infrared crystal heat may provide complementary effects.
Ereada mats equipped with photon LEDs combine visible red light (660 nm) with far infrared radiation in a single device.