Posted on 5 May 2021

Immunity and General Wellness

Stay healthy with the natural preventive properties of Sunlighten’s patented infrared technology. According to doctors, their patients, researchers and our customers, regular use of our saunas is key for general wellness routines, especially now.

Infrared light is the invisible part of the sun’s spectrum, which has the ability to gently and comfortably penetrate human tissue to produce a host of health benefits. It’s the same spectrum that stimulates plant growth due to cell generation. Naturally occurring from the sun, Sunlighten has harnessed this spectrum in our patented heaters, the benefits from which provide a holistic approach to a healthier mind and body. 

You manage your diet, your fitness/activity levels, your water intake, your mental health – regular sauna use can help support all of these goals with benefits for circulation, weight loss, sleep, immunity, stress relief, and general pain relief. 

Near Infrared (NIR) for Immunity

NIR heaters consisting of high-wattage halogen bulbs at extremely high temperatures are not comfortable or beneficial. In order to make NIR heat safe for saunas, Sunlighten used NASA research to develop a patented LED array that provides NIR at a singular wavelength with minimal variability and virtually undetectable heat and light.

Several studies have shown that LEDs (like those found in Sunlighten’s mPulse® saunas) stimulate white blood cell production and collagen growth by increasing energy at the cellular level.

For example, a study done at the Medical College of Wisconsin demonstrated that LED-produced near infrared helps promote cell health and regeneration.1-2 The LEDs in Sunlighten’s SoloCarbon® 3 in 1® heaters produce infrared in this same range.

Immunity Icon

Benefits of Circulation

A Sunlighten infrared sauna stimulates the circulatory system, causing the heart to beat more vigorously and blood vessels to dilate, which helps cleanse the circulatory system and more fully oxygenate the body’s cells. Better blood circulation means more toxins flow from deep tissue to the skin’s surface to help with cell health and the immune system.

Immune Health

Raising core body temperature is key to keeping you healthy. Although Sunlighten saunas heat you up differently than a fever, the increased body temperature provides similar benefits, including white blood cell and T-cell production to help ward off viruses. This heat produces a deep, detoxifying sweat below the skin’s surface, where most toxins reside. Your sweat then pushes out the toxins, cleansing your body and rejuvenating your skin. Sunlighten saunas are the only ones to have been proven to raise core body temperature by 3 degrees.

An Austrian study3 of 25 healthy subjects who regularly used saunas found they had significantly fewer episodes of common colds than those who did not. This benefit becomes more significant, especially after 14 weeks of consecutive sauna use. To maximize these benefits, it’s recommended to use it at least twice a week throughout the year.

Read more in our blog, How to Strengthen Your Immune System.


  1. Harry T. Whelan et al; Effect of NASA Light Emitting Diode Irradiation and Wound Healing. Journal of Clinical Laser Medicine & Surgery, Volume 19, Number 6, 2001, Mary Ann Liebert, Inc, pp. 305-314.
  2. Harry T. Whelan, Ellen V. Buchmann, Noel T. Whelan, Scott G. Turner, Vita Cevenini, Helen Stinson, Ron Ignatius, Todd Martin, Joan Cwiklinski, Glenn A. Meyer, Brian Hodgson Lisa Gould, Mary Kane, Gina Chen , James Caviness. NASA Light Emitting Diode Medical Applications From Deep Space to Deep Sea. CP552, Space Technology and Applications International Forum-2001, edited by M. S. El-Genk. Copyright 2001 American Institute of Physics 1-56396-980-7/01.
  3. Ernst, E., Pacho, E., Wirz P, Saradeth T. Regular sauna bathing and the incidence of common colds. Ann Med. Vol 22(4); 225-7 (1990).

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