Use of Infrared Sauna Therapy: To Improve Clinical Symptoms of Chemical Toxicity

 In Dermatology, Detoxification Medicine, Education

Wendy Davis, BKin, ND

What is detoxification? This short question can have many long answers, especially for the ND. The New Webster’s Medical Dictionary defines it as, “To decrease the toxic properties of a substance; to remove the effects of a toxic drug.”

In essence, that is what we NDs are trying to do with all the various forms of detoxification and cleansing programs that we recommend to patients. To improve the body’s ability to remove toxic chemicals is at the heart of any detoxification program. In doing so, we remove the obstacle to cure and allow for the healing powers of nature to work more effectively.

The number of synthetic chemicals in the environment – more than 5 million by some counts (Kaur and OAND 2006; Environment Canada, 2007) – highlights the need for regular detoxification and cleansing to maintain and regain health. Numerous studies report on the levels of toxic chemical buildup in North Americans and have demonstrated that a number of these toxins are associated with serious health conditions (Toxic Nation Report, 2005). One study showed that in every individual tested, 88 different chemicals were found, 60 of these known to have negative effects on respiratory, immune and neurological systems (Toxic Nation Report, 2005).

Sauna Therapy Background

Sauna therapy has been a part of traditional healing practices for centuries. The Greeks and Romans used bathhouses to both cleanse and detoxify. Native peoples have held healing sweat lodges to help purify themselves both spiritually and physically.

Until recently, European or Finnish saunas have been the type used extensively in North America, as they are more commonly known. Finnish saunas rely on electricity or steam to produce indirect heat to warm the body. The convection (air currents) and conduction (contact between hot air and skin) of hot air produces an increased temperature (75-95C/167-203F), warming the air first and then the body, producing increased perspiration. This increased air temperature and humidity increase cardiovascular and respiratory rates, making these saunas uncomfortable when used for long periods of time. This often prevents elderly and asthmatic patients, individuals who suffer from most respiratory or cardiovascular conditions, pregnant women and those with heat-sensitive conditions from using this therapeutic tool.

Infrared saunas use ceramic heaters that produce radiant heat. Radiant heat, unrelated to ultraviolet or atomic radiation, is a form of energy that heats objects directly without having to heat the air between. Radiant heat is also called infrared energy.

Infrared energy is invisible to the human eye, but can be felt as heat. This energy is measured in wavelengths. The most beneficial for human health is 4-14 microns in length. Infrared saunas emit these infrared wavelengths that cause a slight vibration of molecules, enhancing metabolic changes between cells and increasing temperature (Kaur, 2006). In this way, infrared saunas are able to achieve two to three times more sweat at much lower temperatures (45-50C/113-122F), increasing the tolerability of this therapy and the type of patients who can benefit from sauna therapy.


Both traditional and infrared saunas utilize the skin as the vector of elimination. The skin is the largest organ of detoxification, as its surface area can measure up to two square meters. The dermal layer of the skin is composed of connective tissue containing many blood vessels, lymphatic vessels and nerves, and is connected to the underlying deep fascia or bones by the subcutaneous tissue (Snell, 2000). Due to this proximity to the circulatory, skeletal and lymphatic systems, increasing the metabolism of these tissues with heat therapy increases the eliminatory actions of the skin.

The sweat glands naturally excrete urea, sodium, chlorine, magnesium, calcium, potassium, phosphorous, zinc, copper, nickel, cadmium and manganese (Hoshi, 2001). In addition, perspiration can eliminate water- and fat-soluble toxins (Kuksis, 1979). Drugs (e.g., amphetamines, morphine and methadone) and many environmental contaminants (e.g., pesticides, PCBs and dioxin) can be excreted via sweat (Oesch et al., 2007; Rea, 1967).

Mercury, aluminum, lead, nickel and cadmium have also been shown to be excreted through the skin (Kaur, 2006; Peltonen, 1979). These toxins being drawn out through the skin are originating from the subcutaneous layers of adipose tissues, but it has been hypothesized that with long-term use of infrared sauna therapy, toxins deposited deeper in the body, in bones and internal organs, are able to be eliminated as well (Cohn and Emmett, 1978; Rabinowitz, 1976).

Clinical Indications

Infrared sauna therapy has been studied extensively and shown to be extremely beneficial for various conditions, many of which are exacerbated by an increased toxic burden.

  • Infrared saunas increase oxygenation of the mitochondria, improving energy production and helping to minimize chronic fatigue syndrome symptoms (Masuda, 2007)
  • Saunas promote improved muscle tone and an increased rate of healing, indicating the benefits for many athletes and individuals suffering from fibromyalgia (Matsushita, 2008)
  • Saunas have been demonstrated to reduce swelling and pain and greatly improve clinical markers in those suffering from chronic pain (Masuda 2005), rheumatoid arthritis and ankylosing spondylitis (Oosterveld, 2008)
  • Atherosclerosis and congestive heart disease, depression, drug addiction and multiple chemical sensitivity have all been studied and shown to benefit from infrared sauna therapy (Imamura, 2001; Masuda, 2005; Checcini and LoPresti, 2007; Crinnion, 2006)


There are some clinical conditions that are not suited for infrared sauna therapy.

  • Severe lymphedema
  • Pregnancy and breastfeeding
  • Individuals with pacemakers and metal implants
  • Caution should be taken with kidney, heart and liver disease, seizure disorders and hypoglycemia
  • It is recommended that patients wait two weeks after surgery
  • Medications and nutrients may be metabolized more quickly; therefore, monitor patients appropriately and give supportive nutrients as needed (Kaur, 2006; Hannuksela and Ellahham, 2001)

Recent Research

Two recent studies illustrate the benefits of infrared sauna therapy.

In a small, placebo-controlled pilot study, Canadian doctors Sat Dharam Kaur, ND and Gordon Ko, MD set out to demonstrate whether environmental chemicals and heavy metals can be effectively eliminated from the body through perspiration induced from regular use of an infrared sauna.

Numerous environmental chemicals and heavy metals were evaluated via blood and urine before and after the study, and a regimented supplement program was instituted as part of the pilot study.

Participants underwent sauna treatments for 1-1.5 hours at a time for a total of 50 hours over the course of the study.

At the end of the study, it was shown that the mean plasma toxicology (pesticides, PCBs, total toxins) decreased by 15%-25% after 50 hours and mercury levels decreased by 35%. Lead levels increased after 50 hours, but in a subsequent study in which sauna therapy was maintained for 100+ hours the lead levels decreased significantly (Kaur, 2006). See the accompanying graphs.

In a larger study in the U.S., it was shown that sauna therapy was a significant factor in the health improvement of many emergency workers affected by the chemicals and breakdown products encountered during the cleanup in New York after the bombing of the World Trade Center in 2001. Between September 2001 and September 2005, more than 500 men and women completed the Hubbard sauna detoxification regimen developed by L. Ron Hubbard in 1979 (Cecchini, 2007). This involved physical exercise; nutritional supplementation comprised of vitamins, minerals, electrolytes and oils; and 2.5-5 hours of sauna therapy daily. The average time to completion was 33 days.

After completion of the study, individuals reported 0.2 days per month of missed work or limited activities, down from 4.4 days of limited activity and 2.1 days missed work. An 84% reduction in medication use in those individuals requiring medications at the beginning of the program was seen, and an improvement in vestibular function, reaction time, blood cholesterol levels, thyroid function and an overall improvement in quality of life were also demonstrated (Cecchini, 2006).

Practical Applications

There are a number of ways to use infrared saunas; numerous protocols are available. An ND-authored handbook outlines various protocols (Kaur, 2006), and other physicians have designed useful detoxification regimens, as well.

Proper preparation for sauna detoxification will help to minimize the chance of any negative detoxification reactions.

  • Eliminating dysbiosis is crucially important, as is establishing healthy detoxification in the liver, kidneys and lymphatic system. This is essential and should be initiated prior to starting sauna treatments. If, however, this is not possible, concurrent cleansing is effective, but there may be occasional detoxification reactions such as headaches, nausea, fatigue, constipation and acne
  • It is advisable to start slowly, with moderate temperatures (90F) and 10-15 minutes per session. As the patient adjusts and is able to sweat more effectively, the times can be increased by five to ten minutes and temperatures increased by 10-15 degrees a session.
  • Niacin can be given at the beginning of the session to promote lipid mobilization of stored toxicants and stimulate circulation (Hubbard, 2002)
  • Adequate hydration is necessary during every session and, due to the increased mineral and electrolyte elimination, a multi-mineral and electrolyte replacement should be given at the completion of each session
  • Essential fatty acids, psyllium husks in water and alkaline powder are recommended at the completion of every session (Kaur, 2006)
  • Dry skin brushing and a cleansing shower soon after completion of each session also helps to improve lymphatic circulation and detoxification

As naturopathic practitioners, we know that most patients have an elevated body burden of numerous toxic chemicals, and it is due to this buildup that we see many of the conditions we do. Regular detoxification programs using dietary modifications, supplements and lifestyle adjustments can help support the organs of elimination and reduce toxic accumulation. Adding infrared sauna therapy will improve outcomes in even the most toxic patient.

DavisWendy Davis, BKin, ND owns and operates Harmony Health Naturopathic Clinic in Orangeville, Ont. She has a family focused practice with special emphasis on sports medicine, endocrine and digestive health, and uses an eclectic mix of many naturopathic therapies with patients. Her recent work with The Millcroft Inn and Spa’s Naturopathic Detoxification Program has been an exciting experience that has successfully demonstrated the incredible benefits of all aspects of detoxification and cleansing programs.


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