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The use of a sauna, that is, sweating in a hot space, has been a practice from the ancient Romans and Greeks to the more modern Russians, Scandinavians, and Japanese.
Today it is used by millions of gyms, physical therapy clinics, spas and rehabilitation/wellness centers around the world, promising a list of health benefits - from weight loss and improved circulation to pain relief and the removal of toxins from the body.
Cancer treatment centers also include local or whole-body hyperthermia, as high temperatures can damage and shrink cancer cells, usually with minimal injury to normal tissues. .
Using an infrared sauna is also a routine for many celebrities, such as Jennifer Aniston. , by Gwyneth Paltrow, Cindy Crawford and Lady Gaga .
The great spread of sauna use in recent years is due to new technologies, mainly carbon panels, which have lowered production costs, making the purchase of saunas for home use possible for a wide audience.
Why Clearlight infrared saunas?
See all available infrared saunas here.
- What are the advantages of infrared saunas compared to conventional ones?
- Sunbathing or Infrared Sauna Therapy or Red Light Therapy (Red Light Therapy - Photobiomodulation);
- What effect does the infrared sauna have on our body?
- Detoxification
- Diabetes
- Heart failure
- Cholesterol
- Hypertension
- Recovery after exercise
- Chronic pain management
- Rheumatoid arthritis and ankylosing spondylitis
- Anorexia
- Strengthening the immune system
- Depression
- Chronic fatigue
- Renal function
- Skin anti-aging
- Wound healing
- Weight loss
- How do we use the infrared sauna?
- Are there any risks from using an infrared sauna?
- Recommended books about infrared saunas and the healing power of heat
What are the advantages of infrared saunas compared to conventional ones?
Infrared saunas produce the same heat produced by the sun, the human body, rocks, etc.
Infrared radiation is part of the invisible spectrum of sunlight that does not contain harmful ultraviolet radiation.
Infrared heat is so safe that it is used in hospitals to keep newborns warm.
Infrared heat can penetrate deep under the skin causing a gentle warming within the body. The warming effect on your body stimulates your cardiovascular system, your immune system and your lymphatic system.
Unlike a traditional sauna, in which we pour water onto hot stones, infrared saunas do not heat the air around you, but your body.
Infrared saunas cause the body to sweat at lower temperatures than those required for traditional saunas, are better tolerated by humans and last longer.
They are ready for use very quickly, in 10-15 minutes, unlike traditional saunas that require 30-90 minutes (longer waiting and operating costs).
Infrared saunas provide gentle therapeutic heat that helps you relax and relieve stress. Traditional saunas operate at extreme temperatures that tend to stress the body rather than relax it.
Infrared radiation penetrates deeper into our body, thus achieving greater detoxification and an effect on more organs.
Infrared saunas are smaller, more affordable (lower purchase and operating costs) and easier to install and maintain.
Sunbathing or Infrared Sauna Therapy or Red Light Therapy (Red Light Therapy - Photobiomodulation);
The main difference between sunbathing and infrared sauna and/or red light therapy is that the latter expose us to only a safe part of the solar spectrum.
Sunbathing exposes us to a wide range of frequencies:
Ultraviolet: UVA/UVB/UVC (just before ionizing/radioactive radiation, with very short wavelengths 10 - 400 nm)
Visible light – the only part of the electromagnetic spectrum that is visible to the human eye: Purple 400-440 nm, Blue - 440 - 490 nm, Green - 490 - 570 nm, Yellow - 570 - 585 nm, Orange - 585 – 620 nm, Red 620 - 780 nm
Infrared: Near infrared with wavelengths of 700 – 1400 nm, Mid infrared with wavelengths of 1400 – 3000 nm and Far infrared with wavelengths of 3000 – 100000 nm (longer wavelength = greater penetration depth into the human body).
Short-term exposure to the sun is beneficial for humans as it helps produce vitamin D and strengthen the immune system.
Prolonged exposure to the sun, due to ultraviolet radiation, is linked to photoaging and skin cancer.
Periodic use of infrared saunas and/or red light devices:
- does not expose us to ultraviolet radiation
- it doesn't tan our skin
- It takes place in our space, in the privacy of our home.
- is available at any time, unlike the sun
- can expose our entire body, while sunbathing naked is less practical
What effect does the infrared sauna have on our body?
Infrared radiation is the part of solar radiation that warms us and has the lowest frequency, the longest wavelengths and the greatest penetration depth.
When infrared waves come into contact with body tissues, they cause molecules to vibrate, which produces heat and causes the body temperature to increase.
The heart rate increases and blood vessels dilate, resulting in increased blood circulation.
At the same time, sweating and the elimination of toxins from the skin, our largest organ, increase.
These reactions are similar to the way the body responds to low to moderate exercise or during the development of a fever, which is also the main way our body deals with viruses.
The most popular uses of the infrared sauna are weight loss, relaxation, improved circulation and recovery after exercise, while therapeutically it is used in heart failure, hypertension, treatment of chronic pain, rheumatoid arthritis and ankylosing spondylitis, anorexia, depression, chronic fatigue, detoxification, kidney function, weight loss, etc.
There is increasing evidence regarding the clinical use of infrared saunas for therapeutic purposes.
Since it does not produce much heat and has a shallower penetration depth, red light therapy is gentler on the body and is mainly used for anti-aging and dermatological problems such as treating psoriasis, eczema, scars, wrinkles and fine lines on the skin, combating hair loss, etc. Both treatments have advantages and can be combined for optimal results. The Red Light Therapy Tower can be used as a standalone product outside the sauna, or inside the sauna for simultaneous use (only in Clearlight sauna models). See more about the benefits of red light here.
Detoxification
Infrared saunas are a key part of many detoxification protocols because they increase sweating, which can increase the excretion of impurities, such as heavy metals, found in sweat. Detoxification strengthens the immune system and improves biochemical processes that contribute to better digestion and absorption of nutrients.
See more:
Components of Practical Clinical Detox Programs - Sauna as a Therapeutic Tool
Bastyr University - Sauna Detoxification Study
Sweating Helps to Detox Body of Heavy Metals
Detoxification Through The Skin.
IFD picks up detox sauna to fight cancer
Diabetes
By improving circulation, infrared saunas help recover from damage caused by type 1 or 2 diabetes.
The conclusion of a relevant research was that:
“Our results suggest that infrared sauna use may be beneficial in reducing blood pressure and waist circumference. Participant compliance with infrared sauna use is greater than adherence to other lifestyle interventions. The combination of favorable compliance, as well as effectiveness in improving blood pressure and possibly waist circumference, makes infrared sauna therapy an attractive lifestyle option.”
See more:
Do Far-infrared Saunas Have Cardiovascular Benefits in People with Type 2 Diabetes?
Heart failure
Twenty subjects with high numbers of premature ventricular contractions (PVCs), which are associated with congestive heart failure (CHF), followed the researchers' two-week protocol, with daily exposure to an infrared sauna at 60°C for 15 minutes. The treatment resulted in a>70% reduction in contractions (on average from 3097 to 848 per 24 hours). .
A 2018 meta-analysis that included 9 clinical trials found that five infrared sauna sessions per week for 2 to 4 weeks were associated with a significant reduction in brain natriuretic peptide (BNP - a marker of heart failure progression) and cardiothoracic ratio (an indicator of heart enlargement). .
“Waon” therapy (Japanese: “soothing warmth”), a form of infrared sauna developed in Japan and used for patients with chronic heart failure and other conditions, improves many markers of cardiac function, such as vascular resistance and blood pressure. .
See more:
Beneficial effects of sauna bathing for heart failure patients
Beneficial effects of sauna bathing for heart failure patients
Waon (Infrared) therapy mobilizes CD34+ cells and improves peripheral arterial disease
Cholesterol
Researchers who studied the effect of sauna use on levels and the ratio of good/bad cholesterol concluded that “The positive effect of sauna use on the lipid profile is similar to the effect that can be achieved through moderate intensity physical exercise.”
See more:
The effect of sauna bathing on lipid profile in young, physically active, male subjects.
Changes in the lipid profile of blood serum in women taking sauna baths of various duration.
Hypertension
Patients with at least one risk factor for coronary heart disease used an infrared sauna at 60 degrees C for 15 minutes once a day for two weeks. Systolic blood pressure was significantly reduced (110 +/- 15 mmHg vs. 122 +/- 13 mmHg). Levels of 8-epi-prostaglandin, a marker of oxidative stress, were also significantly reduced, which helps prevent atherosclerosis. .
Recovery after exercise
Ten high-level athletes underwent intense weight training and used a full-body infrared bag (40 minutes at 50ºC) every night. The study showed that infrared heat improved recovery by increasing the Testosterone/Cortisol ratio, allowing for harder training and accelerated athletic development. .
And another study with athletes participating in a weight training or resistance training program and using an infrared sauna at the end of each workout for 30 minutes at 35-50° showed positive results in recovery. .
Chronic pain management
Researchers examined the notion that whole-body heating can reduce pain and improve outcomes in patients with chronic pain. Using an infrared sauna once a day for 4 weeks showed significant improvement in subjective symptoms, pain ratings, and levels of depression and anger. .
See more:
The effects of repeated thermal therapy for patients with chronic pain.
Phantom limb pain treated by far infrared ray
Rheumatoid arthritis and ankylosing spondylitis
Patients who received 8 infrared sauna treatments over a 4-week period showed short-term improvement in pain and stiffness, while the researchers estimate that infrared sauna use is likely to have long-term beneficial effects. .
Anorexia
A single study reports that infrared sauna therapy helped improve anorexia nervosa in a teenage girl, who after regular infrared sauna sessions at home regained weight, experienced a decrease in hyperactivity, and regained emotional balance. .
Strengthening the immune system
The deep heat from infrared saunas will raise your body's core temperature, causing an artificial fever.
How does this benefit the organization?
Fever is the body's natural mechanism for strengthening and accelerating the immune response and, combined with the improved elimination of toxins through profuse sweating, increases overall health and resistance to disease.
Depression
Patients with mild depression, general fatigue and loss of appetite participated in 20 infrared sauna sessions (15 minutes at 60°C) over a four-week period, resulting in significant improvements in physical complaints, lack of appetite and ability to relax. .
Chronic fatigue
2 women with severe chronic fatigue participated in 30 15-minute infrared sauna sessions at 60°C, five days a week for six weeks. Both women reported “dramatic improvements” in fatigue, pain, and sleep disturbances. .
Renal function
Studies have shown positive results from the use of infrared saunas in the treatment of people with chronic kidney disease. and in patients undergoing hemodialysis.
See more:
Role of Far Infrared Therapy in Dialysis Arterio-Venous Fistula Maturation and Survival
Thermal therapy in dialysis patients - a randomized trial.
Skin anti-aging
The use of infrared radiation, according to a study , helps to treat skin aging, increasing collagen and elastin produced by fibroblasts, while the increase is proportional to the duration of exposure.
See more:
Effects of Infrared Radiation on Skin Photo-Aging and Pigmentation
Far-infrared suppresses skin photoaging in ultraviolet B-exposed fibroblasts and hairless mice
High-energy protocol improves photoaged facial skin
Objective assessment of skin rejuvenation using near-infrared 1064-nm neodymium: YAG laser in Asians
Wound healing
Improving skin microcirculation and activating fibroblasts is the explanation for the positive effects of infrared heat in wound healing.
See more:
Promotive Effects of Far-Infrared Ray on Full-Thickness Skin Wound Healing
Biological effect of far-infrared therapy on increasing skin microcirculation
Analysis of the Systemic Effect of Red and Infrared Laser Therapy on Wound Repair
Weight loss
The infrared sauna is an effective method for significantly increasing the rate of energy expenditure in the body.
According to Dr. Raleigh Duncan, founder and designer of Clearlight saunas, there is a direct link between weight loss and the reduction of toxins in fat cells (such as the chemical BPA) through the deep detoxification provided by an infrared sauna. Many toxins are estrogenic and make it more difficult to lose body fat.
Infrared saunas are used in many centers for cellulite reduction, since far infrared heat heats three times deeper than conventional saunas and increases local blood circulation.
According to the American Medical Association: "A person can secrete 500 grams of sweat in an infrared sauna, consuming almost 300 kcal, equivalent to running 2-3 miles." !
In a study with impressive results, subjects participated in either 15 minutes of cardiovascular exercise followed by 30 minutes of infrared sauna (55-60°C) or 15 minutes of exercise alone, three times a week for eight weeks. Subjects in the sauna group lost 1.8 times more weight and 4.6 times more body fat than the exercise-only group!
Another study by Binghamton University in New York concluded that people who used our Clearlight Premier IS-3 infrared sauna three times a week for 30 minutes per session lost an average of 4 percent body fat over a four-month period. For a person weighing 80 kg, this represents a weight loss of 3 kg, without any change in lifestyle!
Participants who experienced weight loss in the infrared sauna did not change their exercise or diet patterns during the study. The control group that did not use the Clearlight infrared sauna did not experience any weight loss.
See more:
Sauna-Induced Body Mass Loss in Young Sedentary Women and Men
Clinical Implications of Thermal Therapy in Lifestyle-Related Diseases
How do we use the infrared sauna?
- Dress lightly, with a bathrobe, a towel, your swimsuit, or no clothes at all.
- Drink a glass of water before entering the infrared sauna. Avoid drinking alcohol before using the sauna.
- Choose a temperature. Carbon panel saunas reach up to 60°C which is tolerable by most, however if you are a beginner start with lower temperatures of 40-50°C.
- Adjust the time of stay, from the switch that the saunas have. Saunas take 5-20 minutes to heat up depending on the outside temperature. If you are a beginner, stay in the sauna for 5 minutes at a temperature>45°C and gradually increase to 15-30 minutes or until you develop a sweat.
- Inside the sauna, relax, read, meditate or listen to music from the built-in radio. Be careful not to fall asleep!
- You can use the sauna from once a week to daily.
- A protocol often used in studies is the use of an infrared sauna 4-5 times a week, 15 minutes at a temperature of 60°C.
Are there any risks from using an infrared sauna?
Sauna therapy has a long history of safe use in many populations.
With a few exceptions, possibly including pregnant women and people with existing cardiovascular disease, saunas are considered quite safe.
According to published recommendations , people with aortic stenosis, unstable angina, severe orthostatic hypotension, or any history of recent myocardial infarction should avoid sauna therapy.
It is also recommended to avoid it in people with fever and certain skin diseases (cholinergic urticaria, abrasions and rashes with secretions).
Saunas may cause dehydration more easily in people with kidney disease.
There is also uncertainty about sauna use during early pregnancy, with the main concerns being that hyperthermia may be teratogenic and/or increase the risk of miscarriage.
In extreme cases, some people may experience heatstroke or dehydration.
Most adverse side effects associated with saunas appear to involve drinking alcohol before entering the sauna.
Consult a healthcare professional regarding the use of an infrared sauna or red light depending on your health condition.
Recommended books about infrared saunas and the healing power of heat
"Sauna Salvation" is a comprehensive guide for those who wish to improve their physical and mental health through sauna use. The book examines how heat can enhance blood circulation, improve cardiovascular function, and promote detoxification of the body. Breathing and relaxation techniques are provided to maximize the benefits of each session.
In addition, the author analyzes the spiritual dimension of the sauna, showing how its regular use can enhance self-awareness, concentration and mental toughness. The book includes practical programs for daily application, making it easy to integrate the sauna into your routine. Through scientific analysis and personal experiences, readers are guided in the safe and effective use of heat.
"The Far-Infrared Heat Miracle" focuses on infrared heat as a new generation therapeutic tool. The book explains how infrared rays penetrate deep into tissues, enhancing cellular renewal and promoting the body's natural healing. Scientific data is provided on the positive effects on the rehabilitation of musculoskeletal and chronic problems.
Practical applications for improving overall endurance, well-being, and quality of life are discussed. The authors combine theory and empirical examples to show how infrared heat can be an important tool for the prevention and treatment of disease. The book also includes instructions for safe use at home and in professional centers.
"Sweat" highlights the importance of sweat as a key tool for health and well-being. The book explains how sweating helps remove toxins, regulate body temperature, and enhance blood circulation. Strategies are provided for optimally using sweat in everyday activities and training.
In addition, the effect of sweat on mental endurance, energy, and general well-being is examined. Practical instructions and techniques are included that enhance the body's physical strength and resilience. Through scientific data and personal experiences, the book offers a comprehensive understanding of the benefits of sweating.
The "Life Extension Sauna Handbook" is the ultimate guide to anti-aging and fitness enhancement through sauna use. The book explains how regular use can help reduce fat, increase muscle mass, enhance brain function, and detoxify. Specific programs and schedules are provided for optimal results.
It also describes the effects of sauna use on longevity, improved endurance, and mental well-being. The book combines scientific data with practical instructions, giving readers tools for safe and effective use. It is suitable for beginners and advanced users who want to integrate sauna use into their daily lives.
"101 Facts About the Sauna" offers complete guidance for those who want to utilize the sauna in their daily lives. It includes 101 important facts, practical tips and routines to improve physical and mental well-being. The presence of a calendar allows for tracking progress and personal goals.
The book is useful for both beginners and advanced users, combining theory and practical applications. Techniques for detoxification, relaxation and endurance building are provided, while emphasis is placed on the gradual integration of sauna into everyday life for maximum results.
"Saunas Simplified" offers a simple and understandable introduction to the sauna and its benefits. The book explains in detail how proper sauna use can improve health, detoxification, and mental well-being. Instructions for safe and effective use on a daily basis are included.
In addition, practical tips and strategies for enhancing endurance, energy and relaxation are provided. The book is ideal for both beginners and advanced users who want to fully utilize the sauna, while combining scientific data with practical instructions.
"Arming the Immune System" presents the impressive power of the innate immune system and the critical role played by the fever response. Through scientific analysis, the author shows how our body is programmed to activate defense mechanisms that are often overlooked in modern medical practice. He explains how innate immunity functions as the first and most important line of defense against infections.
The book is impressive because it illuminates in detail the positive side of fever, a symptom usually considered the enemy. It focuses on its importance in killing germs and strengthening the immune response. It is a work that inspires readers to see their bodies with new eyes and appreciate the wisdom of nature.
Dr Kazuko Tatsumura, known for her many years of experience in alternative therapies, presents in "Overcoming Cancer" a comprehensive approach to the treatment of cancer and other diseases. The book integrates philosophy, scientific evidence and traditional methods, emphasizing holistic treatment of the body and mind. The author highlights the importance of nutrition, energy and emotional balance.
Tatsumura impresses with her ability to bridge Eastern and Western thought, presenting stories of patients who found strength and hope through natural and complementary therapies. This work is not only a health guide, but also a message of inspiration, demonstrating that healing is a multidimensional process that goes beyond medication.
The book "Water-filtered Infrared A (wIRA) Irradiation" by Peter Vaupel is a comprehensive presentation of the research and clinical application of wIRA infrared radiation. This technology has been shown to be highly effective in improving wound healing, relieving pain, and enhancing circulation. The author analyzes its physiological action with detail and scientific accuracy.
The book's appeal lies in the fact that it translates research directly into clinical practice. Readers will find information on the safety, indications, and possible future applications of this technology. Vaupel, with many years of experience in biomedicine, makes this work invaluable for healthcare professionals and those interested in innovative treatment methods.
Brad Pilon, known for his work on nutrition and health, explores the role of heat in weight loss, athletic performance, and wellness in "The Book on Heat." He analyzes how heat can act as a tool to speed up metabolism and improve fitness. He presents research data and practical applications that are backed by science.
The book is special because it transforms a simple natural force, heat, into a means of improving our lives. Pilon manages to bridge scientific theory with everyday practices, giving readers clear steps for utilizing heat in training and therapeutic contexts. A work that combines knowledge and inspiration.
"Mistletoe and the Emerging Future of Integrative Oncology" examines the role of mistletoe as a therapeutic agent in integrative oncology. The book includes contributions from experts in the field and offers a comprehensive view of how the traditional use of mistletoe integrates with modern medicine. The importance of personalized treatment and collaboration between classical and alternative approaches is emphasized.
An impressive element is the presentation of clinical studies and real-life examples that show how mistletoe can improve the quality of life of cancer patients. This work opens new avenues in therapeutic thinking, emphasizing holistic care and patient empowerment.
"98.6: Ideal Body Temperature as the Secret to Optimum Health" focuses on the importance of maintaining ideal body temperature for overall health. The author explains how even a small drop or rise in temperature can affect the immune system, metabolism, and energy. Practical strategies for regulating temperature through lifestyle, diet, and environmental factors are presented.
An interesting point of the book is the connection between temperature and longevity. The author analyzes how understanding this “hidden secret” can offer new possibilities for preventing diseases and enhancing well-being. A work that gives a new dimension to something as everyday as body temperature.
Discover more resources to support your health: https://www.home-wellness.gr/health-resources
https://www.cancer.gov/about-cancer/treatment/types/surgery/hyperthermia-fact-sheet
https://greatideas.people.com/2016/01/21/jennifer-aniston-infrared-saunas-justin-theroux/
https://www.healthline.com/health/under-review-infrared-saunas
ORIGINAL RESEARCH | VOLUME 34, ISSUE 2 , P113-118, JANUARY 01, 2010, Do Far-infrared Saunas Have Cardiovascular Benefits in People with Type 2 Diabetes? Richard Beever, BSc MD CCFP CI , DOI: https://doi.org/10.1016/S1499-2671 (10)42007-9
Circ J . 2004 Dec;68(12):1146-51. doi: 10.1253/circj.68.1146.Effects of repeated sauna treatment on ventricular arrhythmias in patients with chronic heart failure Takashi Kihara 1 , Sadatoshi Biro , Yoshiyuki Ikeda , Tsuyoshi Fukudome , Takuro Shinsato , Akinori Masuda , Masaaki Miyata , Shuichi Hamasaki , Yutaka Otsuji , Shinichi Minagoe , Suminori Akiba , Chuwa Tei.
Källström M, Soveri I, Oldgren J, Laukkanen J, Ichiki T, Tei C, et al. (November 2018). "Effects of sauna bath on heart failure: A systematic review and meta-analysis" . Clinical Cardiology. 41 (11): 1491–1501.
Cho GY, Ha JW (June 2010). "Waon therapy, can it be a new therapeutic modality in heart failure patients?" . Journal of Cardiovascular Ultrasound. 18 (2): 43–4., Kihara T, Miyata M, Fukudome T, Ikeda Y, Shinsato T, Kubozono T, et al. (April 2009). "Waon therapy improves the prognosis of patients with chronic heart failure" . Journal of Cardiology.
Jpn Heart J, 2004 Mar;45(2):297-303, doi: 10.1536/jhj.45.297., Repeated sauna therapy reduces urinary 8-epi-prostaglandin F(2alpha), Akinori Masuda 1 , Masaaki Miyata , Takashi Kihara , Shinichi Minagoe , Chuwa Tei .
Research Article, J Athl Enhancement Vol: 4 Issue: 4, Effects of Far Infrared Heat on Recovery in Power Athletes, www.scitechnol.com/scholarly/endocrine-glands-journals-articles-ppts-list.php Perttu VA Noponen 1 , Keijo Häkkinen 2 and Antti A Mero
https://pubmed.ncbi.nlm.nih.gov/26180741/ , Effects of far-infrared sauna bathing on recovery from strength and endurance training sessions in men
Psychother Psychosom, doi: 10.1159/000086319, The effects of repeated thermal therapy for patients with chronic pain, Akinori Masuda 1 , Yasuyuki Koga , Masato Hattanmaru , Shinichi Minagoe , Chuwa Tei
Infrared sauna in patients with rheumatoid arthritis and ankylosing spondylitis. A pilot study showing good tolerance, short-term improvement of pain and stiffness, and a trend towards long-term beneficial effects Fredrikus GJ Oosterveld 1 , Johannes J Rasker , Mark Floors , Robert Landkroon , Bob van Rennes , Jan Zwijnenberg , Mart AFJ van de Laar , Gerard J Koel
Gutierrez E, Vazquez R. Heat in the treatment of patients with anorexia nervosa. Eat Weight Disord 2001;6:49-52
Matsuda A, Nakazato M, Kihara T, et al. Repeated thermal therapy diminishes appetite loss and subjective complaints in mildly depressed patients. Psychosom Med 2005;67:643-647.
Masuda A, Kihara T, Fukudome Y, et al. Effects of repeated thermal therapy for two patients with chronic fatigue syndrome. J Psychosom Res 2005;58:383-387
An Update of the Effect of Far Infrared Therapy on Arteriovenous Access in End-stage Renal Disease Patients, Chun-Fan Chen , Wu-Chang Yang , Chih-Ching Lin , MD, PhDFirst Published January 6, 2016
Yonsei Med J . 2006 Aug 31; 47(4): 485–490., Effects of Infrared Radiation on Skin Photo-Aging and Pigmentation, Ju Hee Lee , Mi Ryung Roh , and Kwang Hoon Lee
Searle AJ "Effects of the sauna" Journal of the American Medical Association, https://en.wikipedia.org/wiki/Infrared_sauna
Correll ML, Williams PJ, Wild JJ. Reduction of blood pressure, body weight and % body fat after far infrared (FIR) sauna therapy.
https://www.clearlightsaunas.eu/pdf/weightlossstudy.pdf
https://www.healthline.com/health/infrared-sauna-benefits
Sauna as a Valuable Clinical Tool for Cardiovascular, Autoimmune, Toxicantinduced and other Chronic Health Problems Walter J. Crinnion, ND, Environmental Medicine, https://archive.foundationalmedicinereview.com/publications/16/3/215.pdf