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A study of patients with rheumatoid arthritis and ankylosing spondylitis showed a reduction in pain, stiffness and fatigue during infrared sauna therapy.
“Toxins” and “toxicity” are general terms used by alternative health professionals and some doctors to cover a wide range of substances from petrochemicals to heavy metals, which are excreted in very small quantities while sweating. (less than 1%) see sweat composition. Proponents of FIR sweating claim a toxin content of up to 15% vs. conventional sweating. Saunas may be useful to those who cannot sweat from exercise due to their health problems.
Only if the sauna uses far-infrared technology, the sauna might be more tolerated by patients who don’t tolerate the high temperatures of the standard humid hot air saunas. This is because far-infrared rays do not heat the air inside the sauna, but they still heat the body.However, most infrared saunas in the market do not use the expensive far-infrared panels, which can be touched because they remain always cold, but much cheaper low and medium-infrared heaters, which remain very hot when used and also heat the air of the sauna.
Some infrared sauna proponents claim that the sauna is an effective method for considerably raising the rate of energy expenditure in the body. Proponents typically quote theJournal of the American Medical Association stating: “A moderately conditioned person can easily sweat off 500 grams in a sauna, burning nearly 300 kcal, which is equivalent to running 2–3 miles. A heat-conditioned person can easily sweat off 600–800 kcal with no adverse effects. While the weight of the water loss can be regained by drinking water, the calories burnt will not be.”