Far infrared therapy utilizes a specific type of light invisible to the human eye to interact with the body. This non-invasive approach involves exposing the body to far infrared rays, which are believed to support various physiological functions and promote general wellness.
What is Far Infrared Light?
Far infrared (FIR) light is a segment of the electromagnetic spectrum, distinct from visible light. While sunlight contains FIR, it is the part that we perceive as warmth rather than illumination, and it does not cause sunburn. FIR wavelengths typically range from 3 micrometers to 1 millimeter, a much longer wavelength than visible red light.
This range of radiation is also emitted naturally by all warm objects, including the human body, with a peak emission around 9.4 micrometers. Unlike near or mid-infrared, FIR is absorbed purely as heat by the skin’s thermoreceptors. This characteristic allows FIR to penetrate tissues and cells without causing damage, making it suitable for therapeutic applications.
How Far Infrared Therapy Works
Far infrared therapy operates by allowing FIR energy to be absorbed by the body’s cells and tissues. These invisible waves penetrate beneath the skin, reaching depths of approximately 2 to 7 centimeters, and can interact with muscles, nerves, and even bones. This deep penetration leads to a gentle, internal heating effect within the body.
The absorption of FIR energy causes molecules, including water molecules, to vibrate. This increased molecular motion generates heat and promotes physiological responses. One proposed mechanism involves an increase in nitric oxide production, which helps relax and expand blood vessels, leading to improved blood circulation. This enhanced circulation allows for greater delivery of oxygen and nutrients to cells, supporting their proper function and stimulating cellular metabolism.
Potential Health Benefits
Far infrared therapy is associated with several potential health benefits, largely stemming from its ability to induce a gentle, deep heating effect and improve circulation. One benefit is temporary pain relief and reduction of inflammation. FIR warms muscle fibers, which can lead to a reduction in swelling and muscle spasms, easing discomfort for conditions like arthritis, fibromyalgia, and chronic back pain.
The therapy can also promote muscle relaxation, which helps soothe tension and stress. Improved circulation supports overall cardiovascular health and helps deliver oxygen and nutrients to tissues more efficiently. This enhanced blood flow may also aid in wound healing by stimulating cell growth and collagen production.
FIR therapy may contribute to detoxification by increasing sweat production, which can help eliminate heavy metals, chemicals, and other impurities from the body. It can also boost the immune system by stimulating the production of white blood cells. Additionally, it may offer metabolic support, with observations of improved fasting blood sugar levels and increased calorie burning.
Safe Use and Precautions
When considering far infrared therapy, it is important to follow safe use guidelines. Session durations typically range from 15 to 30 minutes; start with shorter sessions to allow the body to adapt. Adequate hydration before and after sessions is also important, as sweating can lead to fluid loss.
There are specific precautions and contraindications where FIR therapy might not be suitable. Consult a healthcare professional before use if you have:
Pregnancy, due to potential risks from increased core body temperature.
Heart conditions, such as advanced symptomatic heart disease, due to potential for increased heart rate and blood pressure.
Impaired thermal sensation, certain skin conditions like dermatitis or eczema, or metal implants.
Acute injuries, fever, or the presence of tumors.
Always consult with a healthcare professional before starting any new therapy, especially if you have existing medical conditions or are taking prescription medications, as some drugs, like corticosteroids, might interact with infrared heat.