Among the earliest recorded healing modalities Solar therapy was first used by Egyptians and forms of light therapy were also practiced by ancient Greeks, Chinese and Indians.
There's no question that light exerts biological effects : in fact the body needs light to be healthy.
Recent clinical studies are now establishing how different wavelenghts of light affect the body at a cellular level. They discovered that RED, BLUE and INFRARED light that falls within the wavelength range of 480-850 nanometers (nm) is extremely beneficial, and often refered to as the "therapeutic window". These wavelengths of light are bioactive in humans, which mean they have a biological effect on the body like antibiotics or vitamins and affects the function of our cells.
LED light therapy devices, such as offered by only certain companies, harness the regenerative healing of red light wavelengths without the more problematic UVA and UVB light rays that can cause skin cancer and premature aging.
A 2013 study of 41 males ages 18 to 49 found that red light therapy treatment provided a 39% increase in hair growth over a period of 16 weeks.
According to a 2014 study, low-level light therapy such as red light therapy appeared to be safe and effective for hair growth in both men and women.
Red light and near-infrared light therapies have shown to be effective for a huge number of biological phenomenon and medical treatments. They suggest that these therapies help to manage numerous of skin conditions such as cellulites, acne, wounds, wrinkles, scars and other skin lesions. These lights penetrate the skin deeply enough to creatw a little damage to the upper layers of the skin, and this triggers the sebaceous gland and stem cells. The top layers of the skin are basically burned off by a very low level of burn, this stimulates new cells regeneration and so helping the lesion and restoring skin cells with healthy ones.
Red light therapy treatment has been regarded as part of a healthy and balanced lifestyle because of its ability to effectively enhance cellular function by improving circulation in the body. Various studies have shown that proper circulation ensures that the body tissues receive enough oxygen as well as other nutrients crucial for healing. Besides healthy circulation, red light therapy also helps the circulatory system and the body to get rid of toxic byproducts
A systemic review of multiple studies also concluded that red light therapy effectively improves muscle recovery.
One mechanism of red light therapy that may affect muscle recovery is its ability to increase blood circulation and oxygenation of tissues. This can contribute to quicker healing from muscle fatigue after workouts.
Red light therapy can offer chronic pain relief, without the use of drugs and with zero side effects. It’s been shown to relieve pain, reduce inflammation, and more.
The absorption of red/near-infrared light energy, a process termed "photobiomodulation," enhances mitochondrial ATP production. This ATP is a nucleotide that provides energy to drive and support many processes in living cells such as muscle contraction or nerve impulse propagation for instance. It is know as "the energy currency of life".
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