How Does Red Light Therapy Work?
The human body needs light. Without sunlight, we would become dangerously deficient in vitamin D—not to mention all the other physiological and emotional challenges we would face.
Natural sunlight is a combination of the entire visible light spectrum (400-700 nm) as well as ultraviolet (UV; 300-400 nm) and infrared (700-1000 nm) light. Most people are well aware of the potential dangers of too much sunlight due to damaging UV rays. However, the body has specific positive responses to light in the 600-900 nm wavelength range, also called the “therapeutic window”.
This light energy can pass through human tissue much easier than other wavelengths. Specifically, light in the mid-600 nm and mid-800 nm range has been shown to provide optimal biological responses. This energy is absorbed by the body and stimulates adenosine triphosphate (ATP), the mode of chemical energy transportation at the cellular level. In other words, cells that receive this rejuvenating, anti-aging energy boost are able to perform their natural functions at a heightened level.
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