The therapeutic physiological advantages derived from controlled exposure to light within the infrared spectrum, specifically referring to both near-infrared (NIR) and far-infrared (FIR) wavelengths. These benefits are primarily mediated through non-thermal or mild thermal effects on cellular metabolism, tissue repair, and systemic circulation. Clinically, this modality is utilized for pain management, wound healing, and promoting mitochondrial function.
Origin
The concept originates from photobiomodulation (PBM) research, which studies the non-ionizing light interaction with biological tissue. Infrared light is an extension of the visible light spectrum, and its therapeutic use has historical roots, though modern understanding is based on cellular biology. The term “benefits” reflects the observed clinical outcomes from controlled exposure protocols.
Mechanism
Near-infrared light penetrates tissues to stimulate cytochrome c oxidase within the mitochondria, increasing ATP production and reducing oxidative stress, which enhances cellular repair and function. Far-infrared light, absorbed primarily by water molecules, generates mild heat that promotes vasodilation, improving blood circulation and facilitating the removal of metabolic waste. These systemic improvements can indirectly support hormonal balance by reducing inflammation and improving tissue oxygenation.
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