Red and near-infrared light (NIR) within specific wavelength ranges has shown potential in supporting metabolic health, especially glucose regulation. Based on current research, the most effective wavelengths fall into two primary zones:
660–670 nm (Red Light):
This range penetrates the upper layers of the skin and is often used in clinical and wellness settings for metabolic support. The widely cited UCL pilot study that showed a ~30% reduction in blood sugar spikes used a 670 nm light panel applied to the upper back.
810–850 nm (Near-Infrared Light):
These longer wavelengths penetrate deeper into tissues—including muscles—and are especially useful for targeting mitochondrial function, circulation, and systemic glucose metabolism. Some studies involving diabetic patients used 830 nm, with promising results.
🔬 Both ranges work by stimulating cytochrome c oxidase, enhancing ATP production, and activating insulin-mimicking pathways that help shuttle glucose into cells more efficiently.
✅ For best results, many experts recommend dual-spectrum devices that include both red (660–670 nm) and NIR (810–850 nm) LEDs. This broader wavelength coverage supports both surface-level and deeper tissue effects—offering more comprehensive metabolic benefits.
