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Huberman LabDec 1, 2025

Using Red Light to Improve Metabolism & the Harmful Effects of LEDs | Dr. Glen Jeffery

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Dr. Glen Jeffery, PhD, is a professor of neuroscience at University College London and a leading expert on how different colors (wavelengths) of light impact cellular, organ and overall health. He explains that long-wavelength light (red, near-infrared and infrared) can enter the body and brain to enhance mitochondrial function and thereby improve metabolism, eyesight, blood glucose regulation, mood, hormones and more. We also discuss how short-wavelength light from LED bulbs can impair mitochondrial health and why balanced, full-spectrum light is essential for health. Dr. Jeffery shares simple yet powerful ways to use natural and artificial light sources to enhance your metabolic function, eyesight and longevity. Sponsors AG1: https://drinkag1.com/huberman Wealthfront*: https://wealthfront.com/huberman Joovv: https://joovv.com/huberman Rorra: https://rorra.com/huberman Function: https://functionhealth.com/huberman Timestamps 00:00 Glen Jeffery 03:12 Light, Ultraviolet (UV), Visible & Infrared (IR) Light 06:25 Light's Impact on the Body & Light, Sunburn, Cataracts 09:55 UV Light, All-Cause Mortality, Skin Cancer 14:55
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