Essentials: Using Light to Optimize Health

Huberman Lab

Scicomm Media

Science, Life Sciences, Health & Fitness

4.8 • 30.3K Ratings

🗓️ 26 February 2026

⏱️ 42 minutes

🔗️ Recording | iTunes | RSS

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Summary

In this Huberman Lab Essentials episode, I explore how different wavelengths of light affect the human body and how light exposure can improve sleep quality, mood and daytime alertness while supporting healthy hormone regulation. I also discuss the therapeutic use of ultraviolet and infrared/red light for a wide variety of benefits, including improved skin health and offsetting age-related vision loss. I explain the biological mechanisms behind these light-based therapies and offer practical tools that listeners can use to improve both their mental and physical well-being. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman ROKA: https://roka.com/huberman Function: https://functionhealth.com/huberman Timestamps (00:00:00) Light (00:00:47) Physics of Light (00:01:57) Light & Body, Rods & Cones, Skin, Seasons & Melatonin (00:05:01) Melatonin Supplements?, Tool: Seasonal Sun Exposure (00:08:32) Sponsor: ROKA (00:09:47) Tool: Melatonin Levels & Reduce Night Light (00:10:31) Light, UVB, Skin Exposure, Testosterone & Estrogen, Fertility (00:13:54) UVB Light & Improved Pain Tolerance (00:16:10) Tool: Daily Sunlight Exposure Protocol; Blue Blockers (00:18:25) Sponsor: AG1 (00:19:16) Seasonal Affective Disorder (SAD), Year-Round Sunlight Exposure (00:21:24) Enhanced Immune Function & UVB Light, Tool: Winter Light Exposure (00:23:45) Light, Wound Healing, Hair & Nail Growth (00:25:11) Tool: Mood, Dopamine & Avoid Nighttime UVB Light (00:27:46) Sponsor: Function (00:29:25) Red Light Therapy, Infrared Light, Acne, Wound Healing & Scars; Mitochondria (00:33:06) Offset Age-Related Eyesight Decline, Red Light (00:37:22) Tool: Red Light Protocol, Frequency & Timing (00:40:02) Red Light for Shift Workers (00:41:42) Recap Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	Welcome to Huberman Lab Essentials,
0:02.0	where we revisit past episodes
0:04.0	for the most potent and actionable science-based tools
0:07.0	for mental health, physical health, and performance.
0:10.0	I'm Andrew Huberman, and I'm a professor of neurobiology
0:14.0	and ophthalmology at Stanford School of Medicine.
0:17.0	Today we are going to discuss light
0:19.0	and the many powerful uses of light to optimize
0:22.4	our health. One of the reasons why light has such powerful effects on so many different aspects
0:27.2	of our biology is that it can be translated into electrical signals in our brain and body, into
0:33.8	hormone signals in our brain and body, and indeed into what we call
0:37.5	cascades of biological pathways,
0:40.0	meaning light can actually change the genes
0:43.0	that the cells of your bodies express.
0:45.2	And that is true throughout the lifespan.
0:47.7	Light is electromagnetic energy.
0:50.2	It can cause reactions in cells of your body.
0:53.7	It can cause reactions in fruit, for instance, right?
0:56.6	You see a piece of fruit and it's not ripe,
0:58.9	but it gets a lot of sunlight and it ripens.
1:00.6	That's because the electromagnetic energy of sunlight
1:03.8	had an impact on that plant or that tree
	...

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