Hubermanlong wavelength light is the key
Sunlight is full spectrum, and Huberman says the long wavelength part, red and near-infrared, is what you want — while UV is the part to limit.Huberman says sunlight's long wavelength part is what you want. UV is the part to limit.
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Key takeaways
- Huberman says sunlight is full spectrum — UV, short, medium and long wavelength — and that the long wavelength end is the part that does the work.
- He says you need some UV for vitamin D, but too much damages skin and accelerates aging.
- He cites positive findings for long wavelength light in recovery from surgery and illness, respiratory infections, skin, eyes, and longevity.
- He says you don't need special equipment — in addition to sunlight, a red incandescent light and a red LED put out long wavelength light.
In their words
“The long wavelength light turns out to be the key. Sunlight is full spectrum.”
“Recovery from surgery, recovery from illness, staving off illness… skin health, eye health, longevity is get that long wavelength light.”
“So, we're going to hear about supplementing with long wavelength light. ... Immensely beneficial also for mental health and for physical health.”
Context
Andrew Huberman, a Stanford neuroscientist and host of Huberman Lab, joined Megyn Kelly to discuss his book Protocols. About an hour and eighteen minutes in, he broke sunlight into its parts — UV, short, medium and long wavelength — and argued that the long-wavelength end is the part that does the work, while UV is the part to limit. He returns to the same point a couple of minutes later with a list of what the research has looked at.
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Updated Sep 28, 2026