The free companion guide 14 pages

Fix Your Light Environment

Whole-food light vs. processed light, and how to rebuild a light environment that actually heals.

Companion to the healthy vs. harmful light video with Tristan Scott.

Paul Saladino standing on a beach at sunrise, facing the low sun
“This is an issue on the same level as asbestos. This is a public health issue, and it's big.”
Dr Glen Jeffery, Professor of Neuroscience, UCL, on the Huberman Lab podcast, “Using Red Light to Improve Your Health & the Harmful Effects of LEDs,” December 2025.
Inside the guide

What you'll get

01

The spectrum chart

Seven common light sources measured side by side, so you can see exactly which ones reach into infrared and which ones stop dead at red.

02

What your windows are doing

Why low-emissivity glass strips 91% of the infrared at 850 nm, and why sitting by a sunny window still leaves you short.

03

What to use instead

The four whole-food light sources, ranked by when to use them: daytime indoor default, evening wind-down, and the one bulb for right before bed.

04

The by-day, by-night protocol

How to get the infrared back during daylight, and what to switch the house over to after dinner. Includes why dimmable bulbs make flicker worse.

05

De-blue your screens

The exact tap-by-tap settings for iPhone and Mac to strip the 460 nm blue, plus what a tint can't fix.

06

Your light kit and the 10-minute audit

What to buy, what to avoid, and an eight-item walkthrough of your house you can finish this afternoon.

The links from page 12

Build your light kit

The guide sends you here for the bulb links. Here they are, along with the flicker-free device from the video and what to grab at the hardware store.

After dinner

Amber and deep-amber incandescent

What the house switches over to once the sun goes down. Daylight Labs makes the deep-amber incandescents used in the video.

Daylight Labs bulbs
Daytime and pre-bed

Clear filament and red incandescent

Your indoor default during the day, and the one bulb to keep by the bed. Both sit on the shelf at any hardware store. The red ones are sold as lizard lamps, over with the reptile supplies.

Any hardware store
For screens after dark

A flicker-free, blue-light-free device

For the reading and work you'd otherwise do on a lit screen at night. The DC-1 is the tablet used in the video.

Daylight DC-1
Who took the readings

Tristan Scott

Tristan researches light and EMF. He's the one Paul made the healthy vs. harmful light video with, and every spectrum reading in the guide came out of that session. He posts his own measurements on both channels.

Instagram → YouTube →

No affiliation. These are the tools used in the video.

Dr. Paul Saladino, MD

Dr. Paul Saladino, MD

Board-certified physician and a leading voice in ancestral health, reaching millions through YouTube, Instagram, and his weekly newsletter. This guide is the companion to his healthy vs. harmful light video with Tristan Scott, where every reading you see here was measured on camera.

5M+Across YouTube, IG, X & newsletter
Board-certifiedMD
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Free · 14 pages

What are you feeding your biology?

Light is food. There's processed light (LEDs and screens) and there's whole-food light: sun, fire, candle, incandescent. Better light means better sleep, better hormones, better everything. Start today.