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1

Human Vision

The human eye sees a small slice of the total light spectrum.

The sun produces energy across an extremely broad spectrum. The tiny portion the human eye can see is referred to as visible light.

What about the rest of the spectrum that the human eye cannot detect — the frequencies that are invisible?

Those are still light. The invisible wavelengths are just too small or large to see.

Just smaller than the visible spectrum is the invisible UV spectrum. If UV light were any larger in frequency, it would be blue light, and it would be visible.

Just larger than red light is infrared light — which is also invisible. If infrared waves were any shorter, they’d be red, and we’d be able to see them.

All visible light is perceived as a color by the human brain.

The Visible Spectrum

In physics, every time a frequency doubles, it’s referred to as an octave.

In music, the major scale covers one octave.

A grand piano has 8 octaves.

By comparison, the electromagnetic spectrum has 81 octaves.

Visible light is only one of these 81 octaves — essentially one major scale on an incredibly large piano.

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2

Simplify

Think of light as three main parts — each affecting health.

For general thinking healthy light, ignore the X-rays, gamma rays, microwaves, and radio waves.

Instead, focus on the most important spectrums of light — which greatly impact health on a daily basis:

• UV
• Visible
• Infrared

4

Infrared + red light

InfraRED

When the sun’s red and infrared output are added together, they make up a whopping 68% of total sunshine.

This means that more than 2/3 of sunlight is restorative infrared and red light frequencies.

68% of sunlight is infrared & red.

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5

Red & Infrared Light

…have incredible health benefits

The NASA ‘HEALS’ Light Uses Red & Infrared Light

“The innovation of the NASA HEALS technology provides the equivalent light energy of 12 suns from each of the 288 LED chips.”

— NASA

For decades, researchers thought therapeutic lasers — which produced significant results for pain, inflammation, healing, smoking cessation and even hair regrowth — were effective because they were using lasers.

However, it wasn’t the laser aspect that provided the healing effects. By the mid-90s, it was clear that the (red & infrared) wavelengths of light themselves — not the laser aspect — were responsible for the successful findings.

Thus, the study of “low-level laser therapy” became the study of “photobiomodulation” (the study of how light affects changes in the body).

LEDs became the technology of choice because they can deliver specific wavelengths to bodily tissues.

Virtually Every Wavelength Has Been Studied

The most impressive results come from the frequencies found in visible red light (around 660nm) and “near infrared” frequencies (around 880nm).

ALL wavelengths of red & infrared light provide deep benefits.

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8

Red & Infrared: A Comparison

Infrared Means “Beyond Red”

Infrared wavelengths are too long for our eyes to observe.

Infrared light is invisible, but we can actually FEEL it.

Infrared light is felt as heat.

How?

Heat is infrared light.

(Always)

Humans can see light — and also feel light.

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9

All Light Penetrates Into The Body

Tissue Penetration Depends On The Wavelength

The longer the wavelength, the deeper the light penetrates into tissues.

Blue light barely penetrates at all, just 2-4 millimeters.

Red light penetrates several inches into the flesh.

Infrared can penetrate deeply into the body, nourishing even the inner organs.

Penetration Depth In Human Tissue

(Blue vs Red vs Infrared)

Infrared Rays Penetrate Deepest

Infrared light travels in a straight line, just as all light does.

This deep penetration into the body allows infrared therapy to affect all tissues and organs in the body.

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12

Modern People, Always Inside

The average American spends 93% of their life indoors, with another 6% in automobiles.

— Environmental Protection Agency, 2001

99% Indoors

Fifteen minutes. That’s how long the average American spends outside each day.

What are the health implications of spending nearly all time indoors? There’s a serious air quality threat (on average, indoor pollutants are 5 times worse than outdoor air, but are often 100 times worse), for sure. But there’s a lack of healthy spectrums of light.

What are the missing frequencies in modern life? Red and infrared.

For many, artificial lighting is the only lighting.

Most people get very, very little sunshine.

Infrared & red light are absent in modern life.

The Stats For The Average American

93% indoors
+ 6% in automobiles 
= 99% of life spent indoors.

On average, 99% of modern life is spent indoors.

And Near Fire…

Most modern people receive very little red & infrared light.

“Penetrating red light is possibly the fundamental anti-stress factor for all organisms. The chronic deficiency of such light is, I think, the best explanation for the deterioration which occurs with aging.”

— Ray Peat, PhD

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What Light Can Do

Red and infrared light has been a major player in the health of thousands of people worldwide. The trend is rising. Professional athletes are using red light to improve recovery after both exercise and injuries. Hair is being (expensively) regrown with simple technology avilable on Amazon.

Light therapy is resulting in better sleep, energy levels, pain perception, workouts, post-exercise and post-surgery recovery, mood, digestion, gut health, and better skin.

To know how light can improve health — and harm it — needs to be at the forefront of any health strategy.

This completes the Introduction.
To continue, select InfraRED.

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