Say YES to NO!

The effects of light therapy on nitric oxide (NO)

Nitric Oxide:  it’s a gas!


In 1992 Nitric Oxide was proclaimed  “molecule of the year by the American Association for the Advancement of Science.  By 1998 its physiological importance garnered a Nobel Prize for the scientists who discovered it as a key molecule in the cardiovascular system which helps keep blood vessels healthy and regulate blood pressure.  Since then, nitric oxide has also been found to be essential to the immune system and to the nervous system (including the brain) as well as integral with many chronic health conditions and diseases, such as chronic inflammation, erectile dysfunction, and cancer. This has led researchers to focus on nitric oxide as a potential target for medical therapies.

How does Light Therapy work with Nitric Oxide?

Simply put, a series of metabolic events occur with the releasing of nitric oxide when a light therapy device, such as TrueLight emits 630nm, 660nm, and 850nm light wavelengths, which are easily absorbed by hemoglobin in the bloodstream and other body tissue.

This release of nitric oxide dilates blood vessels and allows for greater cellular energy production. The result is in increased cellular activity that can promote healing, muscle recovery, and tissue strengthening.

Pictured below are the results from a nitric oxide test performed on a test subject before using the TrueLight Energy Square. The test strip on the left of the picture shows that the subject’s nitric oxide levels are depleted, demonstrating low levels of nitric oxide in the blood stream. The test strip on the right shows the increase in nitric oxide to an optimal level  after having utilized the TrueLight Energy Square. This demonstrates dramatically increased levels of nitric oxide in the test subject’s blood stream, after only 20 minutes of TrueLight use.

How is Nitric Oxide good for you?

Your endothelium is tissue that forms a single layer of cells lining various organs and cavities of the body, especially the blood vessels, heart, and lymphatic vessels. When it senses heart-healthy conditions, such as physical activity and low cholesterol, it releases more nitric oxide. That’s a very good thing. Nitric oxide expands the blood vessels, increasing blood flow and decreasing plaque growth and blood clotting.

Photo Credit: ReNue Health

Why not just take Nitric Oxide supplements?

Nitric oxide supplements do not actually provide nitric oxide, which is a gas. Instead, they generally contain L-arginine which can, in some people, increase nitric oxide.  Nitric oxide, in turn, potentially increases blood flow to muscles and other organs. In trained athletes the supplements appear to do very little.  Your best bet at achieving increased nitric oxide levels is through the use of a red-light therapy device and these additional tips:

5 Other Ways to Increase Nitric Oxide Naturally:

  1.   Eat Vegetables High in Nitrates. Nitrate, a compound found in certain vegetables, is one of the many reasons vegetables are healthy for you. Leafy green veggies tend to be highest in nitric oxide.
  2.   Increase Your Intake of Antioxidants.
  3.   Limit Your Use of Antibacterial Mouthwash.
  4.   Get Your Blood Flowing with Exercise.
  5.  Do not smoke or “vape” as this impairs nitric oxide function in the body.
Photo Credit: The Truth About Cancer

For further reading about nitric oxide featured in scientific studies:

  1. Red/NIR Facilitates Nitric Oxide Release Study (2013)
  2. Mechanisms of Low-Level Light Therapy (2013)
  3. LLLT on muscle Tissue:  Performance/Fatigue/Repair Study (2012)

Bottom Line:

An optimal way to easily maintain a healthy nitric oxide level and keep blood vessels healthy is to utilize the TrueLight Energy Square at least three times a week, 20 minutes a day. This easily fits into your daily routine since it works anywhere on your body. You can put your feet on it at your desk, put it behind your back at your desk chair or while sitting on your couch.  Additionally, eat a varied plant-based diet. Exercising regularly also helps enhance nitric oxide generation. This is one way a heart-healthy diet and exercise help improve cardiovascular health as well as health in general.


  1. ReNue Health:
  2. The Truth About Cancer:

Junk Light, Disrupted Sleep, and Your Health

Exposure melatonin disrupting junk light can have have effects on many aspects of your health

Sleep cycle disruption

Junk light exposure when traveling can disrupt your circadian rhythm. Long-term exposure to light at night which accompanies shift work is listed as a probable carcinogen by the World Health Organization. Light at night has shown to be highly associated with significantly the risk of hormone specific such as cancers of the breast and prostate.


The flickering wavelength of light associated with LEDs and compact fluorescent lights emit blue light that inhibits melatonin production but also create a unique glare that impacts your retina causing eye strain, headaches, and physical and mental fatigue.

Weight Gain

Red light and darkness move leptin and ghrelin into patterns that are (context dependent) associated with less hunger, while blue light does the opposite and can move both into patterns associated with more hunger.

Anxiety/Depression & Depression

Increase in cortisol, the stress hormone, due to circadian disruption. Memory recall is impaired with consistent sleep deprivation and may leave you distracted and not performing your absolute best.

The Importance of Melanopsin Cells

The Key to Better Sleep

detects blue light

The melanopsin cells detect blue light it tells your brain that it is “daytime” and less melatonin is produced.

sending signals to your brain

The signals to your brain to alert brightness and for the brain to increase or suppress the sleep hormone, melatonin.

Light Source

Melanopsin cells can’t differentiate the blue light that occurs naturally form the sun from the junk light emitted from your computer monitor.

Start Optimizing Your Life

Harness Your Biology to Fight Junk Light

Your body requires some blue light at the right time of day and from the right sources. That’s why we created TrueDark® Sleep Technology that gives you 24-protection from junk light day and night.

Use TrueDark® Twilights When You’re Ready for Sleep

Stop Junk Light with TrueDark® Twilights technology that frees your hormones and neurotransmitters to do their best work.

When the sun goes down, blue light isn’t the only junk light that can disrupt our sleep cycle and more than blue blockers are needed. TrueDark® Twilights is the first and only solution that is designed to work with melanopsin, a protein in your eyes responsible for absorbing light and sending sleep/wake signals to your brain. Without melanopsin, melatonin can’t be accessed.

When you wear your Twilights for as little as 30 min before bed you prevent your melanopsin from detecting the wrong wavelengths of light at the wrong time of day. This supports  your circadian rhythm and helps you fall asleep faster and get more restorative and restful sleep.

glasses to help with computer eye strain computer glasses

TrueDark® Daylights for Your Waking Hours

The highly advanced lenses in TrueDark® Daylights operate on a more advanced level than traditional blue blockers.

Blue light emitted from the sun helps regulate our sleep/wake cycle. However, in today’s world, we’re exposed to an overabundance of blue light, or junk light from artificial light. This includes hours spent in front of  TVs, phones, and computers. It also includes time spent in artificial man made light with LEDs and fluorescent lights. Even if we’re simply reading a book, we’re doing that in artificial light which emit dramatically more blue light than the sun. That overexposure to junk light during the day has a dramatic impact on our neurotransmitters and hormones that are responsible for quality sleep.

The Only 24-hour Solution for Your Eyes

Increase Your Mental and Physical Performance

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