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We’ve discussed the power of red light therapy reseaarch in this newsletter before.

But today, I’m going to specifically talk about using red light to improve testosterone and testicular function.

Light, especially sunlight, stimulates various processes in the body, and we’ve known that for a while.

UV light from the sun or other sources, for example, can stimulate the production of vitamin D in the body.

But too much light isn’t good either.

That means that you can see benefits up to a certain point, but then they level off.

Or it can become detrimental instead.

Think of how UV Light will stop being beneficial and cause a sunburn, or worse.

You’ve probably experienced this yourself, right?

But today we’re not talking about UV light.

I think it’s dangerous to play with UV — other than spending time in the sun which is WONDERFUL.

Instead, today we’re going to talk about red light therapy benefits.

It’s important to note that light has both local and systemic effects.

So light does not have to be focused only on the local area that you want to treat.

Exposing one area of the body can benefit your entire body, or system.

For instance, if you focus light on your neck, you may benefit your prostate or testicles.
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But focusing the light WHERE you want it has an even greater positive effect.

For red and infrared light, both the systemic and local effects can stimulate testosterone.

AND, they act both indirectly and directly.

It’s help from every direction!

First, studies like this one show that red light improves thyroid function.

The researchers exposed these mice to red light on their thyroid. 

The thyroid sits on your neck, wrapped around both sides near your Adam’s apple.

These findings are great news.

We know that we want better thyroid function from other newsletters.

And better thyroid function can lead to high testosterone levels.

Now, we know that higher thyroid levels improve metabolism.

And then better overall metabolism leads to better functioning of specific parts of the body as well.

But red light can also stimulate testosterone locally.

If you shine red light directly on the testicles, it improves testosterone. 

Even better!

In this study, researchers used 670nm red light or 808nm infrared light on rat’s testicles.

And then they compared these rats to controls.

The rats receiving infrared and red light had 32% and 564% higher testosterone respectively!

This is when compared to controls on the fourth day of treatment.

However, that wasn’t the complete story.

There were negatives to the results.

The rats that received infrared light on their testicles had testicular tissue that was “irregularly arranged following irradiation.”

It’s unclear from the study what exactly caused this damage to the tissue.

It could have been the infrared wavelength, the dose of the light, or heat generated from the dose.

It may also have been a combination of all three.

Regardless of the cause, all three of these can be avoided when using light therapy on the testicles.

And you’ll want to keep these issues in mind if you choose to try light therapy.

Here’s how to use light therapy to increase your testosterone and still avoid these problems.

First, use only red light in the wavelengths of 600-700nm, and avoid infrared.

Red light probably better than infrared.

So I’d go with 670nm light which is visible light.

The infrared light is IN-visible, but it’s still light (it appears on a camera or your phone but not to the human eye.)

Second, limit the time of exposure.

It depends on the device you use, but five to ten minutes should work.

Third, limit exposure to light sources like LEDs that don’t give off excess heat.

Lastly, if you’d like to experiment with longer doses of light, shine it on other parts of your body for systemic effects.

So if someone asks you, “does light therapy work?” you’ll be able to tell them your experiences.

Be careful though!

And when in doubt, talk to your doctor.

Red light is powerful stuff!

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Matt Cook is editor-in-chief of Daily Medical Discoveries. Matt has been a full time health researcher for 26 years. ABC News interviewed Matt on sexual health issues not long ago. Matt is widely quoted on over 1,000,000 websites. He has over 300,000 daily newsletter readers. Daily Medical Discoveries finds hidden, buried or ignored medical studies through the lens of 100 years of proven science. Matt heads up the editorial team of scientists and health researchers. Each discovery is based upon primary studies from peer reviewed science sources following the Daily Medical Discoveries 7 Step Process to ensure accuracy.