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The Problem with Most Devices on the Market Now that you understand the importance of the power density of the light, here’s the big problem with most lights on the market. Most devices being sold (that you might pay $100-$900 for) are: 1. Grossly underpowered and simply too low wattage to reach therapeutic power densities of above 50mW/cm2 with large coverage of body areas. This is especially problematic for treating deep tissues. So you’d end up having to use the light for extended periods (sometimes upwards of 20- 40 minutes) to generate an effect. Moreover, the weaker lights won’t penetrate deeply into the body and to even treat any deeper issues, even with extended exposure times. 2. Very small, and thus, only treat a small area of your body. Even if a small light has optimal power density, a small light that radiates light on only 5-10 square inches will require multiple treatments to cover a significant portion of your body. (Note: This is a major limitation with small LED devices.) If I can give one piece of advice on which light to get, it’s this: Get a high-power light that reaches therapeutic power outputs, and is big enough to cover a significant portion of your body. Take it from someone who has wasted over $10,000 on underpowered red light devices (that now are just junk in my garage). I bought them before I understood everything I just explained to you about power density, dose, and how much of the body is being illuminated, thinking that just because the light was “red” that it would provide all the benefits. Nope. I will tell you right now that 99% of the red light therapy products being sold in major outlets online are a waste of money. So please be aware of the power output and size of the light you’re interested in. Not understanding those two factors caused me to waste a huge amount of money on ineffective and time- consuming lights. I’ve given you all the information you need to know if a light will work or not. So if you have any interest in lights others than the devices I recommend, I suggest making sure to closely examine the wattage, wavelength, and size and do the calculations to see for yourself whether a light is quality or not. I urge you: Don’t waste your money like I did! Why You Should Get a High-Power Device One might ask the question: “Do I really need a high-power device? Couldn’t I just get a cheap low-power device and then increase the length of time I use it to get up to the recommended doses?” An alternative but similar question is: “Do I really need a large device? Couldn’t I just get a small device and then just treat each area of my body separately for a few minutes – e.g. 5 minutes on my left knee, then 5 minutes on my right knee, then 5 minutes on the left cheek, and 5 minutes on the right cheek, etc.?” This are good questions, and it’s important to understand the answers to them. Here’s why low-power devices and small devices are a problem (even if you were to increase the length of time you use it): 1. Penetration Depth: Let’s take two lights of equal size, but one light is 50W and the other is 100W. Theoretically, you could use the 50W light for twice as long (let’s say 10 minutes instead of 5 minutes) and reach the same dose. And on paper, based on the simple math, this is indeed the case. But here’s the problem: More powerful lights penetrate more deeply into the body. They deliver more overall light deeper into the body. So if you’re trying to reach deep tissues, you may use the weaker light device for 5 or 10 times longer (than the morePDF Image | Red Light Therapy Ultimate Guide
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