SCAM: Get the correct answers to your questions!
When do I need a more powerful laser? (not just more diodes but more wattage)
Well, it depends on if you want to use it for longer or a shorter time. It also depends on if you are treating something bone deep or just a finger that is not deep. If you need a diode with a band with that will deliver the frequency to 5cm, then you need a more powerful one. Lasers can start at 635 and all the way to 980nm in this range that doesn't heat. They can be 5mW one of the cold lasers that run on AA batteries up to 60,000mW. Some people can get away with LEDs even though a laser would work just as fine but overkill. Some people who have time to use the laser for 15 to 20 minutes can get by cheaper than getting one just as effective that takes 1 to 2 minutes. Some lasers get the body to hold the frequencies for longer while some types you have to treat more times per day. Some, the tingling lasts just a few hours and some minutes.
Do lasers change the tissues that it shines?
Yes and no. The lasers that do not produce heat don't and do not change the structure of the cell. Non-inhibiting lasers do. If you shine a laser on a piece of rare steak, and eat it, you can taste and feel the difference that just a few seconds causes. Non-inhibiting lasers work with frequencies in a different way than an inhibiting cold laser.
Do LEDs work as good as Lasers?
It's not that they are not better or worse. It's the power level of penetration of the frequencies it delivers. If you are going to use LEDs, make sure they are authentic violet type.
Will a cold laser help heal wounds faster?
These lasers can stimulate the growth cells in damaged tissues but if the diet is not good, where do you think the minerals and nutrients come from? CAN SOMEONE SAY THE MINERAL RESERVES IN THE HIPS, FEMURS, AND BACK? No wonder so many people have bad backs. It's a lack of minerals and I see this happening every day.
Is a cold laser good for inflammation of the joints?
This depends. If the inflammation is from an over acidic body when the joints get inflamed from the body trying to store acids to avoid being out of homeostasis, then the laser would be nothing more than a "bandaid" to the problem. If the inflammation is from a sports injury, that is a different story. Don't be a sucker and think the laser will be the cure all. If the body is trying to become inflamed from an over acidic body, using the laser will put the body out of homeostasis and further leach minerals from the bones. If the body needs to swell, let it! Don't fight it.
Do cold lasers shine through clothing?
Yes, they can but most reflect of the clothing and don't get absorbed into the body. An infused laser, for example, isn't dependent on the strength but the frequencies. As long as any of the light that carries the frequencies touches the body, it delivers. The light is only a carrier wave for the frequencies and has almost NOTHING to do with the laser itself. This is based on infused lasers. If considering the joules delivered, thats another story. A 30 watt laser through clothes might only be delivering 2 to 4 watts of energy after going through thick clothes.
Will a cold laser stimulate the nerve force?
Laser photon energy can make the nerve force speed up by bringing the "nerves that have
fallen asleep" back to life. But, don't let this fool you. If the body doesn't have enough minerals and flora in the first place, there is a reason the nerve force is slow. This is your body's signal that you need to usually do two things, restore gut flora with more aggressive organisms and/or eat more mineral rich foods.
Will a cold laser repair damaged cells?
When the photons are delivered to damaged cells, the cells absorb this energy and mitochondria are stimulated to produce more ATP. The increase in ATP accelerates the healing process by making a damaged cell to a more energetic, stable state. BUT, HERE IS THE PROBLEM. When those cells become healthy, they demand more nutrients and minerals since they are working harder and more alive. Now, if the body is not at the same level as these new lively cells, those new cells will eat up more minerals and nutrients from the body. AND GUESS WHAT HAPPENS IF YOU DON'T HAVE THE MINERAL RESERVES TO ACCOMMODATE THEM?
A word on LEDs (Light Emitting Diodes)
Light emitting diodes (LEDs) are not the same as laser diodes. Laser diodes produces a very specific frequency of light and most importantly the light is coherent. Coherent light has the unique property of all the light waves being in phase. As an analogy, think of the difference between a crowd of people walking in step with each other, as opposed to each at their own pace. Coherence causes the specking effect that is unique to laser light. This speckling is an interference pattern that results in well defined areas of high intensity and low intensity. The same interference occurs inside tissue, and the steep gradient between the areas of high and low brightness creates an electrical potential across the cells that is considered to be a probable mechanism by which laser therapy works to increase cellular activity and promote healing.
It is not yet fully understood why the body responds well to laser light. But that it does is undeniable, on the basis of clinical experience of tens of thousands of practitioners using this technology, and the amount of clinical trials. There is little evidence to support the notion that LED devices work the same. That is not to say that LED devices do not work. Many practitioners own and use LED-based light therapy devices and are pleased with the results. The general consensus is that while LED device may work, they do not work as well.
Many cold laser devices also include LEDs. Since the emitters which are most effective are laser diodes, be sure to understand how much of the specifications (regarding wavelength and power) comes from the laser diodes and how much from the LEDs. Only the laser contribution should be considered for product evaluation and comparison purposes.
Why are LED's included? For two reasons. Firstly, on pure infrared devices, red LEDs are included for safety and targeting. They light up at the same time as the infrared lasers to indicate where the infrared light is shining (since you cannot see it), and that they are emitting infrared light, helping to prevent accidental exposure and injury. Secondly, LED's are often included as filler to make a product appear more substantial. LED are inexpensive, and the circuitry require to drive them is simple. Laser diodes are comparatively much more expensive, require cooling, move complex support circuitry and calibration. Including a bunch of LEDs for good measure costs almost nothing. See my LED vs Laser page.
What to Look For When Considering the Purchase of a Therapeutic Laser
Laser Therapy: First it is important to know all therapeutic lasers will biostimulate tissue to a certain degree. It is even more important to know that the physics of the Laser therapy system will ultimately determine the lasers ability to penetrate and thus deliver the desired clinical outcome.
Design: The laser therapy system should be designed to meet the clinical outcomes expected from the system. If you are looking to treat deep seated pathologies like spinal stenosis, severe degenerative arthritis, chronic back pain, radiculopathy and sciatica, and peripheral neuropathy, then you will need a high power class iv laser typically greater than 10 watts of continuous power output per laser diode, especially when considering a dual wavelength laser purchase. Cold lasers do not put out more than 500 mw and are more designed to treat superficial conditions.
Penetration: In order to get penetration to deep seated pathologies there must be a high sustained power output on the skin. The duty cycle or time the laser is on is also important and a high duty cycle can inhibit therapeutic penetration because the energy flow or concentration is turned off when the laser switches off - depending on the duty cycle. Higher power continuous wave lasers will penetrate deeper as will higher power lasers typically over 15 watts that pulse, but maintain a high duty cycle, because the energy flow is pretty much delivered on a continual basis as a high duty cycle is still maintained.
If it looks too good to be true it usually is. Low power class iv lasers, especially those that pulse and have a high duty cycle equal to 50%, or those that are hand held are cheaper to produce. Once a laser puts out more than 10 watts the engineering required to keep it running becomes considerably more sophisticated and requires much more cooling to keep it from overheating. They also require sophisticated heat syncs and cooling systems to cool the laser diodes due to the high heat output and these type of lasers are packaged in considerably larger medical enclosures.
If there are any questions that I can answer that I don't have on my site, make contact.