Blue Light Kills MRSA Superbug
Blue (470nm) light kills MRSA (Methicillin-Resistant Staphylococcus areus) in Vitro
In this study, an average of 90.4% of both US-300 (community acquired) and IS-853 (hospital acquired) strains of MRSA were killed within minutes of exposure to simple blue light. This should be all over the national and world news. Why isn’t it? Maybe people don’t know what it means. Here is what the study said,
“These significant levels of photo-destruction at low dosages indicate that irradiation with 470nm LED light energy may be a practical, inexpensive alternative to treatment with pharmacological agents, particularly in cases involving cutaneous and subcutanious MRSA infections that are susceptible to non-invasive types of radiation.”
Here’s what it means:
“significant levels of photo-destruction” – an average of 90.4% of MRSA bacteria experienced ‘death by light.’
“low dosages” – simple light was used, not low level laser light, not laser light, and it only took a few minutes of exposure to kill significant amounts of bacteria – 30% dying after just 100 seconds of exposure.
“irradiation” – Light shining on something. Light of any color from any source is actually powerful electromagnetic energy, or radiation, and so light of any color can also be called “radiation.” When you shine any light on something, its being irradiated. It’s not as dangerous or expensive as it sounds. These two girls survive by daily high doses of 405-485nm (blue) ”irradiation.”
“470nm” – blue. That’s it. Click here for a more detailed explanation. A previous study was done with similar results with 405nm light, which is visible violet light, very close to UVA on the electromagnetic spectrum. The actual span of the light used in this case was 455-485nm. Since 405nm also worked, it stands to reason that all wavelengths from 405 through 485 would have the same effect. That is blue light, period.
“LED light energy” – as touched on above, all light is energy, the source does not matter. In this case, SLDs (superluminous diodes) were used, which are just the latest advancement in LED lighting – nothing special. LEDs are commonly used in medical research because they largely eliminate the factor of heat. Any blue light source that peaked around 470nm should have produced the same results.
“practical, inexpensive alternative to treatment with pharmacological agents” – easier and cheaper than drugs. They did not mention it’s also 100% natural, having no adverse side effects reported, non-invaisive, painless, simply administered at home… and it’s worth double mention – easy to obtain, easy to use, and very cheap.
“cases involving cutaneous and subcutanious MRSA infections that are susceptible to non-invasive types of radiation.” – cases of MRSA infections on and just beneath the surface of the skin, where the light is able to penetrate naturally.
So, to sum up:
Since simple blue light killed an average of 90% of MRSA bacteria in the lab, it may turn out to be a practical, inexpensive alternative to treatment with drugs for cases of MRSA infections of or just under the skin in humans.
I would not wait for further studies, FDA approval, or fancy marketing before I tried this out on myself or a loved one battling a MRSA infection on or just under the skin.
The antibacterial properties of blue light have been known for quite some time – in fact the FDA approved blue light to kill acne bacteria in 2002. There are many Acne Treatment Lights already available and in use today containing the same wavelengths used to kill MRSA, it would be very simple for them to be re-purposed immediately in the case of a MRSA infection of the skin not responding to antibiotics. It would also be good to have one of these lights around to disinfect everyday cuts, burns and bites as a matter of MRSA prevention.
Here are the two least expensive lights I know of proven to contain the wavelengths used in the blue light MRSA study, without UV.
GE Dichro-Color Blue – $25.00 – spans 400nm-485nm, peaks near 470nm
enLux Blue R30 LED Floodlight $89.95 – spans 460nm-485nm, peaks near 470nm.
A Google search of “acne lights” will reveal more. Any blue light emitting wavelengths between 405nm and 485nm should have the same effect. Those near the 405nm range, such as 415nm, may have some UVA, however, when faced with an antibiotic resistant MRSA infection, this is fairly insignificant.
Our own LightWave AB™ (Antibacterial) $199.95, is now available online. It peaks both at 405nm and 470nm and does contain some UVA as part of the natural spectrum of the 405nm light.
More Blue Light MRSA studies:
Visible 405 nm SLD light photo-destroys methicillin-resistant Staphylococcus aureus (MRSA) in vitro
Blue 470-nm light kills methicillin-resistant Staphylococcus aureus (MRSA) in vitro.
In vitro bactericidal effects of 405-nm and 470-nm blue light.
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Important: I am not a doctor. Light Therapy Options.com is not making any medical claims. This website offers information so that you can choose to act upon this information at your own discretion. The products that may be mentioned are not intended to treat, cure or prevent any disease. You should not consider information or equipment provided by this website to be the practice of medicine or to replace consultation with a dermatologist, physician or other medical practitioner.

