NEUROLOGY

Protecting Your Brain from Dementia, Concussions, and Long Covid with High-Energy Lasers

November 1 2025 Kirk Gair
NEUROLOGY
Protecting Your Brain from Dementia, Concussions, and Long Covid with High-Energy Lasers
November 1 2025 Kirk Gair

Protecting Your Brain from Dementia, Concussions, and Long Covid with High-Energy Lasers

OVER 40,000 CHIROPRACTORS READ EACH EDITION OF The American Chiropractor. According to a 2022 study in the Journal of the American Medical Association, if you live to 67, nearly half of you reading this article will die with dementia.1 Which group do you want to be in?

The study showed dementia rates increased from 34.7% in 2007 to 47.2% by 2017. After COVID-19 infections or mRNA vaccinations, the rates are probably even higher now because of the effects of the spike protein on the brain.

If you have a history of concussions, have family members who had dementia, or have two copies of the APOE4 gene,2 among other factors, you have an increased risk.

The Impact of the COVID-19 Infection and mRNA Vaccination on the Brain

I got COVID-19 near the end of 2019 when they thought it wasn’t here yet. I used my violet, green, and red lasers to support my mitochondria (a common site of dysfunction due to the spike protein)3 and immune system. A study in 2020 showed that using a 405 mn violet laser below 5 mw was effective versus COVID-19.4

The authors emphatically stated that it is critical that when a high-electron-volt wavelength like violet is used (violet has an eV of 3.1, double the energy of IR wavelengths), you use low power to prevent damage to tissues. Different rules apply to high-energy visible wavelengths than to the low eV energy infrared lasers common in class 4 laser therapy. Thankfully, it worked, and I recovered.

I was not prepared for the chronic loss of smell and taste and massive brain fog I had for the next several months. I played college football and have had some serious concussions, and I have family members who had dementia. The degree of my brain fog was scary.

I questioned if I would be able to continue teaching seminars, conducting research, and practicing. Thankfully, using the lasers while doing brain exercises got me back to normal function, and I have been able to repeat this with many patients since then.

Even if you have no training in functional neurology, the laser protocols are very simple yet highly effective. The patient performs exercises for the weak pathways while you simultaneously have laser applied.

For my deficits, I applied my green, violet, and red lasers transcranially, or over the carotid arteries, which is what the Russians have done with high-energy lasers since the 1970s. While lasering, I smelled essential oils to get those neuronal pools to fire and drive blood flow to the area of the olfactory bulb; stimulating smell also impacts other areas like the hippocampus, which is important for memory. Driving blood to that targeted weak area meant that laser energy picked up by the circulatory system would be directed where it was needed.

Additionally, I lasered while using apps such as Duolingo or Lumosity to help with my word searching, frontal lobe activity, and memory. I also practiced meditation or vagus nerve exercises, such as hard gargling.

A Harvard PhD in Clinical Research and Yale University Separately Show the Impacts of the Spike Protein and mRNA Vaccines

A study published in January 2021 by my friend Dr. Datis Kharrazian, PhD, DC, and immunologist Aristo Vojdani showed that the spike protein from either wild infection or mRNA vaccination can trigger autoimmune reactions against dozens of tissues in the body, including the brain and nervous system.5

Recently, Yale University released the findings of the Yale LISTEN Study that is tracking post-vaccination syndrome (PVS). Some of the most common symptoms were exercise intolerance reported by 71% of participants, excessive fatigue by 69%, numbness by 63%, brain fog by 63%, neuropathy by 63%, insomnia by 61%, myalgia by 55%, headache in 53%, and dizziness in 50%.

How many of your patients are experiencing these symptoms? Do you have a plan for how to help them? Later in the article, I will share some simple steps to provide support.

Degeneration Starts in Your 20s and 30s

A common misconception is that neurodegeneration starts in later years of life. Warning signs start much earlier than 60, with things many people ignore, such as chronic constipation or a diminished sense of smell. Forgetting where things are, searching for words, balance issues, and loss of interest in hobbies are other symptoms commonly ignored or considered “normal aging.”

The earlier you notice these symptoms and take a proactive approach, the better your chances are of being in the group that does not develop dementia. Habits such as exercising, especially with weights, getting adequate sleep, maintaining healthy blood sugar levels, managing inflammation, good supplementation, and stimulating the brain are all great ways to support the brain. Let’s not forget the effect of chiropractic adjustments on the brain and neuroplasticity.6

Laser applied transcranially with a pulse of 40 Hz can break apart protein tangles associated with neurodegeneration and favorably modulate glial cells into an anti-inflammatory M2 state.7

The impact of lasers on glial cells is of particular importance for patients with a history of concussions. Glial cells can become primed if there are repeated concussions, which can lead to them destroying healthy tissues, causing the “honeycomb” appearance of the brains of patients with chronic traumatic encephalopathy (CTE), such as former NFL players Junior Seau and Aaron Hernandez.

Red laser has been shown to be able to favorably modulate glial cell activity, dampen inflammation, modulate cytokines, and stimulate the brain-derived neurotrophic factor (BDNF) so profoundly that it has been suggested as a feasible way to control the progression of neurodegenerative disorders.8 Laser can also support glutathione, nitric oxide, IL 10, and T reg cells to modulate autoimmune conditions.

A common misconception is that violet, green, and red lasers cannot impact the brain because you need a deeper penetrating wavelength. In addition to the previously mentioned study showing the efficacy of visible lasers, a 2018 study on children with autism was published that was quadruple blinded and randomized to compare the efficacy of 640 mn red laser versus 640 mn red LED.

In the study, fMRIs were performed on the subjects, and the results proved that there was increased blood flow and neuronal activity after just five minutes of exposure to a three-diode scanning laser, the FX635.9 Children experienced significant changes on their ABC 57-point outcomes assessment test while the LED group did not experience the same improvements.

For support that violet can impact brain function, Calixto Machado, MD, was the principal investigator in a study that utilized a red and violet laser applied over the vagus nerve. QEEG was used to assess the impact, if any, that these wavelengths had on the brain.

Their findings were the following:

The results using the red/violet LLLT for VNS might be useful in conditions in which it is necessary to induce an increment of brain activity in many conditions, like in depression, neurorehabilitation, in coma, in disorders of consciousness, in dementia, and in some patients complaining autism.10

Laser Can Be Part of a Brain Wellness/Performance Enhancement Program

Every patient who comes into my office gets laser. If they are in for a shoulder or back injury, I share with them the impact laser can have for brain support. So many patients are suffering in silence today because their doctors don’t listen to them about their brain issues, or the doctors do not have any protocols to help them get their function back.

I have patients come for regular laser therapy and adjustments as part of their program to maximize performance and prevent the plague of brain decline that our country is experiencing. If you have functional neurology training, laser will take you to the next level. If you have no training, laser will level you up as well with some protocols that are as simple as point, shoot, and then adjust. Your patients and their families will thank you for keeping them in the 50% who don’t go down the neurodegenerative road.

Dr. Kirk Gair has been in private practice since 1999 and using Ercho-nia cold lasers since 2004. He has treated elite athletes, including Su-per Bowl and MLB champions, as well as national record holders. His expertise in cold laser therapy and training in functional medicine and neurology attract patients from across the U.S. Dr. Gair has been fea-tured in the documentary The Thyroid Secret and the bestselling book Hashimoto’s Protocol by Dr. Izabella Wentz, as well as on major health platforms and podcasts. To contact Dr. Gair, call (626) 922-1414, email [email protected], or visit LaserChiropractic.net.

Reference

1. Davis MA, Chang CH, Simonton S, Bynum JPW. Trends in US medicare decedents' diagnosis of dementia from 2004 to 2017. JAMA Health Forum. 2022 Apr l;3(4):e220346. doi: 10.1001/jamahealthforum.2022.0346. PMID: 35977316; PMCID: PMC8976239.

2. Pires M, Rego AC. Apoe4 and Alzheimer's disease pathogenesis-mitochondrial deregulation and targeted therapeutic strategies. IntJMol Set. 2023 Jan 1;24(1):778. doi: 10.3390/ijms24010778. PMID: 36614219; PMCID: PMC9821307.

3. Molnar T, Lehoczki A, Fekete M, Vamai R, Zavori L, Erdo-Bonyar S, Simon D, Berki T, Csecsei P, Ezer E. Mitochondrial dysfunction in long COVID: mechanisms, consequences, and potential therapeutic approaches. Geroscience. 2024 Oct;46(5):5267-5286. doi: 10.1007/ S11357-024-01165-5. Epub 2024 Apr 26. PMID: 38668888; PMCID: PMC11336094.

4. Kamani E, Razzaghi M. Application of laser blue light with a wavelength of 405 nm in the treatment of patients with the virus COVID-19. J Lasers Med Sci. 2020 Fall;ll(4):361-362. doi: 10.34172/ jlms.2020.58. Epub 2020 Oct 3. PMID: 33425284; PMCID: PMC7736931.

5. Vojdani A, Vojdani E, Kharrazian D. Reaction of human monoclonal antibodies to SARS-CoV-2 proteins with tissue antigens: implications for autoimmune diseases. Front Immunol. 2021 Jan 19; 11:617089. doi: 10.3389/fimmu.2020.617089. PMID: 33584709; PMCID: PMC7873987.

6. Haavik H, Niazi IK, Amjad I, Kumari N, Ghani U, Ashfaque M, Rashid U, Navid MS, Kamavuako EN, Pujari AN, Holt K. Neuroplastic responses to chiropractic care: broad impacts on pain, mood, sleep, and quality of life. Brain Sei. 2024 Nov 7;14(11):1124. doi: 10.3390/brainscil4111124. PMID: 39595887; PMCID: PMC11592102.

7. Shen Q, Guo H, Van Y. Photobiomodulation for neurodegenerative diseases: a scoping review. Int J Mol Sci. 2024 Jan 28;25(3):1625. doi: 10.3390/ijms25031625. PMID: 38338901; PMCID: PMC10855709.

8. Song S, Zhou F, Chen WR. Low-level laser therapy regulates microglial function through Src-mediated signaling pathways: implications for neurodegenerative diseases. J Neuroinflammation. 2012 Sep 18;9:219. doi: 10.1186/1742-2094-9-219. PMID: 22989325; PMCID: PMC3488572.

9. Leisman G, Machado C, Machado Y, Chinchilla-Acosta M. Effects of low-level laser therapy in autism spectrum disorder. Adv Exp Med Biol. 2018;1116:111-130. doi: 10.1007/5584_2018_234. PMID: 29956199.

10. Machado C, Machado Yanin, Chinchilla M, Foyaca-Sibat H. Vagal nerve stimulation with low level lasers of two different frequencies, assessed by QEEG. Internet Journal of Neurology. 2019;21(l); 1-9. doi: 10.5580/ UN. 54122.