Study Reveals Previously Unknown Mechanism Behind Acupuncture’s Ability To Reduce Pain


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When it comes to treating ailments such as chronic pain, I definitely prefer nontoxic options to drugs and surgery. Americans use 80 percent of all the opioids sold worldwide1 — a testament to the pervasiveness of pain in this country — and with drug overdoses now being the ninth leading cause of death in the U.S., we clearly need safer alternatives.

Acupuncture is one such alternative. Research shows it can be an effective option for a number of health problems, but pain in particular. Contrary to allopathic, symptom-based medicine, acupuncture aims to eliminate the root cause of your problem, which is said to originate in a dysfunction in your body’s energetic meridian system.

Basic Principles Of Acupuncture

Traditional Chinese medicine (TCM) views the body as a cohesive system where everything within it is interconnected. In other words, it recognizes that each part of your body has the ability to affect all other parts.

There are 14 major energy channels called meridians that flow through your body. An energy called qi (or chi) circulates along the meridians to all parts of your body, including the internal organs and every cell. This qi is the vital force that literally keeps us alive. Vibrant health is a result of balanced, unimpeded flow of energy through your body.

According to TCM, illness and pain are the byproducts of energy blockages somewhere along one or more meridians. Each acupuncture point along the meridian acts like a pass-through or gate. Energy can get “bottlenecked” in these points, slowing down the flow, sometimes to the point of standstill. This is the precursor to pain and illness.

By inserting a thin needle into the congested or “clogged” area, it opens the gate and allows the energy to flow again. With qi flowing smoothly, your body can re-regulate the flow of energy, repair itself and maintain its own optimal level of health. Herbs and other therapies such as guacha, cupping and moxibustion — the burning of herbs on or over the skin — can be used to support the healing.

Acupuncture May Offer Drug-Free Pain Relief

In a 2012 analysis2,3 of 29 published studies involving more than 17,900 participants, researchers concluded that acupuncture has a definite effect in reducing chronic pain — more so than standard pain treatment. Real acupuncture also produced slightly better results than using sham needles, which suggests the benefits of needling are due to more than the placebo effect.

By going the extra mile and retrieving the raw data on self-reported pain, and standardizing the various study participants’ responses, they were also able to more accurately assess and compare them as a whole. Overall, the team discovered a “clear and robust” effect of acupuncture in the treatment of back pain, neck pain, shoulder pain, osteoarthritis and headaches.

On a scale of zero to 100, participants who started out with a pain rating of 60 experienced an average 30-point drop (a 50 percent reduction) in response to the real acupuncture treatments (using needles); a 25-point drop when receiving sham acupuncture; and a mere 17-point drop when receiving “standard pain care” that did not include acupuncture. According to the lead author:4

“The effects of acupuncture are statistically significant and different from those of sham or placebo treatments ... So we conclude that the effects aren’t due merely to the placebo effect.”

Acupuncture Cuts Pain By Boosting Nitric Oxide

While there’s been a great deal of controversy as to whether or not acupuncture works “for real,” and if so, how, new research presents an answer to this question. The study5,6,7,8,9 in question was conducted by researchers at LA BioMed.10 The research laboratory has developed a noninvasive device capable of sampling biomolecules over specific skin regions.

Using this device, they were able to determine that when acupuncture is properly administered, nitric oxide (NO) is released at the “acupoints” — the acupuncture sites into which the needles are inserted. NO is a soluble gas that is continually produced from the amino acid L-arginine inside your cells. This gas plays an important role in supporting normal endothelial function and protecting your cells’ powerhouses, the mitochondria. It’s also a potent vasodilator.

By relaxing and dilating your blood vessels, NO improves blood flow and lowers blood pressure. NO also encourages release of natural analgesics (pain relieving chemicals) in your body. Together, this helps explain why and how acupuncture works to reduce pain.

A number of acupuncture studies have produced negative results. The reason for this may have to do with the way the acupuncture is done. In order for NO release to occur, “de qi” had to be elicited. De qi feels a bit like an electric shock. Westerners are not accustomed to this sensation, which is why many Western acupuncturists won’t do it.

De qi is elicited by twisting the inserted needle. In this study, they twisted the needle for two minutes or until de qi was elicited. They then manipulated the needles for two minutes every five minutes, for a total of 20 minutes each treatment. Heat can also amplify the effectiveness of the treatment and, here, the application of heat also increased NO release at the acupoints.

Acupuncture Reduces Osteoarthritis Pain

A number of studies support the use of acupuncture for pain. A large, landmark study11,12 published in 2004, which assessed whether acupuncture might work for osteoarthritis pain, produced remarkably positive results.

A total of 570 patients diagnosed with osteoarthritis of the knee were enrolled for this 26-week-long trial — the longest and largest randomized, controlled phase III clinical trial of acupuncture ever conducted. None of the participants had tried acupuncture before, and none had had knee surgery in the previous six months. Nor had they used steroid injections.

The participants were randomly assigned to receive one of three treatments: acupuncture, sham acupuncture or self-help strategies recommended by the Arthritis Foundation (the latter served as a control group). Significant differences in response was seen by week eight and fourteen, and at the end of the trial, the group receiving real acupuncture had a 40 percent decrease in pain and a nearly 40 percent improvement in function compared to baseline assessments — a 33 percent difference in improvement over the sham group.

According to the late Dr. Stephen E. Straus, who served as the first director of the National Center for Complementary and Alternative Medicine (NCCAM), which is a part of the National Institutes of Health:13

“For the first time, a clinical trial with sufficient rigor, size and duration has shown that acupuncture reduces the pain and functional impairment of osteoarthritis of the knee. These results also indicate that acupuncture can serve as an effective addition to a standard regimen of care and improve quality of life for knee osteoarthritis sufferers.

NCCAM has been building a portfolio of basic and clinical research that is now revealing the power and promise of applying stringent research methods to ancient practices like acupuncture.”

Other Evidence Showing What Acupuncture ‘Does’

Boosting NO release isn’t the only mechanism by which acupuncture reduces pain. Previous research suggests acupuncture stimulates your central nervous system to release natural chemicals that alter bodily systems, pain and other biological processes. In 2003, the World Health Organization (WHO) conducted an extensive review and analysis of clinical trials involving acupuncture.14 According to this report,15 acupuncture:

  • Stimulates the conduction of electromagnetic signals, which may release immune system cells or painkilling chemicals
  • Activates your body’s natural opioid system, which may help reduce pain or induce sleep
  • Stimulates your hypothalamus and pituitary gland, which modulate numerous body systems
  • Alters secretion of neurotransmitters and neurohormones, which may positively influence brain chemistry

According to the WHO’s analysis, “Some of these studies have provided incontrovertible scientific evidence that acupuncture is more successful than placebo treatments in certain conditions.” The report again confirmed its benefits for pain, saying:

“The proportion of chronic pain relieved by acupuncture is generally in the range 55–85 percent, which compares favorably with that of potent drugs (morphine helps in 70 percent of cases) and far outweighs the placebo effect (30–35 percent)”

Acupuncture Reduces Pain By Shutting Down Certain Brain Regions

In the BBC documentary, “The Science of Acupuncture,” which originally aired in 2015, a team of researchers conducted an experiment that had never been done before. Using high-tech MRI imaging, they visually demonstrated that acupuncture has a very real effect on the brain. Acupuncture, it turns out, does something completely unexpected — it deactivates certain parts of the brain, particularly in the limbic system, decreasing neuronal activity, opposed to having an activating impact.

Their experiment also clearly showed that superficial sham needling does not have this effect. Your limbic system is associated with the experience of pain, adding further evidence that something unique happens during acupuncture. It quite literally alters your experience of pain by shutting down these deeper brain regions.

This article was brought to you by Dr. Mercola, a New York Times bestselling author. For more helpful articles, please visit Mercola.com today and receive your free Take Control of Your Health E-book!

See also:
Balance Your Body To Relieve Pain
Treating Pain Without Drugs

Sources and References
1 Aplus.com April 19, 2016
2, 4 Archives of Internal Medicine 2012 Sep 10:1-10
3 Time Healthland September 11, 2012
5 Evidence-based Complementary and Alternative Medicine 2017, Article ID: 4694238
6 Medicalxpress June 29, 2017
7 The Verge July 1, 2017
8 Forbes June 30, 2017
9 Medical News Today July 2, 2017
10 LA Biomed
11 Annals of Internal Medicine 2004 Dec 21;141(12):901-10
12, 13 NIH News December 20, 2004
14 WHO Official Position, Evidence Based Acupuncture
15 World Health Organization, Acupuncture: Review and Analysis of Reports on Controlled Clinical Trials, 2003

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