To what extent can traditional Chinese medicine be explained by science? — The intersection of neuroimmunology as demonstrated by acupuncture research

Does Acupuncture Really Move the Immune System?

The debate surrounding acupuncture has always swung between two extremes. One side argues that it is effective as a long-standing practical knowledge, while the other insists that caution is necessary due to insufficient scientific explanation. The article in focus does not merely repeat this opposition but instead focuses on the "pathway" through which acupuncture stimuli are input into the nervous system and lead to an immune response. The key point is that acupuncture is reinterpreted not as mere local stimulation but as an entry point for biological regulation that spreads from sensory nerves to the central nervous system, and further to the autonomic and enteric nervous systems.

According to the original article, this review was compiled by researchers from Fudan University and the China Academy of Chinese Medical Sciences, integrating the mechanisms by which acupuncture stimuli regulate immune function from the perspectives of neuroanatomy, immunology, and systems biology. Instead of the traditional linear explanation of "this acupoint affects this organ," a blueprint is presented where mechanical stimuli are converted into sensory nerve signals, integrated in the spinal cord and brainstem, and then affect systemic immune responses through autonomic and endocrine outputs.

What’s New—From "Acupoints" to "Circuits"

The intriguing aspect of this research is that it does not mystify the effects of acupuncture. The article explains that acupuncture stimuli are first received as mechanical forces, which are then converted into nerve signals through interactions with mechanoreceptors and connective tissues. From there, sensory neurons in the dorsal root ganglia and trigeminal ganglia are activated, and the information is sent to the spinal cord and brainstem. In other words, the starting point is "how the nerves receive input."

What is even more important is that, after integration on the central side, multiple autonomic and endocrine routes such as the vagus nerve, sympathetic nerves, and the hypothalamic-pituitary-adrenal axis are involved. This suggests that acupuncture's effects should not be understood as a simple switch but rather as a precise issue of biological control, determining which input predominantly activates which output pathway.

Not Just Local Reactions, but Systemic Spread

Many people associate acupuncture with local effects such as muscle tension relief, improved blood flow, and pain alleviation. However, the original article also touches upon changes in the immune microenvironment that occur afterward. Locally, a reaction akin to controlled neurogenic inflammation occurs, altering blood flow and interactions between cells. The collaboration of sensory nerves, mast cells, fibroblasts, and immune mediators may rewrite the environment immediately after acupuncture stimulation.

Simultaneously, at the systemic level, the possibility that the anti-inflammatory route via the vagus nerve suppresses the release of excessive inflammatory factors, and that the sympathetic nervous system adjusts immune cell activity according to the stage of the disease, is also suggested. This indicates that acupuncture cannot be simplified as merely "suppressing inflammation." Rather, it might be more accurate to understand it as context-dependent regulation that adjusts the body's overly skewed immune response according to the situation.

The Connection with the Gut Indicates Wider Implications

Another noteworthy point in the article is the mention of the enteric nervous system. The review suggests that acupuncture stimuli may enhance the gut barrier function and affect the interaction between the gut environment and neuropeptides, potentially impacting the overall immune balance. In recent years, the relationship between the gut and immunity, and the gut and brain, has become a major theme in medical research, making it intriguing that acupuncture is connected to this area.

This should be seen not as material to excessively elevate the value of acupuncture, but as an attempt to reinterpret why acupuncture has been used for seemingly unrelated symptoms in modern scientific terms. If the connection between the enteric nervous system and immunity is organized by pathology, it may clarify the relationship not only with digestive symptoms but also with chronic inflammation and stress-related symptoms.

The Complexity of Varying Results with Stimulus Intensity

A particularly important point in the original article is the indication that the neural circuits mobilized change depending on conditions such as the intensity, frequency, and depth of the stimulus. This means that it cannot be simply categorized into a binary choice of "does acupuncture work or not." Even with stimulation to the same area, changes in technique, depth, the presence of electrical stimulation, and frequency alter the input received by the body. Therefore, it is somewhat natural for clinical research results to vary.

This is a point that tends to be debated on social media. Proponents may argue, "That's why skilled techniques are necessary," while skeptics may criticize, "The conditions are too dependent, lacking reproducibility." Both reactions seem plausible. For scientific advancement, it is necessary to visualize which stimulus conditions are linked to which neural circuits and to distill them to a standardizable level. The review provides a starting point for this organization.

Patterns of Reactions Likely to Spread on Social Media

When this type of topic circulates on social media, reactions tend to fall into four main categories.

First, there is the welcoming voice that says, "Finally, acupuncture is beginning to be explained by science." For those who practice traditional medicine or have felt the usefulness of acupuncture firsthand, having it explained in terms of neural circuits and immunity is a significant tailwind. It appears as if sensory experiences are being connected to the context of modern medicine.

Second, there is the cautious argument that "a review is a review and not a definitive treatment effect." This is very important. The original article introduces a review that synthesizes mechanism research and experimental/translational research on how acupuncture regulates immune function, and it does not report large-scale intervention trials directly proving clinical efficacy for specific diseases. Confusing these can quickly heat up the discussion.

Third, there is a more moderate reception that says, "Even if there are parts that cannot be explained by placebo, it does not mean it is immediately a panacea." This reaction has been increasing recently, aiming to separate the usable scenarios and limitations rather than viewing it as a binary opposition of Eastern versus Western medicine. The content of this article is best read in this way.

Fourth, there is the backlash that says, "Is this another glorification of Eastern medicine?" This is inevitable in discussions about traditional medicine. Especially words like "immunity," "inflammation," and "gut" easily attract attention, and if the headline is even slightly exaggerated, it can be perceived as a baseless panacea. In reality, the argument in the original article leans heavily towards mechanisms, trying to distance itself from the notion of "working for everything." Missing this point leads to misunderstandings in the discussion.

Will Acupuncture Be Redefined as a "Technique for Re-adjusting the Body"?

The framework presented in this review can be summarized as the flow of "mechanical stimulation—neural encoding—immune response." This concept connects traditional acupuncture to modern neuroregulation technologies and bioelectronic medicine. The original article also touches on the possibility that such an understanding could lead to precise acupuncture protocols and the development of bioelectrical medical devices.

What emerges here is not just the pros and cons of acupuncture itself. If it is sufficiently elucidated that the body responds with specific immune and inflammatory responses to specific stimulus inputs, it could potentially lead to the development of "nerve stimulation devices that replicate acupuncture" or "non-pharmacological treatments optimized for specific pathologies" in the future. In other words, acupuncture research is not only a verification of traditional medicine but also a hint for next-generation neuromodulation technologies.

How to Balance Expectations and Caution

However, expectations should not be directly transformed into clinical certainty. The review primarily organizes a framework of mechanisms, and careful verification is still needed to answer questions about which diseases, under what conditions, and to what extent effects can be reproduced for individual patients. The immune system is extremely complex, with situations where suppressing inflammation is beneficial and others where reducing defensive responses too much is inadvisable. Therefore, while the phrase "moving the immune system" is attractive, it should also be handled with caution.

Nonetheless, the significance of the article is not small. It steps away from the emotional debate of whether to believe in acupuncture or not, and shifts the discussion to the question of which circuits, under what conditions, are connected to which immune responses. This is not about uncritically elevating Eastern medicine but about repositioning long-used empirical techniques within the coordinates of modern neuroscience and immunology.

Ultimately, How Should We Perceive This Discussion?

The answer is simple. Acupuncture is no longer at a stage where it can be dismissed as a "mysterious technique with unknown efficacy." On the other hand, it is still too early to elevate it as a "revolutionary treatment that freely manipulates immunity." What exists now is an important advancement in between: the fact that we are finally able to concretely depict how acupuncture stimuli are input into the body, through which neural circuits, and what immune changes they may lead to.

While this is a theme that easily polarizes opinions on social media, the real focus should not be on whether one is for or against it. The essence is that sensory nerves, autonomic nerves, the enteric nervous system, and immune cells are no longer treated as separate mechanisms but are beginning to be handled as a single regulatory network. The discussion surrounding acupuncture may now move beyond the old dichotomy of tradition versus pseudoscience to a more specific question of how to evaluate and incorporate non-pharmacological immune modulation via neural circuits into medical practice.

Source URL

1. News-Medical
   https://www.news-medical.net/news/20260422/Acupuncture-regulates-immune-function-through-specific-neural-circuit-activation.aspx
2. The institutional page referenced in the original article (Chinese Academy of Sciences, listed as a reference in News-Medical)
   https://english.cas.cn
3. The DOI of the paper mentioned in the original article (cited as a reference in News-Medical)
   https://dx.doi.org/10.13702/j.1000-0607.20250346