What Is Laser Acupuncture?

1. Method of applying light to acupoints

Laser acupuncture is a method of irradiating acupoints with laser light. It starts by determining stimulation locations based on traditional meridian and acupoint theories and utilizing modern optical technology. The source text focuses on explaining the method using weak lasers.

While needle acupuncture utilizes stimulation that penetrates the skin, laser acupuncture utilizes light. The beam can be focused or broadened to irradiate a specific area, and variations in wavelength, output, irradiation area, and duration affect the conditions under which it is delivered to the tissue. Therefore, the mere statement that "a laser is used" does not imply the same method or effect.

2. The Background of the Meeting of Traditional Theory and Technology

Meridian theory is an explanatory system of traditional medicine formed through long therapeutic experience. The source text introduces the development of the concepts of meridians and acupoints, starting with records from the *Huangdi Neijing*, and explains how acupoint stimulation was subsequently expanded to various methods, such as electrical and magnetic stimulation.

Following the advent of lasers, light was also studied as one of these stimulation methods. The source text introduces that clinical applications began in China in 1973, and that the types of devices expanded from early He-Ne lasers to semiconductor lasers. This historical explanation should be read with a distinction between it and current clinical evidence.

3. How is it different from needle acupuncture?

The source text highlights the fact that it does not use needles, allows for device-controlled stimulation conditions, and enables the selection or expansion of the treatment area. It also introduces the intention to reduce pain and the burden associated with needles.

However, the fact that it is non-invasive does not mean there is absolutely no risk. Precautions vary depending on the type and output of light used and the application site. It is important not to understand laser acupuncture as the same treatment as surgical lasers or photodynamic therapy using photosensitizers.

4. What types of lasers do you handle?

The book features He-Ne, semiconductor, CO₂, argon, He-Cd, and nitrogen lasers. Different wavelengths, such as red, green, blue, ultraviolet, and infrared, result in different ways of light interacting with tissues. The source text explains this by connecting it to the depth of acupoints and tissue characteristics.

Determining effects based solely on color is not the purpose of this explanation. Even with the same wavelength, output, irradiation area, and time must be considered together, and it is difficult to interpret device-specific characteristics collectively. This article focuses on types and classifications, omitting device settings and repetitive application examples.

5. Two perspectives explaining the action

Traditional medical explanations focus on the circulation of meridians and the regulation of Qi and blood. Explanations regarding the biological effects of light pay attention to photochemical and photothermal changes that occur after tissues absorb light. The book introduces both perspectives, but they are not explained using the same terminology.

The following section on light and tissue covers the properties of lasers and tissue responses, while the section on meridians and acupoints deals with traditional concepts for determining stimulation locations. Reading the two articles separately makes it easier to understand the premises from which each explanation originates.

6. How do you read application examples?

The source text introduces applications in various fields, including internal medicine, the musculoskeletal system, the nervous system, pediatrics, women's health, and the eye, ear, nose, and mouth. However, the fact that there are application cases is different from the judgment that efficacy for a specific disease has been established. In the articles on specific diseases, we examine what the book reported but do not draw conclusions as to whether the treatment is suitable for an individual.