Blood irradiation therapies
Encyclopedia
Blood irradiation therapy is a procedure in which the blood is exposed to light (often laser
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation...

 light) for therapeutic reasons. Most research on blood irradiation therapy has been conducted in Russia and China and it is rarely used outside of those countries. Its effectiveness and utility as a treatment has been questioned. Blood irradiation therapy can be administered through a catheter
Catheter
In medicine, a catheter is a tube that can be inserted into a body cavity, duct, or vessel. Catheters thereby allow drainage, administration of fluids or gases, or access by surgical instruments. The process of inserting a catheter is catheterization...

 in a vein
Vein
In the circulatory system, veins are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart...

, through the blood vessels inside the nose or applied externally through the skin. It is not related to the practice of gamma
Gamma ray
Gamma radiation, also known as gamma rays or hyphenated as gamma-rays and denoted as γ, is electromagnetic radiation of high frequency . Gamma rays are usually naturally produced on Earth by decay of high energy states in atomic nuclei...

 irradiation of blood in transfusion medicine
Transfusion medicine
Transfusion medicine is the branch of medicine that is concerned with the transfusion of blood and blood components. The blood bank is the section of the clinical laboratory where medical technologists process and distribute blood products under the supervision of a medical director, often...

.

History

Intravenous laser blood irradiation was developed experimentally by the Russian researchers, Meshalkin and
Sergievskiy, and introduced into clinical practice in 1981. Originally the method was applied in the treatment of cardiovascular abnormalities.

Laser blood irradiation therapy was government-certified in Germany in 2005. In the following two years, this method was established in more than 300 centers in Germany, Austria, Switzerland, Italy and Australia.

Intravenous

Intravenous or intravascular blood irradiation involves the in-vivo illumination of the blood by feeding low level laser
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation...

 light generated by a 1–3 mW helium–neon laser at a wavelength of 632.8 nm into a vascular channel, usually a vein in the forearm, under the assumption that any therapeutic effect will be circulated through the circulatory system
Circulatory system
The circulatory system is an organ system that passes nutrients , gases, hormones, blood cells, etc...

. The feasibility of intravascular laser irradiation for therapy of cardiocirculatory diseases was first presented in the American Heart Journal in 1982. The technique was developed primarily in Asia (including Russia) and is not extensively used in other parts of the world. It is claimed to improve blood flow and its transport activities, but has not been subject to randomized controlled trial
Randomized controlled trial
A randomized controlled trial is a type of scientific experiment - a form of clinical trial - most commonly used in testing the safety and efficacy or effectiveness of healthcare services or health technologies A randomized controlled trial (RCT) is a type of scientific experiment - a form of...

s and is subject to skepticism. While there have been some calls to increase research on this topic, others have called it "useless".

Ultraviolet blood irradiation may also be applied, though it involves drawing blood out through a vein and irradiating it outside of the body. Though promoted as a treatment for cancer, a 1952 review in the Journal of the American Medical Association
Journal of the American Medical Association
The Journal of the American Medical Association is a weekly, peer-reviewed, medical journal, published by the American Medical Association. Beginning in July 2011, the editor in chief will be Howard C. Bauchner, vice chairman of pediatrics at Boston University’s School of Medicine, replacing ...

and another review by the American Cancer Society
American Cancer Society
The American Cancer Society is the "nationwide community-based voluntary health organization" dedicated, in their own words, "to eliminating cancer as a major health problem by preventing cancer, saving lives, and diminishing suffering from cancer, through research, education, advocacy, and...

 in 1970 concluded the treatment was ineffective. Stephen Barrett
Stephen Barrett
Stephen Joel Barrett is a retired American psychiatrist, author, co-founder of the National Council Against Health Fraud , and the webmaster of Quackwatch. He runs a number of websites dealing with quackery and health fraud. He focuses on consumer protection, medical ethics, and scientific...

, writing for Quackwatch
Quackwatch
Quackwatch is an American non-profit organization founded by Stephen Barrett with the stated aim being to "combat health-related frauds, myths, fads, fallacies, and misconduct" and with a primary focus on providing "quackery-related information that is difficult or impossible to get elsewhere."...

, lists ultraviolet blood irradiation therapy as a questionable treatment.

Intranasal

Intranasal blood irradiation (also commonly known as "intranasal light therapy") involves the non-invasive irradiation of the nasal cavity by inserting a small light diode (usually red color either of low intensity laser or normal red light) to illuminate the nasal cavity walls. The microvascular blood vessel network in the nasal cavity is receptive to external stimulation which is then circulated in the body's circulatory system.

Transcutaneous

Transcutaneous therapy applies laser light on unbroken skin in areas with large numbers of blood vessels (such as the forearm). Because of the skin acting as a barrier to the blood, the power of the laser is often boosted to compensate.
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