Concerns About Shortwave Therapy and Its Effects on the Body - Rehabilitation

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Questions about shortwave therapy?


Hello, doctor! I would like to ask whether the electromagnetic radiation generated by shortwave therapy during lumbar rehabilitation could affect human organs, particularly in the lumbosacral and pelvic areas due to direct contact.
I have been undergoing rehabilitation quite frequently for the past 7.8 years, with sessions three times a week, totaling over a year of treatment in six and seven-month periods.
Recently, I read in a physical therapy journal that long-term exposure personnel should avoid being within one meter of the device, and I am in direct contact for extended periods.
I am concerned about potential negative effects on my health.
I understand that both domestic and international journals show no direct evidence of harm or the extent of any effects, but I am worried since there are restrictions for pregnant women (even though I am male, I still have a reproductive system within the pelvis).
I would appreciate your clarification on my concerns.
Thank you very much!

Mr. Hsu, 30~39 year old female. Ask Date: 2017/03/30

Dr. Yin Xinbei reply Rehabilitation


The effects of electromagnetic radiation on the human body remain inconclusive, similar to the ongoing debate about whether long-term mobile phone use can cause brain tumors, with proponents on both sides.
However, it is a principle to avoid exposure during embryonic development and to minimize long-term, high-level exposure.
For lumbar traction, heat therapy can be performed using hot packs, unless there is suspicion of pain caused by inflammation of the joints, in which case shortwave therapy may be considered unnecessary.
Nevertheless, since this was an issue 7-8 years ago, there is no need for excessive concern.
The development of sperm from spermatogonia takes about 60-70 days, so if there are worries about sperm being affected, it is advisable to avoid exposure during this period.

Reply Date: 2017/03/30

More Info


Shortwave therapy, also known as diathermy, is a form of physical therapy that uses electromagnetic waves to generate heat within body tissues. This treatment is often employed for pain relief, muscle relaxation, and to promote healing in conditions affecting the musculoskeletal system, such as lower back pain or arthritis. Your concerns about the potential effects of electromagnetic radiation from shortwave therapy on the body, particularly after prolonged exposure, are valid and warrant discussion.

Firstly, it is important to note that shortwave therapy operates within specific frequency ranges that are generally considered safe for therapeutic use. The electromagnetic radiation produced during this therapy is non-ionizing, meaning it does not carry enough energy to remove tightly bound electrons from atoms or molecules, which is a characteristic of ionizing radiation (like X-rays). Therefore, the risk of cellular damage or mutations that can lead to cancer, which is often associated with ionizing radiation, is significantly lower with non-ionizing radiation.

Regarding your specific concerns about the effects on organs and the pelvic region, current research indicates that shortwave therapy is generally safe when applied correctly and under professional supervision. The main risks associated with this therapy include burns or overheating of the skin if the device is not used properly. However, there is limited evidence to suggest that long-term exposure to shortwave therapy has adverse effects on internal organs or reproductive systems in men. The guidelines that recommend avoiding close proximity to the device for extended periods are primarily precautionary, aimed at minimizing any potential risks associated with excessive heat exposure.

The fact that you have undergone this therapy consistently over a year raises questions about cumulative exposure. While there is no substantial evidence linking shortwave therapy to long-term health issues, it is always prudent to discuss any concerns with your healthcare provider. They can assess your individual health status, review your treatment history, and determine if any additional monitoring or alternative therapies would be more suitable for your needs.

Additionally, the caution against using shortwave therapy in pregnant women is based on the potential for thermal effects on the developing fetus. This precaution does not necessarily extend to men, but it highlights the importance of understanding the biological effects of heat and electromagnetic fields on sensitive tissues.

In conclusion, while your concerns about the effects of shortwave therapy are understandable, current evidence suggests that it is safe when used appropriately. However, if you experience any unusual symptoms or have ongoing concerns, it is essential to consult with your healthcare provider for personalized advice. They may recommend alternative therapies or modifications to your treatment plan to ensure your safety and well-being. Always prioritize open communication with your healthcare team regarding any treatment you undergo, especially if you have specific health concerns.

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