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Monday, 24 March 2025

How Cupping Works: from Practice to Mechanism

Tiejun Tang

Cupping therapy is a traditional healing practice that has gained significant attention in recent years due to its purported health benefits. Rooted in ancient medical traditions, cupping is used in various cultures to treat a range of ailments. This article explores the history, clinical indications, contraindications, and scientific mechanisms underlying cupping therapy.

History of Cupping Therapy

Cupping therapy dates back thousands of years and has been used in different forms across many civilizations. The earliest recorded use of cupping can be traced to ancient Egyptian, Chinese, and Middle Eastern cultures. Egyptian medical texts, such as the Ebers Papyrus (circa 1550 BC), mention cupping as a method to remove toxins from the body. In Traditional Chinese Medicine (TCM), cupping is associated with promoting the flow of Qi (vital energy) and blood circulation. Islamic medicine, as documented by renowned scholars like Avicenna, also advocated for cupping as a therapeutic intervention for various diseases. The tools for cupping have evolved from animal horns used in ancient times to bamboo, pottery, glass, etc.

Clinical Indications of Cupping Therapy

Cupping is commonly used for a variety of conditions, including:

  • Musculoskeletal pain: It is frequently applied to alleviate conditions such as back pain, neck pain, and arthritis.
  • Respiratory issues: Cupping has been traditionally employed to relieve symptoms of colds, asthma, and bronchitis.
  • Stress and anxiety: The relaxing effect of cupping may help in reducing mental stress and tension.
  • Digestive disorders: Some practitioners use cupping to aid digestion and treat gastrointestinal conditions.
  • Sports recovery: Many athletes incorporate cupping to reduce muscle soreness and improve recovery time.

Contraindications of Cupping Therapy

While cupping is generally considered safe, it is contraindicated in certain conditions, including:

  • Skin infections or open wounds: Cupping over compromised skin can lead to infections.
  • Bleeding disorders: Individuals with hemophilia or those on anticoagulant therapy should avoid cupping due to the risk of excessive bruising.
  • Pregnancy: Cupping should be avoided over the abdomen and lower back in pregnant women.
  • Severe cardiovascular conditions: Those with uncontrolled hypertension or cardiac disease should seek medical advice before undergoing cupping therapy.

Scientific Explanation of the Mechanism of Cupping

Cupping is believed to promote healing by enhancing blood flow, reducing pain, and removing toxins. Modern research suggests that cupping therapy exerts its effects through multiple physiological mechanisms:

1.    Pain Modulation via Diffuse Noxious Inhibitory Controls (DNICs):

Cupping may activate the body's DNIC system, where the introduction of a new noxious stimulus (the suction) can diminish the perception of pre-existing pain. This "pain inhibits pain" phenomenon suggests that the discomfort from cupping can trigger the body's pain-relief mechanisms.[1]

2.    Enhanced Blood Circulation and Nitric Oxide Release:

The suction effect of cupping causes localized vasodilation, increasing blood flow to the treated area.[2] This process may involve the release of nitric oxide, a molecule that regulates blood pressure and promotes vascular health. Improved circulation can facilitate the removal of toxins and supply oxygen-rich blood to tissues, aiding in healing and reducing muscle tension.[3]

3.    Reflex Zone Stimulation:

According to reflex zone theory, stimulating specific skin areas through cupping can influence corresponding internal organs and tissues. This suggests a neurobiological connection where cupping affects deeper structures via skin receptors, potentially improving organ function and alleviating discomfort.[1]  

4.    Activation of Endogenous Analgesic Systems:

The mechanical action of cupping may stimulate mechanosensitive nerve fibers (Aδ and C fibers), leading to the release of endorphins—natural pain-relieving chemicals. This mechanism is similar to that proposed for acupuncture, where physical stimulation results in analgesia.[2]

5.    Hemorphin Release from Hemoglobin Degradation:

Cupping can cause minor bleeding under the skin, leading to the breakdown of hemoglobin. This process may release hemorphins, peptides with analgesic properties, contributing to pain relief experienced after cupping sessions.[2]

The above studies provide scientific evidence for the mechanism of cupping therapy, and further scientific research is needed to fully reveal the mystery of cupping therapy.

Conclusion

Cupping therapy remains a widely practiced and valued treatment in both traditional and contemporary medicine. While scientific evidence continues to evolve, many individuals report significant relief from various ailments. However, it is crucial to consult a qualified healthcare provider before undergoing cupping therapy, especially for those with underlying health conditions.

As interest in alternative medicine continues to grow, further research will help clarify the full range of benefits and mechanisms behind this ancient therapeutic practice.

  Reference:

1.    Abdullah MN Al-Bedah .The medical perspective of cupping therapy: Effects and mechanisms of action. J Tradit Complement Med. 2018 Apr 30;9(2):90–97

2.    Changzheng Song. Hemorphin-Based Analgesia: A Mechanism of Cupping Technique? J Pain Res. 2023 May 29;16:1751–1754.

3.    Dominador Perido. How does cupping work? Mechanisms of action explained. Massage Magazine 2022; Dec. 12.


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