Moxibustion: The Heat Therapy That Predates Acupuncture
How burning mugwort near the skin became one of TCM's most enduring treatments —and why Olympic athletes now swear by it.
⚡ Quick Take
- Moxibustion involves burning dried mugwort (艾草) near acupuncture points to warm the channels.
- The practice is at least 2,500 years old and is mentioned in the Huangdi Neijing, TCM's foundational text.
- 2016 Olympic swimmers were spotted with moxa marks, sparking global interest in the therapy.
Table of Contents
During the 2016 Rio Olympics, American swimmers appeared on television with perfect red circles on their shoulders and backs. The world assumed it was cupping. It was not. It was moxibustion —an ancient heat therapy that predates acupuncture by centuries and remains one of the most widely used treatments in Traditional Chinese Medicine.
This guide explains what moxibustion is, how it works, and why it is experiencing a global revival.
What Is Moxibustion?
Moxibustion (艾灸, jiu) is the practice of burning dried mugwort (Artemisia argyi, 艾草) near or on the skin at specific acupuncture points. The heat penetrates deeply into the tissue, warming the channels, dispelling cold, and promoting circulation of qi and blood.
There are two main techniques:
Direct Moxibustion
A small cone of moxa wool is placed directly on the skin, ignited, and allowed to burn until the patient feels heat. The cone is then removed. In some traditional practices, the moxa is allowed to burn completely, causing a small blister —this is called scarring moxibustion and is now rare outside of specialized clinics.
Indirect Moxibustion (More Common)
A practitioner holds a lit moxa stick (similar to a cigar) 2–3 centimeters above the skin, moving it in circular motions or pecking motions near the point. The patient feels warmth without direct contact. This is the method most commonly used in modern TCM clinics and the one seen on Olympic athletes.
The Mugwort Plant
Moxibustion would not exist without mugwort (Artemisia argyi), a perennial plant native to Asia.
| Property | Effect |
|---|---|
| Thermal conductivity | Mugwort burns slowly and evenly, producing penetrating heat that reaches deep tissue |
| Aromatic oils | Released during burning, these oils have mild anti-inflammatory and antimicrobial properties |
| Mineral content | Mugwort contains trace elements that may be absorbed through the skin during treatment |
The finest moxa wool comes from Qichun County in Hubei province, where the mugwort has been cultivated for moxibustion for over 1,500 years. Premium moxa is aged for three years, producing a golden-yellow wool that burns with minimal smoke and a pleasant, herbal aroma.
What Moxibustion Treats
In TCM theory, moxibustion is indicated for conditions caused by cold, dampness, or deficiency:
| Condition | TCM Explanation | Western Understanding |
|---|---|---|
| Chronic fatigue | Yang deficiency; the body’s warming energy is depleted | May improve mitochondrial function and circulation |
| Menstrual cramps | Cold in the uterus; blood stagnation due to low temperature | Heat relaxes smooth muscle, reducing cramping |
| Digestive weakness | Spleen yang deficiency; the digestive fire is low | May improve gut motility and digestive enzyme activity |
| Joint pain | Cold-damp bi syndrome; pathogenic cold in the joints | Heat increases blood flow and reduces inflammation |
| Breech pregnancy | Used at BL67 point to stimulate fetal movement | Clinical trials show 60–70% success rate for version |
The Olympic Connection
The 2016 Olympics brought moxibustion (and cupping) to global attention when American swimmer Michael Phelps and other athletes appeared with circular marks on their bodies. The marks were from cupping, but many athletes also used moxibustion for:
- Pre-competition muscle warm-up
- Post-training recovery
- Chronic shoulder and back pain
- Stress reduction
The rationale is practical: moxibustion increases local blood flow, relaxes muscle tissue, and may accelerate recovery between training sessions. Whether the TCM theory is correct or not, the physiological effects are measurable.
Safety and Contraindications
Do:
- Seek treatment from a licensed TCM practitioner
- Ensure proper ventilation (moxa smoke can irritate sensitive lungs)
- Stay hydrated before and after treatment
Don’t:
- Use moxibustion on the face, genitals, or major blood vessels
- Use on areas with reduced sensation (risk of burns)
- Use during acute fever or inflammatory conditions
- Use on patients with diabetes (impaired healing increases burn risk)
Side Effects
The most common side effect is mild skin redness, which typically fades within hours. In rare cases, blistering can occur with direct moxibustion. Proper technique and practitioner training minimize these risks.
Self-Care at Home
Indirect moxibustion can be practiced at home with moxa sticks available from TCM suppliers. The safest points for beginners:
- Zusanli (ST36): Four finger-widths below the kneecap —boosts energy and immunity
- Guanyuan (CV4): Three finger-widths below the navel —warms the core
- Shenque (CV8): Center of the navel —aids digestion
Hold the lit moxa stick 2–3 cm above the point, moving slowly in circles until the skin feels pleasantly warm (not hot). Each point for 5–10 minutes.
Related Questions
Explore Further
- Cupping Therapy: The Other Olympic Treatment