What cupping therapy is and how it works

Cupping therapy involves placing cups—usually made of glass, bamboo, or silicone—on the skin, then creating a vacuum inside them. The vacuum pulls the skin and tissue upward into the cup. Practitioners leave the cups in place for several minutes, move them across the skin with oil (a technique called sliding cupping), or use them in a pulsing motion. The goal is to increase blood flow to the area, reduce muscle tension, and trigger the body's healing response.

The practice originated in traditional Chinese medicine and has been used for thousands of years. Modern cupping often combines the traditional approach with Western anatomy knowledge. Cupping typically leaves temporary circular marks on the skin—these fade within days to weeks and are not bruises but rather the result of the suction bringing blood vessels closer to the surface.

Key Takeaways

  • Cupping may reduce muscle pain and tension in the short term, but most evidence comes from small studies and animal research rather than large human trials.
  • The temporary skin marks cupping creates are not bruises and fade on their own within one to three weeks.
  • Cupping appears safest when performed by a trained practitioner and should be avoided on thin skin, over bones, or if you take blood thinners.
  • Research on cupping for conditions like migraines, asthma, or fertility remains preliminary, and stronger evidence is needed before drawing firm conclusions.

What the research shows about muscle pain and tension

The strongest evidence for cupping involves muscle pain and stiffness. Several small human trials have found that cupping reduces pain in the neck, lower back, and shoulders in the short term—usually measured within days or weeks after treatment. A 2020 review in the Journal of Traditional and Complementary Medicine looked at 19 studies and found cupping reduced pain more than no treatment, though the studies were small and used different methods, making direct comparison difficult.

However, the effect size matters. Most studies show cupping reduces pain by a modest amount—roughly comparable to what you might see from massage or heat therapy. The research does not show cupping works better than other common approaches to muscle tension. Additionally, many studies did not include a control group that received a fake cupping treatment (sham cupping), so some benefit may come from the attention, expectation, or the massage-like effect of the practitioner's hands rather than the suction itself.

Pain relief from cupping tends to be temporary. Studies typically measure improvement for a few weeks after treatment. Whether the benefit lasts longer or whether repeated sessions build lasting change is not well established in the research.

Evidence for other conditions remains preliminary

Cupping is marketed for many conditions beyond muscle pain—including migraines, asthma, fertility problems, and digestive issues. The research on these uses is much weaker. Most studies are small, conducted in countries where cupping is traditional (and where publication bias toward positive results may be higher), and lack rigorous control groups.

For example, a few small trials suggest cupping may reduce migraine frequency, but the studies involved fewer than 100 people total and did not compare cupping to standard migraine treatments. For asthma, the evidence is even thinner—mostly animal studies and case reports rather than human trials. For fertility and sexual function, the research consists mainly of animal studies and traditional claims without solid human data.

This does not mean cupping cannot help with these conditions. It means the current evidence is not strong enough to say whether it does. If you are considering cupping for a condition beyond muscle tension, discuss it with your doctor first, especially if you are being treated for that condition already.

How cupping compares to other pain-relief approaches

Cupping, massage, heat therapy, and stretching all aim to reduce muscle tension and pain. Head-to-head studies comparing cupping directly to these alternatives are rare. The few that exist suggest cupping and massage produce similar short-term pain relief. One small trial found cupping plus exercise worked better for lower back pain than exercise alone, but it did not compare cupping to massage plus exercise.

The practical difference often comes down to availability, cost, and personal preference. Cupping sessions typically cost $50 to $150 per visit and are not usually covered by insurance. Massage, physical therapy, and heat are often more accessible and have stronger evidence for long-term benefit when combined with exercise and movement.

Safety, side effects, and who should avoid cupping

Cupping is generally safe when performed by a trained practitioner, but it does carry some risks. The most common side effect is temporary skin marks and mild bruising that fade within one to three weeks. Some people report mild discomfort during or after treatment, or temporary skin irritation.

Cupping should be avoided or used with caution in these situations: thin or fragile skin (common in older adults or people on certain medications), over bones or joints, on areas with active wounds or infections, if you take blood thinners (cupping increases bleeding risk), during pregnancy, or if you have a bleeding disorder. Burns are possible if fire cupping (using flame to create suction) is performed incorrectly, though this is less common with modern glass or silicone cups.

Infection is rare but possible if cups are not properly sterilized. Choose a practitioner who uses single-use cups or sterilizes reusable cups between clients. If you develop signs of infection—increasing redness, warmth, pus, or fever—contact your doctor.

What happens during a cupping session

A typical cupping session lasts 20 to 30 minutes. The practitioner applies oil or lotion to the skin, then places cups on the area being treated. For stationary cupping, cups stay in one spot for 5 to 15 minutes. For sliding cupping, the practitioner moves the cups across the skin. Some practitioners use fire to create suction in glass cups; others use hand pumps or silicone cups that are squeezed to create a vacuum.

You may feel a pulling sensation and mild discomfort, but it should not be painful. Tell your practitioner if the sensation is too strong. After treatment, the skin will be red or marked. This is normal and temporary. Most practitioners recommend avoiding strenuous exercise, hot showers, and cold exposure for a few hours after cupping.

Questions to ask before trying cupping

If you are considering cupping, ask the practitioner about their training and credentials. Cupping is not licensed or regulated in most U.S. states, so training standards vary widely. Some acupuncturists and massage therapists learn cupping as part of their training; others take standalone courses. Ask how long they have been practicing and whether they have experience with your specific concern.

Also ask what they expect cupping to do for you, how many sessions they recommend, and what the total cost will be. Be cautious of claims that cupping will cure a disease or replace medical treatment. If you have a diagnosed medical condition, talk to your doctor before starting cupping, especially if you are already being treated.

Frequently Asked Questions

Does cupping actually work or is it just placebo?

Cupping likely has some real effect on muscle tension and blood flow, but the benefit is modest and short-term. Whether the effect is larger than placebo is unclear because most studies lack a proper control group. The safest conclusion is that cupping may help with muscle pain in the short term, but it is not a substitute for exercise, physical therapy, or medical treatment.

Why does cupping leave marks on the skin?

The marks are caused by the suction pulling blood vessels closer to the surface of the skin. They are not bruises—bruises form from tissue damage, while cupping marks form from increased blood flow. The marks fade within one to three weeks as the blood reabsorbs.

Is cupping safe if I take blood thinners?

Cupping increases bleeding risk and is generally not recommended if you take blood thinners like warfarin or apixaban. Talk to your doctor before trying cupping if you are on any blood-thinning medication.

How many cupping sessions do I need to see results?

Most studies measure pain relief after one to three sessions. Whether repeated sessions over weeks or months produce better or longer-lasting results is not well studied. Ask your practitioner what they expect after a specific number of sessions and reassess if you do not notice improvement.

Can cupping treat serious conditions like cancer or asthma?

Cupping should not replace medical treatment for serious conditions. While a few small studies suggest cupping may help with asthma symptoms, the evidence is weak. If you have a diagnosed medical condition, work with your doctor on a treatment plan and discuss cupping only as a possible complement, not a replacement.