Cupping therapy benefits: the marks, the claims, the evidence

Cupping therapy is a traditional suction practice in which cups are set on the skin and the air inside is drawn out, pulling the tissue upward — on our menu, an add-on that runs 20 minutes for $40, or folded into a full massage of 60 minutes or 90 minutes. Every few summers an Olympic swimmer climbs out of the pool with a constellation of purple circles across his shoulders, and the world's search engines light up with the same question: what are those, and do they do anything? The first half has a clean, satisfying answer. The second half has an honest one — rarer, and far more useful.

This is that honest answer. What follows draws almost entirely on the National Center for Complementary and Integrative Health — the NIH agency whose job is to evaluate practices exactly like this one — which, carefully hedged, will tell you why cupping marks you, what it risks, and what the evidence does and does not support. We run a spa that offers cupping massage. We'd rather you book it knowing all of this than none of it.

The evidence position, up front

Start with the strangest fact about NCCIH's cupping fact sheet: it contains no benefits section worth the name. It describes what cupping is, how the suction is created, and what side effects have been documented — and it lists no conditions cupping has been shown to treat and cites no trials showing that it works. For chronic pain, for recovery, for circulation, for anything.

That absence is not an oversight. NCCIH publishes detailed evidence reviews for acupuncture, massage, tai chi, yoga, and meditation, carefully grading what each may and may not help. When the same institution reaches cupping and declines to name a single benefit, the silence is the finding.

None of which means cupping does nothing — it means nobody has shown, to a scientific standard, what it does beyond its visible effect on the skin. Plenty of people find the sensation deeply relaxing, and relaxation is a perfectly good reason to book a spa service. It is just a different claim from “treats back pain,” and this page will keep the two apart.

What cupping actually is

Per NCCIH, cupping is a practice used in traditional medicine in several parts of the world, including China and the Middle East. The cups are glass, ceramic, bamboo, or plastic. Suction is created one of two ways: a flame is briefly applied to remove the oxygen inside the cup before it is placed on the skin, or a suction device is attached after placement. Then the cup sits, pulling skin and superficial tissue upward, usually for several minutes.

Cupping therapy comes in 2 styles, and the single most important distinction between them is one NCCIH covers in a sentence: whether the skin is pierced.

Wherever you book — with us or anywhere else — know which style you're getting before you're on the table. We offer dry-style cupping only, folded into a full massage.

What do cupping marks mean?

Here is the clean answer to the first half of the swimmer question. The cup's negative pressure expands and ruptures tiny blood vessels under the skin, and blood leaks into the surrounding tissue. That is the definition of a bruise. Cupping therapy marks are bruises produced by pull instead of impact — round because the cup is round, darker where suction was strongest, and on their own schedule to fade, typically over days to a couple of weeks like any other bruise.

What they are not is toxins. Nothing is drawn out through intact skin, no matter how dramatic the color. NCCIH's fact sheet describes the suction mechanism and never mentions toxins — the detox story is marketing, not physiology. NCCIH does add one genuinely practical note: the marks' origin should be explained to health care providers, so they aren't mistaken for signs of physical abuse.

The risks NCCIH does document

For a practice with no demonstrated benefits, cupping therapy has a surprisingly specific list of documented harms — roughly 4 groups of them, from skin discoloration to bloodborne disease, with hepatitis B and C the 2 diseases NCCIH names outright. Most are minor and cosmetic; a few are not.

The TCM context — and the acupuncture contrast

Cupping therapy is usually sold under the banner of traditional Chinese medicine, alongside acupuncture, tai chi, gua sha, and herbal formulas. The banner is historically fair — and evidentially misleading, because the evidence is not spread evenly underneath it.

What a real research trail looks like

Acupuncture, the family's best-studied member, shows what a real research trail looks like. NCCIH's TCM overview reports that studies suggest acupuncture stimulates the release of the body's natural painkillers and affects brain areas involved in processing pain, and that it may help ease chronic pain such as low-back pain, neck pain, and osteoarthritis of the knee — while also noting, with equal honesty, that some trials find real and sham acupuncture equally effective, pointing to a placebo component. Hedged, contested, incomplete — but it is an evidence base. Cupping has no comparable mechanism research and no comparable trial record.

What “thousands of years” actually proves

The same overview is a useful corrective to the most common argument for cupping — that thousands of years of use must prove something. Within the one tradition, tai chi tests reasonably well (balance and stability in older adults, knee-osteoarthritis pain, coping with fibromyalgia and back pain), acupuncture tests mixed, and Chinese herbal products remain unproven, with NCCIH stating that because many studies have been of poor quality, no firm conclusions can be made. Same antiquity, sharply different evidence. Longevity proves durability, not efficacy.

Cupping vs massage: an honest comparison

Since cupping therapy is usually bought alongside massage, it's fair to ask how the two compare on evidence. Massage's record is genuinely modest — NCCIH's chronic-pain overview describes short-term relief for low-back pain with low-strength evidence, and benefits for neck pain that depended on sessions being long and frequent enough — but it is a record: pooled trials, dose findings, graded conclusions. Cupping has none of that. (For the fuller massage picture, our evidence review of what massage can and can't do for stress and anxiety walks through it claim by claim.)

Which suggests a clear-eyed way to think about a combined session like the ones on our menu — a 60- or 90-minute full-body massage with 20 minutes of cupping on top: the massage is the evidence-carrying half, and the cupping is an experience — a distinctive sensation with a long tradition, a visible aftermath, and honest uncertainty about anything more. If that reads as a reason to skip it, skip it. If — like many people — you find the pull of the cups uniquely relaxing, book it as exactly that.

Concretely, here is how cupping sits on our menu — three configurations, one fixed truth in each: the cupping portion is always 20 minutes, and the price difference between them is the length of the massage underneath, not the cupping on top.

Before you book: a realistic-expectations checklist

1. 01

   Expect the marks

   Round bruises, days to a couple of weeks to fade, occasionally longer. If you have a wedding, a reunion, or a swim meet coming up, count backward.
2. 02

   Decide dry vs wet in advance

   Know which style a provider practices before the appointment, not during it. Wet cupping is an open-skin procedure with its own risk profile.
3. 03

   Ask about the equipment

   Single-use or sterilized between clients? Per NCCIH, contaminated cups can transmit bloodborne diseases such as hepatitis B and C — this is the single most important screening question.
4. 04

   Ask about credentials

   Many California cities require massage professionals to be CAMTC-certified (California Massage Therapy Council) — you're welcome to ask about your practitioner's credentials when you book, right alongside the equipment question.
5. 05

   Flag skin conditions

   Eczema and psoriasis can flare under suction. Mention any skin condition on the treatment area before the cups come out, and loop in your doctor if you're unsure.
6. 06

   Keep the cups off your scalp

   The rare severe complications in NCCIH's list include bleeding inside the skull after scalp cupping. Broad, fleshy areas — back, shoulders — are the conventional territory.
7. 07

   Keep it complementary

   Cupping is a spa experience, not a treatment plan. Never use it to replace or delay seeing a clinician about pain that persists, worsens, or worries you.

If you're curious anyway

Curiosity is a legitimate reason — most people who try cupping therapy try it once to know what it feels like, and the ones who return come back for the sensation, not a medical claim. If you're local to the Conejo Valley, The Agoura Hills Spa offers exactly the honest version described here: dry-style cupping built into a full massage, either as a 20-minute add-on at $40 or as an 80-minute ($196) or 110-minute ($291) cupping therapy massage — a full 60- or 90-minute massage plus 20 minutes of cupping, with the rest of the menu on the same page. We're open every day from 10 AM to 9 PM. Come for the massage evidence, stay for the circles.