Can Acupuncture Help With Chronic Inflammation?

Acupuncture does seem to calm inflammation in some people, though usually as a helper to standard treatment rather than a replacement. The effect in people is smaller and less certain than in animal studies, and much of it may come from the experience of treatment rather than the needles themselves.¹ Scientists have also found plausible ways needles could send anti-inflammatory signals through the nervous system, which is why the research keeps going.

What Studies in People Have Found So Far

Doctors often track inflammation with a blood test for C-reactive protein, or CRP, which rises when the body is inflamed. Researchers also measure signalling proteins such as IL-6 and TNF-alpha. CRP is made by the liver in response to inflammation signals, so a routine blood draw can pick it up. IL-6 and TNF-alpha are released by immune cells and sit upstream of CRP. They are mostly measured in research rather than in everyday care.

In people with rheumatoid arthritis, laser acupuncture was followed by lower CRP and IL-6 and lower disease activity scores.² Those scores combine things like the number of tender and swollen joints with how a person rates their own health, and often a blood marker. It is still one set of results, and laser acupuncture uses light instead of needles, so it isn’t identical to what most clinics offer. A review of rheumatoid arthritis studies found nearly all reported some benefit and few side effects.³ In people with depression, adding acupuncture to antidepressants lowered inflammatory proteins and raised calming ones compared with antidepressants alone.⁴

Gut and joint conditions show similar patterns. In a trial of mild to moderate Crohn’s disease, acupuncture eased symptoms and lowered gut inflammation.⁵ Pooled trials in inflammatory bowel disease found lower TNF-alpha and better outcomes, though only four trials with 228 patients were included.⁶ In knee osteoarthritis, 8 weeks of acupuncture lowered inflammatory proteins and markers of cartilage breakdown.⁷

A lower marker is a lab change, not proof you feel better. CRP also rises with a cold or other infection and can shift with weight change or a medicine adjustment, so a single reading is noisy. If you want to track it, ask your doctor to recheck the same marker, ideally at the same lab, before and after a course. Most of these trials compared people before and after treatment rather than against a fair comparison group, a weakness the placebo section returns to.

Most of the benefit was also seen alongside drugs, not instead of them. Stopping prescribed anti-inflammatory treatment to try acupuncture isn’t supported by any of this. The realistic hope is a modest extra improvement in symptoms.

Where the Results Are Mixed or Weak

Obesity-related inflammation is where the picture gets murky. In obese adults, body and ear acupuncture lowered CRP, but CRP fell just as much in people given fake treatment.⁸ So the needles changed some immune markers without showing a true anti-inflammatory effect in these trials.⁹ Weight, activity and diet remain the better-supported ways to lower inflammation linked to obesity.

One uncontrolled study in obese patients did report falls in TNF-alpha, IL-6 and CRP.¹⁰ Uncontrolled results can mislead. People often join a trial when their symptoms are at their worst, and symptoms tend to drift back toward their usual level on their own, which can look like a treatment effect. Weight loss or diet changes during a study can lower CRP independently, particularly in obesity, because fat tissue itself produces inflammatory signals. With no comparison group, nobody can tell which of these, or the needles, caused the drop.

Reviewers also rate much of the evidence as weak. Reviews of ankylosing spondylitis studies rated it low to moderate quality.¹¹ Ulcerative colitis trials were few and generally poorly designed, and reviewers called for better trials.¹² A positive headline about acupuncture and inflammation is often built on small studies. When you see one, check whether the study was in people or animals, whether there was a fake-treatment group, and how many people took part.

Is It Just Placebo

Sham acupuncture uses needles that don’t penetrate or are placed off the usual points, so people can’t tell they’re not getting the real thing. Some sham needles are blunt or retract into the handle, touching the skin without entering it. Others are real needles at non-standard spots. The aim is that nobody can tell which they received, which lets a trial compare the needles against belief alone. Even light touch or shallow pricking may trigger some nerve response, so fake acupuncture isn’t guaranteed to be completely inactive.

The type of comparison changes the size of the result. In heart disease trials, acupuncture’s drop in CRP was about five times larger against no-needle comparisons than against fake acupuncture.¹³ Open comparisons can’t separate the needles from expectation, attention, and other treatments given at the same time.¹⁴ Against fake acupuncture, both groups share those factors, and only the difference due to needle placement and depth remains. Across many trials, fake and real acupuncture changed most inflammation markers, including CRP and IL-6, about equally.¹⁵ Feeling better from calm, attentive care is still real relief, but it suggests the needle points may matter less than advertised, and it argues against paying for long, expensive courses on the promise of lowering inflammation.

There are hints that needles can do something specific. In people with high blood pressure, needling one leg point improved blood-vessel function while placebo didn’t, and a separate trial found blood pressure fell about 9 points more than in the comparison group. These are small trials, so treat them as hints.

How Needles Might Calm Inflammation

The best-studied idea involves the vagus nerve, which runs from the brain to the gut and other organs and can tell immune cells to make fewer inflammatory signals.¹⁶ It works like a two-way cable. A needle at a point is thought to send a signal up to the brain, which then travels back down the nerve to immune cells in places like the spleen and gut. Some points, such as one below the knee, can raise vagus nerve activity in animals and people.¹⁷ In mice with pancreatitis, electroacupuncture eased inflammation, but not when the vagus nerve was cut.¹⁸ That suggests the nerve is a necessary link rather than a bystander.

Local and hormonal effects may add to this. In people, needling raises a natural chemical that damps pain and inflammation in the tissue around the needle during a session.¹⁹ The body releases this chemical in damaged tissue, and needling is thought to cause a small disturbance that prompts it. In mice that rise is far larger, about 24-fold,²⁰ a reminder that the same mechanism may be weaker in humans.

Chronic stress raises hormones such as cortisol that can push inflammation in unhelpful directions over time. In stressed rats, electroacupuncture blocked the rise in stress hormones,²¹ which hints at a second route that doesn’t depend on the needle site. Animal work also shows changes in gut bacteria that make anti-inflammatory compounds.²² That may link the gut to the rest of the body, though it remains early work.

Animal studies use strong, controlled stimulation and induced illness, while human chronic disease is slower and more varied. The mechanisms explain why acupuncture could work, not how much it will.

Manual Versus Electroacupuncture

Electroacupuncture passes a mild electric current between needles, while manual acupuncture uses twisting by hand. In knee osteoarthritis, both lowered inflammation over 8 weeks, with electroacupuncture lowering TNF-alpha a bit more.²³ Researchers think hand needling acts mainly near the needle, while electrical stimulation acts more on the nervous system as a whole.²⁴

The extra drop in TNF-alpha was small, and one marker moving a bit more doesn’t prove better symptoms. It is also a single condition, so it can’t be generalised to every inflammatory disease.

The two feel different. With manual acupuncture, the practitioner may twist or lift the needle gently to produce a dull ache or heaviness around it. With electroacupuncture, clips connect pairs of needles to a small device, and the current is usually felt as tapping, buzzing or tingling. The strength is turned up until it is noticeable but not painful, and you can ask for it to be reduced. Ask a practitioner which they offer and why, since neither has proven superior for inflammation overall.

How Many Sessions Studies Used

Gut studies used sessions 3 times a week for 12 weeks.²⁵ Stroke studies most often used 5 to 7 sessions a week for 2 to 4 weeks, with needles left in about 30 minutes.²⁶ Researchers chose these schedules for their own conditions, so they don’t show that either pattern is ideal for inflammation.

A single session is unlikely to change inflammation markers. CRP reflects a slow, ongoing process, and the trials that showed lower markers came after weeks of repeated treatment. One session might ease how you feel, but that is different from changing inflammation.

If you want to try a course, agree a fixed number of sessions before starting. Track one symptom and, if your doctor agrees, one marker. Stop if nothing changes after the agreed course, and factor in cost, since frequent sessions add up.

Safety and Using It With Your Treatment

Acupuncture has fewer side effects than many drugs.²⁷ Common ones include bruising, pain or bleeding at the site, fainting, and fatigue, and sometimes a temporary flare of symptoms.²⁸ Bruising or a small spot of bleeding is the most usual and generally fades within days. Some people feel faint during or just after treatment, so it helps to eat beforehand and tell the practitioner if you feel dizzy. A flare after a session is worth mentioning at the next visit.

Rare serious harms include a collapsed lung and infections such as hepatitis B from unclean needles.²⁹ A collapsed lung comes from needling too deeply near the chest, which is why training matters. Choose a licensed practitioner who uses single-use sterile needles. Needles should come out of a sealed package and go into a sharps container after one use.

Some people should take extra care. Blood thinners can make bruising and bleeding more likely, and weakened immunity raises infection risk. Pregnant people should ask about points to avoid, and anyone with a pacemaker should tell the practitioner before electroacupuncture.

Some studies suggest acupuncture works better alongside anti-inflammatory painkillers, though one neck pain trial didn’t find this.³⁰ Tell your doctor you’re trying it, and keep taking your prescribed medicine.