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Irritable Bowel Syndrome (IBS)

IBS is a common, long-lasting problem with how the gut and brain work together. It causes belly pain with diarrhea, constipation or both, but it doesn’t damage the bowel — and diet changes, medicines and gut-directed therapies can help. Bleeding, weight loss or symptoms that start after 50 need a doctor’s check.

Call 911 or go to the emergency room if:

See a doctor promptly — these point to something other than IBS — if you have:

What is IBS?

Irritable bowel syndrome is a group of symptoms that happen together: repeated pain in your belly and changes in your bowel movements — diarrhea, constipation, or both. With IBS you have these symptoms without any visible signs of damage or disease in your digestive tract (NIDDK). Bloating, a feeling of not having finished a bowel movement, and whitish mucus in the stool are also common (NIDDK). Symptoms usually come and go over years, in flare-ups lasting days, weeks or months (NHS). IBS can be painful, but it doesn’t damage your digestive tract (NIDDK), isn’t life-threatening and doesn’t raise your cancer risk (ACG).

A problem of gut-brain interaction

Doctors now call IBS a disorder of gut-brain interaction — a problem with how your brain and gut work together. It can make your gut more sensitive, so you feel more pain and bloating, and change how the bowel muscles contract (NIDDK). Some people feel pain when a normal amount of gas or stool is present (NIDDK). Mental health therapies, such as cognitive behavioral therapy and gut-directed hypnotherapy, can improve IBS symptoms (NIDDK).

No one is sure what causes IBS. Problems that may play a part include difficult early-life events such as abuse, depression, anxiety, gut infections, small intestinal bacterial overgrowth, food intolerances and genes (NIDDK). Flare-ups may be triggered by alcohol, caffeine, spicy or fatty food, stress and anxiety, or regular antibiotic use (NHS). In the past, IBS was called colitis, mucous colitis, spastic colon or nervous colon (NIDDK) — confusing, because true colitis is inflammation (see IBS or IBD? below).

The three types: IBS-C, IBS-D and IBS-M

Doctors sort IBS by your stools on the days when your bowel movements are abnormal (NIDDK):

  • IBS with constipation (IBS-C): more than a quarter of stools are hard or lumpy, and less than a quarter are loose or watery.
  • IBS with diarrhea (IBS-D): more than a quarter of stools are loose or watery, and less than a quarter are hard or lumpy.
  • IBS with mixed bowel habits (IBS-M): more than a quarter are hard or lumpy and more than a quarter are loose or watery.

Your type matters because some medicines work only for one type, or make another worse (NIDDK).

How common is IBS?

Studies suggest about 12 percent of people in the United States have IBS. Women are up to two times more likely than men to develop it, and people younger than 50 are more likely to develop it than people older than 50 (NIDDK). The American College of Gastroenterology says 10 to 15 percent of U.S. adults are thought to have IBS symptoms, yet only 5 to 7 percent have been diagnosed (ACG).

Health problems that often come with IBS

People with IBS often also have chronic pain conditions such as fibromyalgia, chronic fatigue syndrome and chronic pelvic pain; digestive problems such as dyspepsia (indigestion) and gastroesophageal reflux disease; and mental health conditions such as anxiety and depression (NIDDK); see our Digestion guide. For constipation and diarrhea in general, see Bowel Problems.

Side by side

Six approaches compared

For every condition we look at the same six approaches: what each involves, what it typically costs, and what a patient can realistically expect.

ApproachWhat it involves Estimated costWhat to expect
Conventional medicine (AMA) A confident diagnosis with limited tests; diet changes (soluble fiber such as psyllium, a limited low-FODMAP trial with a dietitian); medicines matched to your IBS type (antispasmodics for pain; laxatives, linaclotide or lubiprostone for IBS-C; rifaximin, eluxadoline or loperamide for IBS-D; low-dose antidepressants as neuromodulators for pain); gut-directed CBT or hypnotherapy. Cost estimate being researched. No single diet or medicine works for everyone, and you may need to try a few. Most people diagnosed with IBS can control their symptoms with diet, stress management, probiotics and medicine.
Chiropractic Spinal adjustments are sometimes offered for IBS, but this is not a recognized IBS treatment. First visit about $90–$200 and follow-ups about $55–$100 without insurance. Medicare covers only spinal adjustments for subluxation. We found little research: one case report and one small trial of a Chinese spinal technique. There is no good evidence it helps IBS.
Acupuncture Needling, usually as a course of weekly or more frequent sessions, often alongside usual care. About $125–$230 for a first private visit and $90–$185 for follow-ups; community clinics about $50–$90. Medicare covers acupuncture only for chronic low back pain. Mixed. A Cochrane review found no benefit over sham (fake) acupuncture, but some trials comparing it with usual care or medicines found people felt better.
Herbal medicine Enteric-coated peppermint oil capsules; probiotics; STW 5 (Iberogast); psyllium fiber. Cost estimate being researched. Peppermint oil has the best evidence and is included in ACG guidance, though the evidence is low quality. Probiotic results are mixed. STW 5 has rare liver injury reports. Check interactions first.
Massage therapy Abdominal massage for constipation; Tuina (Chinese therapeutic massage) has been studied in China. At one national chain, about $125–$160 for a 60-minute massage without a membership; memberships about $70–$90 a month. Limited. Abdominal massage may ease chronic constipation in small, varied studies. Little good research in IBS itself.
MBHA Wellness Coach A food and symptom diary, regular unhurried meals, sleep, exercise, stress management, and support through a dietitian-led low-FODMAP diet and reintroduction. Cost estimate being researched. Research suggests activity, less stress and enough sleep may help IBS symptoms. Coaching supports, but doesn’t replace, a diagnosis and treatment.

Approach 1 of 6

Conventional medicine (AMA)

No single diet or medicine works for everyone (NHS), and you may need to try a few treatments (NIDDK). Most people diagnosed with IBS can control their symptoms with diet, stress management, probiotics and medicine (MedlinePlus).

1. Diet

  • Soluble fiber. Research suggests soluble fiber — in beans, fruit and oat products — helps IBS more than insoluble fiber. Add it slowly, since too much at once can cause gas (NIDDK). ACG lists psyllium as an option (ACG); see the herbal section.
  • A limited low-FODMAP trial. FODMAPs are carbohydrates that are hard to digest, found in foods such as apples, pears, garlic, onions, beans, milk products, wheat, honey and sweeteners ending in “-ol.” You cut them back for a few weeks, then, if symptoms improve, slowly add foods back — many people tolerate some (NIDDK). The ACG guideline recommends a limited trial of a low-FODMAP diet to improve overall IBS symptoms (ACG guideline, 2021). A dietitian is often helpful, because these diets can be complicated, limiting and frustrating (ACG).
  • Gluten. Some people with IBS feel worse after gluten without having celiac disease, so your doctor may suggest a trial without it (NIDDK). Ask about a celiac blood test before you cut out gluten: it is ideally done while you are still eating it (Lacy & Patel, 2017).

2. Medicines, matched to your type

Follow your doctor’s instructions and ask about side effects (NIDDK). We don’t list doses.

3. Gut-directed talking therapies

Mental health therapies can improve IBS symptoms. Cognitive behavioral therapy (CBT) helps change thought and behavior patterns; in gut-directed hypnotherapy, a therapist uses a relaxed, focused state to ease symptoms (NIDDK). The ACG guideline suggests gut-directed psychotherapy to treat overall IBS symptoms (ACG guideline, 2021). A 2020 review of 41 studies (4,072 people) found gut-directed hypnotherapy improved symptoms or pain more than education, and about as well as CBT or stress management; in hard-to-treat IBS, CBT and gut-directed hypnotherapy helped most over the long term (NCCIH).

What it costs

Prescription medicines, dietitian visits and gut-directed therapy: cost estimate being researched.

Find a medical doctor in our directory

Approach 2 of 6

Chiropractic

Chiropractic care is not a recognized treatment for IBS, and the research is thin. A PubMed search turned up only two studies that tested a spinal treatment for IBS:

  • A 2024 case report described one man with long-standing IBS whose pain and diarrhea improved after five physical therapy visits and three chiropractic sessions; the authors call it limited as a single case (Remsburg et al., 2024). One case can’t show which treatment, if any, caused the change.
  • A 2013 trial in China (60 people) compared five sessions of a traditional Chinese spinal manipulation technique with an antispasmodic medicine and reported better symptom scores with manipulation (Xing et al., 2013). It did not compare manipulation with a sham treatment, and we found no larger trials confirming it.

Tell any chiropractor about the medicines and supplements you take (NCCIH), and don’t let care delay a medical check of any warning sign above.

Safety

Mild, short-lived side effects such as soreness, stiffness or headache are common after spinal manipulation; serious problems, including strokes involving neck arteries, are very rare (NCCIH).

What it costs

Without insurance, a first chiropractic visit commonly runs about $90–$200 and follow-ups about $55–$100 (The Pricer). Medicare Part B covers only spinal adjustments to correct a subluxation, so it won’t pay for IBS care (Medicare.gov).

Find a chiropractor in our directory

Approach 3 of 6

Acupuncture

The research on acupuncture for IBS is mixed: real acupuncture does not beat sham (fake) acupuncture, but in studies comparing it with medicines, people felt better with acupuncture (NCCIH).

What the research says

  • Against sham: a 2012 Cochrane review of 17 trials (1,806 people) found that in the sham-controlled trials, which were at low risk of bias, acupuncture did not improve symptom severity or quality of life more than sham (Cochrane review, 2012). A U.S. trial of 230 adults also found no significant difference from sham, though both groups improved more than a waitlist (Lembo et al., 2009). A 2019 review agreed but found some evidence for acupuncture as an add-on to other treatment (NCCIH).
  • Against medicines or usual care: in the Cochrane review, Chinese trials favored acupuncture over antispasmodic drugs, but they weren’t blinded, and patients’ expectations may explain the difference (Cochrane review, 2012). A 2020 trial at 7 hospitals in China (531 people with IBS-C or IBS-D) found 18 acupuncture sessions over 6 weeks reduced symptom scores more than the laxative or antispasmodic it was compared with, with effects lasting up to 12 weeks (Pei et al., 2020). In a UK primary-care trial (233 people), adding 10 weekly sessions to usual care helped more than usual care alone at 3 months, and the benefit largely held at 12 months (MacPherson et al., 2012), but the difference was no longer significant at 2 years (MacPherson et al., 2017).

ACG’s patient page lists acupuncture among techniques that may help (ACG). If you try it, use it alongside medical care.

Safety

Side effects in the Lembo trial were mild (Lembo et al., 2009). When not delivered properly, acupuncture can cause serious harm such as infections or punctured organs. The FDA requires needles to be sterile and single-use, and most states license acupuncturists (NCCIH).

What it costs

Private sessions run about $125–$230 for a first visit and $90–$185 for follow-ups; community clinics charge about $50–$90 (The Pricer). Medicare Part B covers acupuncture only for chronic low back pain (Medicare.gov).

Find an acupuncturist in our directory

Approach 4 of 6

Herbal medicine

Apart from peppermint oil, the evidence on herbal products for IBS is too limited for firm conclusions (NCCIH). We don’t list doses or brands — follow the label or your provider’s advice.

Enteric-coated peppermint oil

  • A 2022 review of 10 studies (1,030 people) found it better than placebo for overall symptoms and belly pain, with more side effects — mostly mild reflux and indigestion (NCCIH).
  • The ACG’s 2021 guideline includes peppermint oil, but on low-quality evidence; one 2021 trial (133 people) found no difference from placebo, and long-term benefit is unknown (NCCIH).
  • Safety: side effects can include reflux, heartburn, belching and burning around the anus. People with a hernia or gastroesophageal reflux disease shouldn’t take it, especially at high doses (NCCIH) — see our Acid Reflux guide.

Probiotics

  • Some evidence suggests certain probiotics may improve IBS symptoms, but it isn’t conclusive, and the ACG guideline found not enough strong evidence to recommend them (NCCIH). NHS suggests trying probiotics for a month (NHS).
  • Safety: side effects in IBS are usually minor, such as cramping or nausea, but serious problems, including infections, have rarely been reported, and the risk is higher in people who are seriously ill or have a weakened immune system (NCCIH). Talk with your doctor before starting one (NIDDK).

STW 5 (Iberogast)

Psyllium and interactions

Psyllium, a bulk-forming fiber, shouldn’t be taken within 3 hours of digoxin, aspirin or nitrofurantoin, or for more than a week unless your doctor says so (MedlinePlus). Supplements can interact with medicines and may contain ingredients not on the label (NCCIH, NCCIH); if you take any medicine, ask your provider before using an herbal product (NCCIH).

Approach 5 of 6

Massage therapy

Massage research in IBS is limited; most concerns abdominal massage for constipation.

What the research says

  • Constipation: a 2025 review of 23 studies (1,431 adults with chronic constipation) found abdominal massage increased bowel movements by about one and a half a week and eased symptoms, but didn’t reduce laxative use; the studies varied widely, some were not randomized, and they weren’t limited to IBS (Huang et al., 2025).
  • Tuina (Chinese therapeutic massage): a 2020 review of 8 small Chinese trials (545 people) found Tuina added to routine treatment may help IBS-D more than routine treatment alone, but the trials’ quality was unclear and the authors called for larger, better trials (Bu et al., 2020).
  • Reflexology: a small trial (34 people) found foot reflexology no better than an ordinary foot massage for IBS pain, bowel habits or bloating (Tovey, 2002).

Stress can trigger IBS flare-ups (NHS), but we found no strong evidence that massage treats IBS. Sudden or severe belly pain needs urgent medical care, not massage (NHS).

Safety

The risk of harm from massage appears low, but rare serious side effects such as a blood clot, nerve injury or bone fracture have been reported, some with vigorous techniques or in older adults (NCCIH).

What it costs

Prices vary by location. At one national chain, franchise price lists show about $125–$160 for a 60-minute massage for non-members and about $65–$90 for members, whose memberships run about $70–$90 a month (The Pricer).

Find a massage therapist in our directory

Approach 6 of 6

MBHA Wellness Coach

An MBHA Wellness Coach can help you find triggers and stick with your doctor’s or dietitian’s plan. Research suggests more physical activity, less stress where possible, and enough sleep may help IBS symptoms (NIDDK).

A food and symptom diary

Write down what you eat and drink and any symptoms, and avoid what triggers your IBS (NHS); the notes help at your appointment, too (NHS). A coach can help you spot patterns — and warning signs that need a doctor.

Regular, unhurried meals

  • Don’t delay or skip meals, and don’t eat too quickly (NHS).
  • Go easy on fatty, spicy and processed foods; NHS suggests no more than 3 caffeinated drinks and 3 portions of fresh fruit a day, and not drinking lots of alcohol or fizzy drinks (NHS).
  • Drink plenty of fluids, especially if you have diarrhea, to avoid dehydration (NHS).

Working through a low-FODMAP diet

The low-FODMAP diet means cutting back for a few weeks, then, if symptoms improve, slowly adding foods back, because you may be able to eat some without symptoms (NIDDK). It is best done with a dietitian (ACG). If you find you need to avoid lots of foods, see your doctor (NHS). A coach can help you plan meals and track reintroductions.

Move, sleep and manage stress

  • Get plenty of exercise and find ways to relax (NHS). ACG lists exercise, stress management, good sleep, deep breathing, meditation, yoga and mindfulness among things that may help (ACG).
  • The evidence is modest: yoga studies are very low quality, meditation research is inconclusive, and one review found relaxation therapy didn’t help. These approaches generally have good safety records (NCCIH).
  • If stress, anxiety or low mood are part of the picture, a coach can help you ask your doctor about gut-directed CBT or hypnotherapy (see the conventional section), or about care for depression.

Another approach

How IBS is diagnosed

There is no single test that proves someone has IBS (ACG). Doctors diagnose it mainly from your symptoms, medical and family history and a physical exam, and order tests only in some cases to rule out other problems (NIDDK). The ACG guideline suggests this “positive” approach — diagnosing IBS from its pattern rather than by excluding everything else first — so the right treatment can start sooner (ACG guideline, 2021).

The Rome criteria

Doctors use symptom criteria developed by an international panel of experts and revised several times; the current version is called Rome IV (Lacy & Patel, 2017). In plain terms, your doctor may diagnose IBS if you have belly pain, on average at least once a week in the last 3 months, together with two or more of these (NIDDK, Lacy & Patel, 2017):

  • the pain is related to bowel movements — for example, it gets better or worse after going;
  • a change in how often you have bowel movements;
  • a change in how your stools look.

Symptoms should have started at least 6 months ago, though your doctor may diagnose IBS sooner (NIDDK). Without belly pain, IBS is unlikely to be the diagnosis (Lacy & Patel, 2017).

Your visit

Expect questions about your symptoms, family history, medicines, recent infections, stressful events and what you eat, and an exam of your belly (NIDDK). Writing your symptoms down beforehand helps (NHS).

Limited tests

If you meet the criteria, have a normal exam and no warning signs, repeated testing is discouraged; a clear diagnosis, explanation and reassurance are part of good care (Lacy & Patel, 2017). Colorectal cancer screening is a separate question — see the screening section of our Bowel Problems guide.

Another approach

IBS or IBD? How they differ

The names sound alike, but irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD) are different conditions, even though some symptoms are similar (NHS). IBD is a group of lifelong diseases — mainly Crohn’s disease and ulcerative colitis — in which the body’s defense system attacks healthy bowel cells, causing inflammation and damage that doesn’t go away on its own (CDC).

  • Alike: both are long-term gut conditions that can lower quality of life and cause belly pain and changes in bowel movements (CDC).
  • Different: IBS does not cause inflammation — the most important difference — is not autoimmune, and does not physically damage the digestive tract (CDC). IBD can cause anemia, joint pain, skin and eye problems, and a higher risk of colon and rectal cancer (CDC).
  • Symptoms of IBD can include blood in your stool, bleeding from your bottom, diarrhea lasting more than 4 weeks, feeling tired all the time and losing weight without trying (NHS). A fecal calprotectin stool test can help tell the two apart (ACG guideline, 2021).
  • You can have both. It is possible to have IBS and IBD at the same time (CDC), so new or different symptoms deserve a fresh look.

Member stories

Living with Irritable Bowel Syndrome (IBS)? Share your experience

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Sources

This page is for education only and is not medical advice. Costs are typical U.S. ranges and estimates; yours will depend on your provider, location and insurance. Talk with your doctor before starting, stopping or combining any treatment. In an emergency, call 911. See our disclaimer.

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