Irritable Bowel Syndrome (IBS): Integrative Care for Stomach Pain, Bloating and Bowel Changes

Are vitamin D and other nutrients low in IBS?

Often: a 2022 systematic review of 26 studies found that people with IBS generally had lower levels of vitamin D, vitamin B2, calcium and iron than people without IBS, and that exclusion diets were linked with lower intake of vitamins B1 and B2, calcium, iron and zinc [5]. Trials of vitamin D supplements in IBS show mixed results.

• Trials that found benefit: a 2022 meta-analysis of 8 studies (685 patients) found that vitamin D improved IBS symptom severity scores [6], and a 2023 meta-analysis of 6 randomised trials (572 patients) found the same [7].
• Studies that disagree: a 2022 meta-analysis of 12 trials (1,331 patients) found that vitamin D improved quality of life but not symptom severity scores [8], and the 2022 trial meta-analysis noted small studies and very different results between them [6].
• What this means for you: check nutrients before and during any exclusion diet, and correct deficiencies under supervision rather than on your own.

What is IBS, what are the types, and how common is it?

IBS is a disorder of gut-brain interaction, according to the American College of Gastroenterology: the gut looks normal on tests, but stomach pain comes with changes in bowel habit. The Rome IV criteria used by doctors describe stomach pain on at least 1 day a week over the last 3 months, linked with opening the bowels or a change in how often or how hard stools are [3].

• Types: IBS with constipation (IBS-C), IBS with diarrhoea (IBS-D) and IBS with mixed bowel habits (IBS-M) [3].
• How common: a 2020 meta-analysis of 57 studies (423,362 adults) found IBS in 9.2% of people by the older Rome III criteria and 3.8% by the stricter Rome IV criteria [4].
• Women and men: in the same meta-analysis, IBS affected 12.0% of women and 8.6% of men [4].

What are the symptoms of IBS?

The main symptoms of IBS are stomach pain or cramps that are often worse after eating and better after opening the bowels, bloating, diarrhoea and constipation, according to the NHS; symptoms come and go in flare-ups, and can be triggered by food or drink [2].

• Other symptoms: tiredness, needing to pass urine often, and sometimes not being able to control the bowels [2].
• Women: IBS is more common in women (12.0% of women and 8.6% of men in a global meta-analysis) [4]; we take periods, pregnancy and menopause into account as each case needs.
• Anxiety and low mood: common alongside IBS (see below).

What causes IBS?

No single cause is known, according to the NHS: IBS has been linked to food passing through the gut too quickly or too slowly, gut infections, an oversensitive gut, stress and a family history of IBS [9]. Research points to:

• Gut infections: in a 2017 meta-analysis of 45 studies (21,421 people), 10.1% developed IBS within a year of a gut infection, and 41.9% of people whose infection was caused by parasites or protozoa developed IBS [10].
• Small intestinal bacterial overgrowth (SIBO): SIBO was found far more often in people with IBS than in people without it (odds about 3.7 times higher) in a 2020 meta-analysis of 25 case-control studies [11]; see our Gut Dysbiosis & Gut Health page.
• Stress and mood: anxiety and depression occur about 3 times as often in IBS; this shows a link, not which comes first [12].
• Food triggers: such as spicy or fatty food [2].

How is IBS diagnosed?

IBS is diagnosed from symptoms with a few tests: the American College of Gastroenterology suggests a positive diagnosis from symptoms rather than many tests [3]. It also suggests coeliac antibody tests and a stool calprotectin test in people with diarrhoea, and no routine colonoscopy under 45 without warning signs [3]. NICE recommends a full blood count, inflammation markers (ESR or CRP) and coeliac antibody tests [13].

• Calprotectin: a stool test that helps tell inflammatory bowel disease from IBS [14].
• Coeliac test: keep eating gluten until the test is done, because avoiding it can make the result inaccurate, according to the NHS [15].
• Warning signs need further tests (see below) [13][2].

What is the difference between IBS and IBD?

IBS and inflammatory bowel disease (IBD) are different conditions with some similar symptoms, according to the NHS: IBD (Crohn’s disease and ulcerative colitis) causes inflammation and ulcers in the gut, while in IBS the gut has no visible inflammation [16]. A raised stool calprotectin points towards IBD or another cause of gut inflammation rather than IBS [14]. Heartburn and acid reflux are also a different problem; see our Acidity & Hyperacidity page.

What is the treatment for IBS?

IBS treatment usually combines diet and lifestyle changes, regular exercise, medicines for the main symptom and, where needed, gut-focused psychological therapy, according to NICE and the British Society of Gastroenterology [13][17]. There is no single diet or medicine that works for everyone, according to the NHS [18].

• Exercise: the British Society of Gastroenterology advises regular exercise for everyone with IBS [17].
• Medicines: antispasmodics, laxatives for constipation and loperamide for diarrhoea first, then low-dose tricyclic antidepressants, according to NICE [13] (see below).
• Psychological therapy: NICE suggests CBT, hypnotherapy or psychological therapy if medicines have not helped after 12 months [13].

How does Cure4Pain treat IBS?

Cure4Pain looks for the factors that may drive each person’s symptoms, such as infections, SIBO, deficiencies, food triggers and stress, and treats them together: tests first, then diet and gut support, magnesium for constipation, vitamin D therapy, stress and sleep care, moxibustion and a careful review of medicines. Any change to medicines is made under clinical guidance from Team Cure4Pain. We see people with all types of IBS, most often people who also have an autoimmune condition, and people with long-standing stomach pain without a diagnosis. We do not treat sudden or severe stomach pain (see below). The plan includes:

1. Tests first: stool, breath, H. pylori and coeliac tests, and our panel of more than 100 blood measures (see below).
2. Diet: milk and most dairy, wheat or gluten, sugar, processed foods, nightshades and raw foods removed, with home-set curd where it suits the person, cruciferous (Brassica) vegetables such as cabbage and cauliflower generally limited as an observational clinic practice, and the rest tailored to each person (see below).
3. Gut support: Saccharomyces boulardii and broad-spectrum probiotics, prebiotics, digestive enzymes, bile support, glutamine, zinc and thiamine, as on our Gut Dysbiosis page.
4. Magnesium for constipation: magnesium citrate or bisglycinate, set for each person (see below).
5. Supervised-dose vitamin D therapy (Coimbra Protocol-based methods): for most of our IBS patients, with the dose set by condition and severity (see below).
6. Stress, anxiety and sleep: breathing, relaxation, restorative sleep and counselling, with referral to the psychiatrist who works with our team when needed.
7. Moxibustion: including ginger moxibustion at our Mumbai clinic (see below).
8. Medicines: antispasmodics, laxatives, loperamide, low-dose amitriptyline and acid-reducing medicines reviewed case by case by Dr Krushal Pabari.
9. Further tests when needed: Dr Krushal Pabari recommends endoscopy or colonoscopy if something more serious is suspected.

Our gut support, magnesium forms, breathing and relaxation work and moxibustion are clinic practice; individual results vary, and further studies are needed.

What tests does Cure4Pain do for IBS?

Before the first consultation, Cure4Pain arranges the same tests as for gut dysbiosis, or reviews your recent results: stool tests (calprotectin and parasites), a breath test for SIBO, an H. pylori test, coeliac antibody tests and our blood panel of more than 100 measures; the panel is our clinic protocol, not a guideline requirement.

• Blood panel: vitamin D with PTH and calcium, vitamin B12, iron studies, thyroid tests, blood sugar and HbA1c, complete blood count, kidney and liver function, lipid profile, hsCRP and ANA by the IFA method; a positive ANA alone does not mean you have an autoimmune disease.
• Guidelines differ: NICE does not consider stool parasite tests or breath tests necessary to confirm IBS [13], and the American College of Gastroenterology advises against routine stool tests for infections in everyone with IBS [3]. We use them to look for factors that change treatment, because IBS can follow a gut infection, including parasite infections [10], and SIBO is more common in IBS [11].

In India, the panel is available at a lower cost through our patient portal, with home collection across India. Outside India, the tests are done at a laboratory near you and reviewed with you in the consultation.

How does Cure4Pain use vitamin D therapy in IBS?

Cure4Pain uses supervised-dose vitamin D therapy for most of its IBS patients, as part of its integrative medicine approach, with the dose set by each person’s condition and severity and monitored with blood tests including PTH and calcium. Doses are above standard supplement amounts but below high-dose protocols, based on methods of the Coimbra Protocol [19]; vitamin D has roles in immune function as well as bone health, according to the US National Institutes of Health [20], and we use it as an immune modulator, not only as a bone supplement. See our Coimbra Protocol page.

• The trials: vitamin D trials in IBS used fixed supplement doses, not the supervised doses described here; their results are mixed (see above) [6][8].
• Safety limit: the upper limit for adults is 4,000 IU a day, and too much vitamin D can raise blood calcium, according to the US National Institutes of Health [20]; doses above this are used only under medical supervision with regular blood tests.
• Safety data: in a 2022 study of 319 people with autoimmune diseases (not people with IBS) on supervised high-dose vitamin D, average calcium and kidney results stayed normal; it came from a single centre without a comparison group [19].
• The cautious view: a 2020 review in multiple sclerosis notes that the long-term safety of high-dose vitamin D is not well studied and requires physician supervision [21].
• Never on your own: please do not copy doses from the internet or from videos.

What is the best diet for IBS?

No single diet suits everyone with IBS: a 2025 network meta-analysis of 28 trials (2,338 patients) found that several diets helped, with a diet lower in starch and sugar ranked first (tested in only 2 trials) and the low FODMAP diet ranked fourth (tested in 24 trials) for overall symptoms [22]. NICE advises regular meals, taking time to eat, enough fluids, no more than 3 cups of tea or coffee a day, and less alcohol and fizzy drinks [13].

• Low FODMAP diet: a diet low in certain fermentable carbohydrates; a 2022 network meta-analysis of 13 trials ranked it first among the diets it compared, although most trials did not study how foods are reintroduced afterwards [23], while the larger 2025 analysis ranked it fourth [22]. The American College of Gastroenterology recommends a limited trial of it [3], and NICE advises that it be given only by a professional with dietary expertise [13].
• NHS tips: keep a food and symptom diary, eat no more than 3 portions of fresh fruit a day, avoid the sweetener sorbitol, and avoid hard-to-digest foods such as cabbage, broccoli, cauliflower, beans and onions to ease bloating [18].
• At Cure4Pain: as clinic practice, we remove the same foods as for gut dysbiosis (milk and most dairy, with home-set curd where it suits, wheat or gluten, sugar, processed foods, nightshades and raw foods), generally suggest limiting cruciferous (Brassica) vegetables such as cabbage and cauliflower as an observational practice, and tailor the rest of the diet to each person. Research has not tested this combination of exclusions in IBS, and we check nutrients during the diet because exclusion diets can lower vitamin and mineral intake [5].
• Before removing wheat: we test for coeliac disease first, because cutting out gluten before the test can make the result inaccurate [15].

Which magnesium is good for IBS with constipation?

Magnesium oxide is the form tested in constipation trials, while Cure4Pain uses magnesium citrate or bisglycinate as clinic practice. In a 2021 placebo-controlled trial in 90 adults with chronic constipation, magnesium oxide improved symptoms in 68.3% of people compared with 11.7% on placebo, similar to the laxative senna [24], and a smaller trial in 34 women found similar results [25]. The 2023 American constipation guideline gives magnesium oxide a conditional recommendation [26]. These trials were in chronic constipation, not IBS specifically.

• At Cure4Pain: we use magnesium citrate or magnesium bisglycinate rather than magnesium oxide as a laxative, set for each person to support gut movement. We found no trial of these forms in IBS; this is clinic practice, individual results vary, and further studies are needed.
• Absorption: forms that dissolve well, such as magnesium citrate, tend to be better absorbed than magnesium oxide, according to the US National Institutes of Health [27].
• Safety: the upper limit from supplements is 350 mg of elemental magnesium a day for adults, high doses can cause diarrhoea, nausea and stomach cramps, and magnesium interacts with some antibiotics, according to the US National Institutes of Health [27]. The kidneys control the body’s magnesium [27], so magnesium is not suitable for everyone, especially people with kidney disease, and we set it for each person. See our article on magnesium and autoimmune disease.

Do probiotics help IBS?

Some probiotics may help, but the evidence is weak: a 2023 meta-analysis of 82 trials (10,332 patients) found that some strains or combinations may improve IBS symptoms, with low to very low certainty, and no more side effects than placebo [28]. Guidelines differ: the British Society of Gastroenterology says probiotics may be tried for up to 12 weeks [17], while the American College of Gastroenterology suggests against them for overall IBS symptoms [3]. We use them as part of gut support, chosen for each person; this is clinic practice, individual results vary, and further studies are needed. See our Gut Dysbiosis & Gut Health page.

Do fibre (isabgol) and peppermint oil help IBS?

International guidelines recommend soluble fibre such as psyllium (isabgol) and suggest peppermint oil for IBS: the British Society of Gastroenterology calls soluble fibre an effective treatment and peppermint oil a possible one, with reflux as a common side effect [17], and the American College of Gastroenterology suggests both [3]. In a 2022 meta-analysis of 10 trials, peppermint oil improved overall IBS symptoms, but side effects were more common and the evidence was of very low quality [29].

• At Cure4Pain: we do not routinely use isabgol or peppermint oil; we tailor diet and gut support to each person. If isabgol or peppermint oil already helps you, please tell us before stopping it.

Can stress and anxiety cause IBS? The gut-brain link

Stress is not known to cause IBS on its own, but the NHS lists it among the things linked with IBS [9], and stress and IBS are closely linked: a 2019 meta-analysis of 73 studies found anxiety symptoms in 39% and depression symptoms in 29% of people with IBS, about 3 times more often than in people without IBS [12]. In research, IBS-specific cognitive behavioural therapy (CBT) and gut-directed hypnotherapy had the strongest evidence among behavioural therapies in a 2025 network meta-analysis [30], and NICE suggests psychological therapy if medicines have not helped after 12 months [13].

• At Cure4Pain: when stress, anxiety or low mood are part of the picture, we work on breathing, relaxation, sleep and counselling, and refer to the psychiatrist who works with our team when needed. This is clinic practice; individual results vary, and further studies are needed. See also our Insomnia & Sleep Problems page.

Does moxibustion or acupuncture help IBS?

The evidence is limited and of low quality: a 2022 meta-analysis of 11 trials (725 people) found that moxibustion (warming acupuncture points with a burning herb) helped diarrhoea-type IBS, but called the evidence preliminary [31], and a 2024 review of 15 systematic reviews rated the evidence for acupuncture and moxibustion in IBS as low or very low quality [32]. In a 2022 pilot trial in 90 people with diarrhoea-type IBS, real acupuncture was not clearly better than sham acupuncture [33], and NICE advises that acupuncture should not be encouraged for IBS [13].

• At Cure4Pain: we rarely use needling for IBS. At our Mumbai clinic we use moxibustion, including ginger moxibustion (warming points over a thin slice of ginger), and many patients report less bloating and pain. This is a clinic observation; individual results vary, and further studies are needed.
• Safety: moxibustion uses heat, so it is given only by trained staff at our clinic.

Which medicines are used for IBS?

NICE recommends antispasmodics, laxatives (but not lactulose) for constipation and loperamide as the first choice for diarrhoea, then low-dose tricyclic antidepressants such as amitriptyline as second-line treatment [13]. In the 2023 ATLANTIS trial of 463 adults in 55 UK general practices, low-dose amitriptyline improved IBS symptom scores more than placebo [34].

• Other options in guidelines: linaclotide for constipation-type IBS, SSRIs if a tricyclic does not help [13], and the antibiotic rifaximin for diarrhoea-type IBS [3].
• At Cure4Pain: Dr Krushal Pabari reviews antispasmodics, laxatives, loperamide, low-dose amitriptyline and acid-reducing medicines case by case, under clinical guidance from Team Cure4Pain. Never stop or change prescribed medicines on your own.

How long does IBS take to improve, and how is it followed up?

In our clinic, most people notice meaningful improvement within 12 to 18 weeks. This is a clinic observation; individual results vary, and further studies are needed. IBS is usually lifelong, but lifestyle changes and medicine can help, according to the NHS [1].

• Follow-up: after improvement, we advise ongoing maintenance with a full review, including blood tests, every 6 months.
• With an autoimmune condition: IBS is managed as part of your autoimmune care, with blood tests and a full review every 3 months.

When is stomach pain an emergency?

Call emergency services or go to an emergency department if stomach pain comes on very suddenly or is severe, according to the NHS [35]; Cure4Pain does not treat sudden or severe stomach pain. See a doctor urgently if you lose a lot of weight for no reason, bleed from your bottom or have bloody diarrhoea, find a hard lump in your stomach, or feel short of breath with palpitations and pale skin [2].

• Other warning signs: a lasting change in bowel habit, black or dark red stools, or tiredness that may be a sign of anaemia [36].
• Emergency numbers: 112 in India, 911 in the US, 999 in the UK.

Does Cure4Pain work with my doctor or gastroenterologist?

Yes. We work alongside your existing consulting physician or gastroenterologist, share our findings with them, and any change to medicines is made under clinical guidance from Team Cure4Pain, in coordination with them.

What happens at an IBS consultation?

After your tests, your first consultation (in Mumbai or online) covers your symptoms and IBS type, diet and meal timing, medicines, stress, sleep and any autoimmune condition. You then receive a written plan for diet and gut support, magnesium and vitamin D where they apply, stress and sleep care and medicine review. We see adults and young people aged 16 and over. Follow-up reviews are planned at regular intervals. Individual results vary.

Evidence: key studies

Who treats you

• Dr Krushal PabariMD, PGCP - Rheumatic & Musculoskeletal Diseases. Assistant Professor, Cooper Hospital; Guest Professor, CMP Homoeopathic Medical College.
• AT. Chintan Dalal, N.D.BNYS, R.AP. Functional nutrition and Coimbra Protocol practitioner.

Consultations look at the whole person: alongside the medical and nutritional plan, we bring a strong interest in behavioural science to counselling on stress, sleep and lasting lifestyle change.

How consultations work: Mumbai or online worldwide

Book through our patient portal. You can see us in person at our clinic in Malad West, Mumbai, or online from anywhere. Your first consultation reviews your history and tests; we then agree a plan together and set the monitoring schedule.

Related conditions and articles

• Gut Dysbiosis & Gut HealthImbalance of gut bacteria: bloating, bowel changes, SIBO and the gut and immune link.
• FibromyalgiaWidespread pain and fatigue; nutrients, sleep and pain care.
• Insomnia & Sleep ProblemsTrouble falling or staying asleep; vitamin D, nutrition, breathing and sleep habits.
• Hashimoto's ThyroiditisAutoimmune thyroid; antibodies, vitamin D, selenium and thyroid care.

• Autoimmune and inflammatory conditions
• Gut dysbiosis and gut health

This page is for education and does not replace medical advice. Do not start, stop or change any medicine or supplement without medical guidance.

References

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