How to Improve Gut Health: An Evidence-Ranked GuideHow to improve gut health: close the fibre gap, add curd or kanji, protect sleep, use antibiotics wisely and know when to see a doctor. Start today.

Start with these six habits

Gut health isn't one number you can fix overnight. It's the result of what you eat, how you sleep and which medicines you take, repeated daily. Start here:

1. Add one fibre-rich food to every meal: a katori of dal, a millet roti, a fruit eaten whole (ICMR-NIN, 2011).
2. Raise fibre gradually and drink more water as you do (NHS, Constipation).
3. Have a fermented food most days: curd, chaas or kanji (Wastyk et al., 2021).
4. Vary your plants: different vegetables, fruits, pulses and grains through the week.
5. Protect your sleep and move daily: a daily walk helps keep you regular (NHS, Constipation).
6. Take antibiotics only when prescribed, exactly as prescribed, and ask your doctor about a probiotic if you're prone to antibiotic diarrhoea (Esmaeilinezhad et al., 2025).

If you have blood in your poo, unexplained weight loss or a change in bowel habit that isn't usual for you, skip the diet tips and see a doctor (NHS, Bowel cancer symptoms).

Gut health habits ranked by evidence

Most gut health advice online is presented as equally proven. It isn't. "Strength" below is our editorial read of the sources linked on this page, not a clinical grade.

Close the fibre gap, slowly

Fibre is the clearest place to start, and most Indian adults are well short. Fibre is also what your gut bacteria eat: in the Stanford diet study below, a high-fibre diet raised the bacterial enzymes that break down carbohydrates (Wastyk et al., 2021).

How short are we? In a 2026 study of 1,104 adults recruited at 29 diabetes-focused centres in 14 Indian states (690 of them with type 2 diabetes), fibre intake averaged 15.4 g a day, and carbohydrates supplied 62% of energy (Kapoor et al., 2026). The authors note these were adults seeking healthcare, not a sample of the general population, though fibre intake was similar with and without diabetes. A separate 2026 Indian paper, summarising earlier research, puts typical intake at about 15-20 g a day, below a recommended 25-30 g (Hebbar et al., 2026). The NHS target for adults is 30 g a day (NHS, Fibre).

Where to find it. ICMR-NIN's dietary guidelines list wheat, jowar, bajra, ragi, maize, pulses, dals and fenugreek seeds as having more than 10 g of fibre per 100 g, and rate fresh fruit above fruit juice (ICMR-NIN, 2011). So the Indian kitchen already has the answer; the problem is polished rice, maida and too little dal on the plate.

Go slowly. The NHS advises increasing fibre gradually and drinking plenty of water and other fluids (NHS, Constipation). A jump from 15 g to 30 g overnight is a common route to gas and bloating; add one swap a week. If bloating is already your problem, our guide on how to reduce bloating covers which fibres are gentler.

Add a fermented food most days

Fermented foods have direct trial evidence for gut bacteria, though it comes from one small but well-run study. An expert panel convened by the International Scientific Association for Probiotics and Prebiotics (ISAPP) defines fermented foods as foods made through desired microbial growth and enzymatic conversions of food components (Marco et al., 2021).

In a 17-week randomised study at Stanford, 36 healthy adults were assigned to a high-fermented-food diet or a high-fibre diet. The fermented-food group's gut microbial diversity rose steadily and their inflammatory markers fell (Wastyk et al., 2021). It's one small US study, so read it as a promising lead rather than settled science.

Curd before capsules.

Indian kitchens are full of fermented foods:

• Curd (dahi) and chaas: eaten uncooked, the easiest daily habit.
• Kanji: the fermented black-carrot drink of North Indian winters.
• Idli, dosa and dhokla batters: fermented, then steamed or cooked. Cooking is heat, so these may carry far fewer live microbes than curd; they still count as fermented foods under the ISAPP definition.
• Homemade pickles fermented in brine (not the oil-and-vinegar kind).

For more on the bacteria themselves, read how your gut microbiome works.

Variety over superfoods

There is no single gut superfood. ICMR-NIN's guidelines make the point for nutrients: no single fruit or vegetable provides everything, so eat a variety of different colours (ICMR-NIN, 2011). The same logic suits your gut bacteria, which feed on different fibres.

You'll see a "30 plants a week" target online. We couldn't verify a trial that tested a set number, so we don't give one. A practical version: rotate your dals (moong, masoor, rajma, chana), your grains (rice, wheat, millets, oats) and your sabzi through the week, rather than eating the same three things every day.

Sleep, stress and movement

Food is the main lever, but not the only one. The evidence here is thinner, and we'll say so.

Sleep. In a lab crossover study, 9 normal-weight men slept about 4 hours a night for two nights. Their gut bacteria shifted (a higher Firmicutes-to-Bacteroidetes ratio), but the overall make-up of their gut community (beta diversity) didn't differ from after normal sleep (Benedict et al., 2016). That's a tiny, short study. Sleep matters for plenty of other reasons; just don't expect a gut transformation from one good night.

Stress. For people with irritable bowel syndrome (IBS), the NHS advice includes finding ways to relax and getting plenty of exercise (NHS, IBS diet and lifestyle). If stress reliably upsets your stomach, that's a reason to see a doctor about IBS, not to buy a supplement.

Movement. The NHS notes that a daily walk or run can help you poo more regularly (NHS, Constipation). A 15-minute walk after lunch is an easy start.

Antibiotics: use them well

Antibiotics are sometimes essential; the aim is to use them only when needed, not to avoid them. Diarrhoea is one of their common side effects, usually mild and gone once the course ends (NHS, Antibiotic side effects).

What they do to gut bacteria. In a study that sampled three adults over 10 months spanning two courses of ciprofloxacin, each course changed their gut bacteria within 3-4 days. Recovery began about a week after each course ended but was often incomplete (Dethlefsen & Relman, 2011). So: no leftover strips, no antibiotics for a viral cold, and only on a doctor's prescription.

Should you take a probiotic with them? The evidence cuts both ways. A 2025 Cochrane review of 38 trials (13,179 people) found C. difficile diarrhoea in 1.6% of those given probiotics alongside antibiotics, against 3.2% of controls (low-certainty evidence), and its authors call for large trials in people at low baseline risk (Esmaeilinezhad et al., 2025). But in a study in mice and people, probiotics taken after antibiotics delayed the gut microbiome's return to its usual state compared with no probiotic (Suez et al., 2018). Ask the doctor who prescribed the antibiotic.

Do gut supplements help?

Sometimes, modestly, and never instead of food. The NHS says there's some evidence probiotics may ease some IBS symptoms, but little evidence for many of the health claims made for them; people with a weakened immune system or an existing health condition should talk to a doctor first (NHS, Probiotics).

If you can't get enough fibre from food, a fibre supplement can help close the gap. Compare the options in our best fibre supplement in India guide, or see how PHGG compares with isabgol. For the difference between the two kinds of gut supplement, read probiotics vs prebiotics, and for spore-forming strains, our guide to Bacillus probiotics.

A gut-friendly start, not a shortcut

SILT Mornings is a drink for the fibre-and-probiotic part of the routine, not a replacement for dal, curd and vegetables. Stir one stick into 200-250 ml of room-temperature or cold water (not boiling: the pack says heat degrades sensitive actives), any time in the morning. The pack says 1 stick per day, and "use consistently for at least 3 months".

Each stick has 5 g Sunfiber® PHGG (partially hydrolysed guar gum, a soluble prebiotic fibre), 6 billion CFU of three spore-forming probiotics (Bacillus subtilis, B. coagulans and B. clausii, 2 billion CFU each) and 550 mg of digestive herb extracts (saunf, jeera, ajwain, amla). The pack names the three probiotic species but not their strain codes, so strain-specific probiotic trial results can't be assumed to apply to it. It also has 80 mg caffeine, 200 mg L-theanine and vitamins D3, K2 (menaquinone), C and B12 at 100% RDA. The pack lists it as no added sugar, no maltodextrin and no gluten, and says it contains a natural sweetener (stevia) and natural colour. The flavour is Lemon Orange. The nutrition panel on the pack shows 4.95 g dietary fibre per stick, 16.5% of the ICMR 2020 adequate intake for men, with 1.13 g total sugars and 0 g added sugars (SILT pack). The PHGG supplier certificate reads 91.2% dietary fibre (supplier certificate). Supplier certificates of analysis are on our science page; the vitamin blend certificate and a finished-product NABL lab report are pending, and we'll publish them when they're ready. If you take regular medicines, especially for thyroid, blood pressure, blood sugar or sleep, ask your doctor first, and the same goes if you have a liver or thyroid condition or are pregnant. The pack also says it contains caffeine, and if you are nursing or sensitive to caffeine, to check with your healthcare practitioner first. If you take a blood thinner such as warfarin, ask your doctor before using SILT Mornings, because it contains vitamin K2 (55 mcg). The evidence for PHGG at 5 g is on our fibre supplement page.

MRP ₹1,125 ₹900 · 15 sticks or ₹1,500 for 30 (MRP ₹2,250)

That's ₹60 a stick, or ₹50 in the 30-stick pack.

Gut health is a daily habit

Work your fibre up towards 30 g with dals, millets, whole grains and whole fruit; add curd, chaas or kanji most days; rotate your plants; walk daily; sleep properly; and keep antibiotics for when a doctor prescribes them. See a doctor for red-flag symptoms. If fibre from food falls short, our fibre supplement page explains where a fibre supplement fits. Evidence, not hype.