Who this is actually for
A distinction that matters, because the two groups need different levels of strictness.
Coeliac disease is an autoimmune condition in which gluten damages the small intestine. It requires strict, lifelong, complete gluten avoidance — including trace contamination from shared cooking surfaces and utensils. It is diagnosed by a doctor, through blood tests and usually an endoscopy, and the tests only work while you are still eating gluten. So if you suspect it, get tested before removing gluten, not after.
Non-coeliac gluten sensitivity describes people who feel better without gluten but do not have coeliac disease. It is real for many people and does not require the same absolute vigilance about traces.
Wheat allergy is different again and needs allergy assessment.
And a fourth group: people avoiding gluten because it seems healthier. There is no evidence that a gluten-free diet benefits people without one of the conditions above, and it usually makes the diet worse rather than better, because gluten-free processed food is generally more refined than what it replaces.
This page is education, not diagnosis. Persistent digestive symptoms, unexplained anaemia, unexplained weight loss or growth failure in a child are reasons to see a doctor rather than to start eliminating foods.
The good news, which is substantial
Most Indian food is already gluten-free, and this is genuinely one of the world's easier cuisines to adapt.
Naturally gluten-free and central to Indian eating: rice in every form; all the millets — ragi, bajra, jowar, foxtail, kodo, little millet; every pulse and dal; besan and other pulse flours; rajgira and kuttu, traditionally eaten during fasts; all vegetables and fruit; all dairy; all meat, fish and eggs; nuts, seeds and oils; and almost all Indian spices in their whole form.
Which means most of South Indian cuisine is already gluten-free — idli, dosa, uttapam, appam, pongal, sambar, rasam, most curries. So is a great deal of eastern and western Indian cooking. And Indian fasting food, developed precisely to avoid grains, is a ready-made gluten-free repertoire that most households already know how to cook.
What has to go
Wheat, in all its forms — atta, maida, suji and rava, dalia, and therefore chapati, roti, paratha, naan, puri, bhatura, samosa and pakora batter where wheat flour is used, bread, biscuits, cakes and most bakery items.
Barley — jau, and barley water.
Rye and most oats. Oats are naturally gluten-free but are almost always contaminated in processing, so use certified gluten-free oats if you use them at all.
The hidden sources
This is where people with coeliac disease get caught, and the Indian list is specific.
Asafoetida. Commercial hing is very commonly bulked with wheat flour. It is in almost every Indian kitchen and in a great many dishes, and it is the single most missed source in Indian gluten-free diets. Buy compounded hing that states it is gluten-free, or pure resin.
Ready-made masala mixes, which frequently use wheat flour as a filler or anti-caking agent.
Soy sauce, which is conventionally brewed with wheat. Indo-Chinese food is therefore a common problem.
Packaged snacks and namkeen, many of which contain wheat flour even when the base is besan.
Papad and some pickles, depending on the preparation.
Commercial rava idli and instant mixes, which are semolina-based.
Bought sweets, many of which use maida.
Shared frying oil, which is a genuine contamination route for coeliac disease when puris and pakoras have been fried in it.
For coeliac disease specifically, cross-contamination in a shared Indian kitchen is a real issue: a shared atta container, a shared rolling board, a shared tawa. Separate the atta storage and the roti-making surface at minimum.
Replacing the chapati
This is the practical problem, since a north Indian household eats roti twice a day.
Jowar roti is the closest in behaviour and the easiest starting point. Bajra roti works well in winter. Ragi roti carries a real calcium advantage — see calcium-rich Indian foods. Rajgira and kuttu rotis are already familiar from fasting cooking. Besan chilla replaces the meal rather than the bread and is higher in protein than any of them.
Expect the first attempts to fail. Gluten is what makes wheat dough hold together, so millet doughs crack and tear. They need hot water, patient kneading and a gentler hand, and it is a learnable skill rather than an impossible one.
The wider millet picture is in millets in the Indian diet.
The nutrition trap
One warning, because this is where gluten-free diets commonly go wrong.
Commercial gluten-free products — breads, biscuits, pasta, flour blends — are usually made from refined starches, are lower in fibre and micronutrients than what they replace, and cost considerably more. A diet built on them is worse than the wheat-based one it replaced.
The better approach in India is to lean on the food that is already naturally gluten-free rather than to buy substitutes: millets, rice, pulses, besan, vegetables and dairy. That is cheaper, more nutritious and more familiar to the household cooking it.
For newly diagnosed coeliac disease, also ask your doctor about iron, B12, folate, vitamin D and calcium — absorption is frequently impaired at diagnosis and deficiencies are common. Relevant background in iron-rich Indian foods and the guide to eating for health conditions in India.
Eating out
South Indian restaurants are the safest option by a distance, with the caveat about asafoetida and shared frying oil. Ask specifically about hing, soy sauce and whether the fryer is shared.
Avoid Indo-Chinese, most street food, and anything battered.
A week that works
To show how little actually changes, here is an ordinary Indian week with wheat removed and nothing exotic added.
Breakfasts: idli with sambar; dosa with chutney; besan chilla with curd; poha with sprouts and peanuts; ragi porridge; upma made with rice rava rather than semolina.
Lunches and dinners: rice with dal, sabzi and curd; jowar or bajra roti with any curry; khichdi; rajma or chole with rice; curd rice; any South Indian meal.
Snacks: roasted chana; sprouts chaat; fruit; nuts; boiled corn; chana chaat; homemade besan snacks.
Nothing on that list is a substitute product, nothing is expensive, and most Indian households already cook all of it. That is the practical argument for building a gluten-free Indian diet out of what the cuisine already contains rather than out of the gluten-free aisle.
The mistake to avoid at diagnosis
The commonest error after a coeliac diagnosis is to rebuild the old diet with substitutes — gluten-free bread instead of bread, gluten-free pasta instead of pasta, gluten-free biscuits instead of biscuits.
It is expensive, the products are usually more refined than what they replace, and it produces a worse diet than simply eating the South Indian and millet-based food that was always available. Households that make this shift tend to eat better than they did before the diagnosis, which is an unexpected but common outcome.
Being direct when it matters
For coeliac disease, be direct rather than polite — "I have a medical condition and cannot have any wheat flour at all" gets a more accurate answer than "is this gluten-free".