10 benefits of rajgira (amaranth) and its side effects

1. Protein that beats true cereals

Rajgira carries 13.3 g of protein per 100 g (IFCT 2017), above whole wheat's 10.6 g, and a 2012 Journal of Food Science review (Caselato-Sousa and Amaya-Farfan) describes amaranth as a highly nutritional pseudocereal, its protein amount sitting above true cereals. A roti made from 30 g of rajgira flour brings about 4 g of that to the plate, and rajgira is level with quinoa on this nutrient, at 13.1 g.

2. Iron: what the haemoglobin studies found

Iron is 8 mg per 100 g, about twice whole wheat's 4 mg. A 2024 systematic review and meta-analysis in Public Health Reviews (Yilma and colleagues) pooled ten studies, 1,225 people in all, of amaranth-based food interventions; haemoglobin moved up a little on average, but the change missed statistical significance, and its authors ask for more work on iron bioavailability and the phytic iron ratio. To take up more of the plant iron rajgira does carry, ICMR-NIN's guidelines suggest putting vitamin C foods in the same meal — guava, pineapple or citrus fruit — or a green-chilli-and-coriander chutney on the side, and they want tea held back from the hour around meals, since tea ties up dietary iron and makes it unavailable.

3. Fibre: slower absorption, fullness and stool bulk

Total dietary fibre is 7.5 g per 100 g (IFCT 2017), and the ICMR-NIN guidelines explain what fibre does in the body: it slows the uptake of carbohydrates and fats and stretches the feeling of fullness a meal gives. The same guidelines note that dietary fibre increases stool bulk and supports regular bowel function. A rajgira roti puts 2.2 g of fibre on the plate, and a katori of cooked rajgira about 3 g, which is the everyday way this benefit arrives.

4. Calcium and magnesium: nerves, fluid balance and enzyme work

Rajgira supplies 162 mg of calcium and 270 mg of magnesium per 100 g (IFCT 2017). A roti's 30 g of rajgira flour carries about 49 mg of calcium, two rotis about 97 mg. Its 270 mg of magnesium is more than double what whole wheat or quinoa carries per 100 g, and the ICMR-NIN guidelines say minerals like these keep nerve cell transmission, the body's fluid balance and its enzyme and hormone activity in order, with sodium intake matched by enough potassium; rajgira's own potassium is 413 mg per 100 g.

5. Blood sugar: a blank GI, and an attributed effect

There is no tested glycemic index for plain amaranth grain, so this page makes no GI claim for rajgira; the one database entry, popped amaranth eaten with milk, mixes the grain with the milk's carbohydrate. In the studies a 2012 Journal of Food Science review gathered, amaranth is linked instead to lower blood glucose, among other effects. Those are attributed findings from that review, not measured values of this grain, so the practical advice stays at the plate: a counted portion, dal or curd beside it, and a word with your doctor or dietitian if you manage diabetes.

6. Low sodium: the salt comes from the cook, not the grain

Sodium in raw rajgira is 2.8 mg per 100 g, so the salt on a rajgira plate is nearly all the cook's own doing. That makes plain rajgira roti or unsalted cooked rajgira an easy base when a doctor has asked for less salt, with 413 mg of potassium riding along per 100 g.

7. Naturally gluten-free

Rajgira has no gluten. ICAR-IIMR's millets bulletin puts amaranth beside rice, corn, sorghum and millets among the grains that may help people who adhere to a gluten free diet (Thompson 2009), so rajgira atta fits gluten-free rotis, porridge and sweets for people who avoid wheat, barley and rye; the NHS page on coeliac disease lays out who must avoid gluten and why. Without gluten, rajgira dough is mixed with hot water and handled gently rather than pulled like wheat dough. In a strictly gluten-free kitchen, also check the may-contain warning on the pack.

8. The vrat-day grain of North Indian kitchens

Rajgira's busiest days are fast days. On vrat days many North Indian homes set aside wheat and rice, and rajgira atta takes their place in roti, puri and laddu; the practice is kitchen culture, not a nutrition statement, and the foods a fast allows are set by the fast itself. On the everyday table the same flour simply becomes a gluten-free roti.

9. A seed the guidelines say can be eaten three to four times a week

The guidelines put amaranth seeds on a list of foods with health promoting effects, beside fenugreek, flax, chia and basil seeds, which "can be consumed at least three to four times a week". That frequency is the only amount the guidelines give for amaranth grain; the section after the side effects turns it into rotis and katoris.

10. Cooks within the guidelines' healthy methods

When the ICMR-NIN guidelines list healthy cooking methods, they name grilling, baking, steaming and sauteing with minimal oil, instead of frying, and the stated reason is that this reduces the energy density of the meal. A rajgira roti on the tawa, a katori of boiled rajgira or a steamed rajgira dish sits on that list; a deep-fried rajgira puri does not. The same rules that apply to every grain apply here, and rajgira follows them without fuss.

We found no study naming a side effect specific to amaranth seed, so the caution list is about amount, preparation and context.

• Energy density. At 356 kcal per 100 g, a second helping of sheera or an extra puri adds up quickly; count rajgira as the cereal it replaces, not on top of it.
• Fibre step-up. Rajgira carries 7.5 g of fibre per 100 g, a jump for a plate used to little fibre; introduce it one dish at a time and see how the gut takes it.
• Plant iron. Amaranth's iron is plant iron, and the 2024 haemoglobin review asks for research on the phytic iron ratio; the practical pairings — vitamin C in the meal, tea an hour away — are in benefit 2 above.
• No GI figure. Anyone who plans meals around glycemic index has no amaranth number to work from, so a diabetes plan built on GI tables cannot slot rajgira in by that column; settle portions with your doctor or dietitian.
• Gluten cross-contact. The grain itself has no gluten; in a strictly gluten-free kitchen, check the label and ingredient list before using bought rajgira atta.

None of these is a reason to avoid rajgira; each is a reason to portion and prepare it sensibly. When meals follow a medical plan, ask your doctor or dietitian before rajgira turns into your main grain.

The ICMR-NIN guidelines give no daily gram allowance for amaranth grain; what they give is a frequency. Their list of health promoting seeds — fenugreek, flax, chia, basil and amaranth — carries the rhythm at least three to four times a week, so the practical daily question is not how many grams but which meal.

On this site's portions, one rajgira roti is made from 30 g of flour and one katori of cooked rajgira from 40 g of dry seed; a pair of rotis (60 g) makes a fuller plate. Let rajgira replace the wheat or rice it stands in for rather than join it, and rotate other grains through the week. The roti and katori arithmetic is on the rajgira nutrition per 100g page.

Rajgira atta is the form the farali kitchen uses, and it behaves unlike wheat because it has no gluten: the dough is held together by hot water, and the roti gets pressed flat and rolled with a light hand rather than pulled. The grain itself cooks like rice, or gets popped for chikki and other sweets.

• Rajgira roti: the farali flatbread, kneaded with just-boiled water; each roti, made from 30 g of flour, gives about 107 kcal before any ghee.
• Rajgira laddu: roasted atta, jaggery and ghee pressed into balls with no syrup stage; one laddu is about 118 kcal.
• Rajgira puri: the same hot-water dough rolled smaller and fried; it is a fast-day dish.
• Rajgira sheera: the flour roasted in ghee and cooked with milk and jaggery into a soft pudding.

If you are new to it, start with one rajgira roti beside dal and a sabzi, and move up once the stomach is used to the fibre. For the full set of dishes, see the amaranth recipes roundup; storage and buying notes are on the rajgira hub.

Does rajgira cause gas?

We found no study linking amaranth seed to gas. The fibre it carries, 7.5 g per 100 g, is the same fibre the guidelines describe in general terms. If bloating persists, ask your doctor or dietitian.

Why we eat rajgira in fast?

Rajgira is one of the flours that step in for wheat and rice on vrat days, when many North Indian homes set the two aside; rajgira roti, puri and laddu are all farali dishes made from it. The practice is kitchen and religious custom, not a nutrition rule — the foods a fast allows are set by the fast itself. The flour is also gluten-free, so it suits a fasting kitchen that must keep away from wheat, barley and rye.

Does amaranth have protein?

Yes: 13.3 g per 100 g (IFCT 2017), and it is the nutrient the grain is known for — a 2012 review describes amaranth as a highly nutritional pseudocereal, ahead of true cereals on protein amount. A roti from 30 g of rajgira flour carries about 4 g, and a katori cooked from 40 g of dry seed about 5.3 g.

Difference between rajgira and quinoa?

Rajgira is amaranth (Amaranthus cruentus); quinoa is a different plant, Chenopodium quinoa. Per 100 g, quinoa leads on fibre (14.7 g against 7.5 g), calcium (198 mg against 162 mg) and folate (173 mcg against 24.7 mcg); rajgira leads on energy (356 against 329 kcal), iron (8 mg against 7.5 mg) and magnesium (270 mg against 119 mg), and only quinoa has a database GI, 52 (mean of three plain boiled entries; 55 or less is low).

Can rajgira cause constipation?

We found no study linking rajgira to constipation. Its 7.5 g of fibre per 100 g works the way fibre anywhere does: per the ICMR-NIN guidelines, dietary fibre increases stool bulk and supports regular bowel function. Those are the guidelines' general fibre points, not tests of rajgira itself.

Is rajgira good for weight loss?

No single food brings weight loss. Rajgira is dense at 356 kcal per 100 g; a roti from 30 g of flour is 107 kcal, and ICMR-NIN says fibre adds to the feeling of fullness. It counts only as a swap for refined flour or rice, not an add-on, and the sweet end — laddu, sheera, chikki — adds energy fast. The evidence and portions are on the rajgira for weight loss page.