Feeding a vegetarian child: closing the B12, iron & omega-3 gap

Carrington & Finch

Vegetarian nutrition

Feeding a vegetarian child, well

A vegetarian diet can absolutely raise a healthy child. Three nutrients just need a little more attention: B12, iron and omega-3.

For parents of children aged 6+ · Educational, not medical advice

A well-planned vegetarian diet is entirely capable of meeting a growing child's needs — and much of India has done exactly that for generations. The honest caveat is that a few nutrients are harder to get without animal foods, so a vegetarian child's diet rewards a little more deliberate thought in three specific places.

The goal here is not worry. It is simply knowing where the gaps tend to be so you can build the everyday diet to close them — and know which ones are worth a conversation with your doctor.

B12

The one that needs the most attention

Vitamin B12 occurs naturally almost only in animal foods, which makes it the nutrient most likely to be short in a vegetarian — and especially a vegan — child. Lacto-vegetarian children get some from dairy (milk, curd, paneer), but intake is often still low, and fully plant-based diets provide essentially none.

How to close it

Include dairy daily if your family takes it; use B12-fortified foods where available; and if your child is fully plant-based, talk to your doctor about a supplement — this is the one nutrient where vegetarians most often genuinely need one.

Iron

Present in plants, just harder to absorb

Vegetarian diets are not necessarily low in iron — dals, beans, and dark greens all contain it — but plant (non-haem) iron is absorbed less efficiently than the iron in meat. The practical fix is well established: pair iron-rich foods with vitamin C.

A squeeze of lemon over dal, tomato in a chana dish, or fruit alongside a meal meaningfully improves how much iron the body takes up. Conversely, strong tea with meals reduces absorption — worth keeping tea away from mealtimes for children.

Omega-3 (DHA)

Where “from fish” becomes a problem

The most useful omega-3 for the body, DHA, is found mainly in oily fish. Plant sources such as flaxseed and walnuts provide a different omega-3 (ALA) that the body converts to DHA only inefficiently. For a vegetarian child, this makes DHA one of the quieter gaps.

How to close it

Include ALA sources (ground flaxseed, walnuts, chia) regularly — and know that algal DHA exists: omega-3 grown from algae rather than extracted from fish, giving a direct, vegetarian source of the same DHA fish provide. It is why, when we add omega-3, we use algal DHA — so a vegetarian family never has to make an exception.

A vegetarian diet doesn't need fixing.
It needs building, with three nutrients in mind.

The everyday version of all this

Dairy daily for B12 and calcium. Dals and greens with a little vitamin C for iron. Flaxseed, walnuts, or an algal source for omega-3. Iodised salt. And a doctor's check if you are unsure, particularly on B12 and iron, which can both be measured directly. None of this needs to be perfect on any given day — it needs to be roughly right across the week.

Sources Comprehensive National Nutrition Survey (CNNS), Government of India, 2016–18 · ICMR-NIN Recommended Dietary Allowances for Indians, 2020. Educational only; individual needs vary and should be confirmed with a doctor.
Read nextThe four nutrients Indian children most commonly miss → The full guideIs my child getting enough? An honest guide to children's nutrition →

Vegetarian by design — algal omega-3, no fish, no exception.

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This article is general educational information, not medical advice. Consult your paediatrician before starting any supplement, especially B12 or iron.
For children aged 6 years and above. Made in Australia. Made with certified-organic Australian A2 milk. Lacto-vegetarian.