Your baby's diet and special requirements

Intolerances, allergies and restricted diets may affect how you feed your baby. Find out why and some of the options that can help.


If you are vegetarian

Conventional infant formula is made from cows' milk and some contain essential fatty acids derived from fish. The manufacturing process for some ingredients may use rennin, an enzyme of animal origin.

If you are vegetarian and breast feeding, your baby will still get all the nutrients they need from your milk.

While you are breast feeding you should take a supplement containing 10 micrograms of vitamin D each day, but you should be able to get all the other vitamins and minerals you need by eating a varied and balanced diet. If your diet contains no animal protein though you may require vitamin B12 supplementation. Speak to your GP or healthcare professional who can advise you.

If you are bottle feeding and don't feel comfortable giving your baby animal products, soya formulas are available as an alternative to cows' milk formula, but always consult your healthcare professional for advice on choosing a suitable milk.


If you are vegan

Vegan diets are not recommended for young babies and children, as it is difficult to provide all their essential nutrients. If you do want to bring your baby up as a vegan, consult a registered dietitian or healthcare professional. Some soya formulas are suitable for a vegan diet.


If your baby has a cows' milk allergy

Cows' milk is the most common childhood allergy, affecting seven per cent of children under two. It is caused by a reaction to one or both of the proteins in milk (casein and whey). Symptoms include rashes, hives, diarrhoea, vomiting, stomach cramps, colic, breathing difficulties and, in rare cases, anaphylactic shock which is an extreme and severe allergic reaction that can cause swelling of the throat and mouth and can be life threatening.

If your baby has a cows' milk allergy, they might react to formula milk, and also to traces of dairy produce that pass from the foods you eat into your breast milk. You may need to cut dairy from your diet if you're breast feeding, or give your baby a special hypoallergenic formula. Infant formulas made from soya are free from cows' milk protein and may also be suitable. Ask your healthcare professional for advice before changing your own diet or your baby's formula.


If your baby is lactose intolerant

Lactose is a sugar found in milk. It is broken down by lactase, an enzyme in the gut. Some babies are born with a shortage of lactase, meaning they cannot process lactose properly. This causes symptoms including stomach cramps, colic, bloating and diarrhoea, which can be distressing for you and your baby.

Both breast milk and formula contain lactose, so if your baby is lactose-intolerant, you may need to switch to a soya-based or lactose-free formula. Speak to your GP or healthcare professional for advice.


If you follow a Halal diet

Halal refers to foods that are allowed under Islamic law. For a formula milk to be Halal, the enzymes used in the production of some of the ingredients must come from a Halal source. Some infant formulas have been approved by the Institute of Islamic Jurisprudence, the body that grants Halal status, as suitable for a Halal diet.