Signs and symptoms of lactose intolerance in babies
A sure sign
The difference between allergy and intolerance
While it’s relatively uncommon, babies can be lactose intolerant. Read on to find out more about the different types of lactose intolerance, how to spot the symptoms and what it means for your baby’s diet, as well as their future health and development.
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Comforting your baby
When it comes to comforting your baby, there is no ‘right’ way – it completely depends on what they respond to. Below are a few tried-and-tested methods that mums have found helpful1:
- Soothe them with gentle rocking motions
- Try holding your baby in different positions
- Calm them with white noise (e.g. the hairdryer, vacuum cleaner)
- Give them a warm bath and then wrap them in a warm blanket
- Take a walk around the block with them in the pram
- Take them for a drive in the car
- Give them a gentle stomach or back rub
- Ask your health visitor about baby massage techniques
If you suspect your baby may have colic, watch our short video for tips and advice to help manage their symptoms.
What is lactose intolerance?
Lactose is a sugar found naturally in milk and most other dairy products. An intolerance occurs when the body is unable to produce enough lactase, a digestive enzyme produced in the gut, to break down the lactose into a more easily digestible form1.
Lactose intolerance is relatively uncommon, with only 1 in 50 people of European descent having the condition. In the UK, it is more common in people of Asian or African-Caribbean origin1.
There are three main causes2:
Primary – when natural lactase production decreases in response to a decreased intake of dairy products in the diet. This doesn’t usually occur before adulthood and is usually associated with cultural groups where dairy products are not
Secondary – a temporary intolerance that is the result of gut damage – from a stomach bug or infection, undiagnosed coeliac disease or a long course of antibiotics, for example.
Congenital – an extremely rare, genetic form of the condition where babies are born without, or with very low amounts of, lactase.
Lactose intolerance may also occur in babies born prematurely because their small intestine is not developed enough at birth. It usually improves as babies get older.
Symptoms of lactose intolerance
The symptoms of lactose intolerance can be similar to those of other conditions, making it hard to identify. However, common symptoms include:
- Stomach pain
- Bloated stomach
- Excessive wind
These symptoms usually occur within 1–3 hours after the
How do you know if your baby is lactose intolerant?
If you think your baby is having digestive trouble, you should visit your GP, who can help with a diagnosis. They may refer you to a paediatric dietician for more expert care. If your baby is less than a year old, why not try our Baby Symptom Checker? It includes lots of useful tips and a symptom summary to show your GP.
When lactose intolerance is suspected, you may be advised to eliminate lactose from your baby’s diet. You should only do this under the guidance of a healthcare professional, who will provide advice about ensuring your baby still receives all the nutrients they need for healthy development. One nutrient that needs special attention is calcium, a mineral that is usually provided by foods contacting lactose and which can affect normal bone development3.
If you’re breastfeeding, your baby may need lactase drops to digest the lactose in your breast milk.
As long as the condition is managed and your baby is monitored, lactose intolerance will not affect their development. Identifying it early allows your baby to feel well again and get the nutrients they need for this stage and all future growth. And remember, in most cases, the intolerance may only last 4–6 weeks so it is important to discuss reintroducing lactose with your healthcare professional.
Foods containing lactose and their alternatives
The lactose levels of some common foods:
Glassof milk (200ml) 9g lactose
- Carton of
yogurt(125g) 5.9g lactose
- Fromage Frais (60g) 1.8g lactose
- Cheddar cheese (30g) 0g lactose
- Cottage cheese (40g) 1.2g lactose
- Milk chocolate bar (54g) 5.5g lactose
- Bowl of rice pudding (200g) 7.8g lactose4
|Food Type||Foods containing lactose||Low-lactose alternatives|
|Milk||Milk solids, Condensed milk, Modified milk, Evaporated milk, Skimmed milk powder, Buttermilk||
Lactose-reduced and lactose-free formulas such as Aptamil Lactose Free
(important note: only formula milk should be used for babies under one year)
|Fat||Margarine||Butter, clarified butter or ghee, Dairy-free spread, Soya spread, Vegetable oils|
Low lactose: Edam, Gouda, Roquefort, Brie, Cheddar, Blue cheese
Lactose-free: Soya cheese, rice cheese
(Important note: babies younger than 6 months shouldn't eat soft or unpasterised cheeses)
Low-lactose: Cows' milk yogurt
Lactose-free: Soya yogurt
|Cream||Cream, Artificial cream, Ice cream||Soya cream, Oat cream|
|Food ingredients||Lactose, Lactoglobulin, Curd, Whey powder|
The following foods may contain lactose. Check the ingredient list for any of the foods containing lactose listed above3.
- Processed meats and foods, e.g. ham
- Bread and bread products
- Breakfast cereals
Will my baby grow out of lactose intolerance
Depending on the cause, your baby may fully recover or be able to tolerate more lactose in the future. For some people, the condition lasts for life.
Your GP or paediatric dietician may recommend a lactose-reduced or lactose-free formula. They may then want to try to reintroduce lactose at some point to test your baby’s reaction and see if there has been any change so keep in touch with your health professional and let them know how you are getting on.
- If you suspect your baby has lactose intolerance, speak to your GP or health visitor. They will guide you in the next steps of identifying the issue and getting your baby back to full health.
- You can also enter your baby's symptoms into our Baby Symptom Checker, which will give you practical advice and a handy symptom summary to discuss with your GP.
1. NHS UK. Lactose intolerance [Online]. 2014. Available at: www.nhs.uk/conditions/Lactose-intolerance/Pages/Introduction.aspx [Accessed May 2014]
2. EFSA. Scientific opinion on lactose thresholds in lactose intolerance and galactosaemia [Online]. 2010. Available at: www.efsa.europa.eu/en/efsajournal/pub/1777 EFSA Journal 8(9):1777 [Accessed May 2014]
3. Dunne. T., Farrell. P. & Kelly. V. (2008). Feed Your Child Well. A & A Farmer
4. McCance. & Widdowson. (2002). The Composition of Foods. (6thed).
Last reviewed: 13th August 2016
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