Feeding your baby and gestational diabetes
After your baby is born, you should start feeding them as soon as you can (within half an hour). You should then feed them at least every 2–3 hours after that. This will help your baby’s blood sugar (glucose) stay at a safe level.
There is no reason why you can’t breastfeed your baby if you have gestational diabetes. It is safe and can help protect their future health.
If you’ve had gestational diabetes, your baby may be at greater risk of obesity and diabetes in later life. But breastfeeding can reduce these risks, as well as lowering their risk of some infections, asthma and heart disease.
Breastfeeding comes easily to some, but not to others. The hospital staff, midwife or health visitor can support you if it’s what you choose to do.
Colostrum harvesting and gestational diabetes
Colostrum is the first breast milk that your body makes. It is very thick and yellow, and contains all that your baby needs in the first few days after birth.
Because their stomach is so small, your baby will only need a small amount at a time. But they may want to feed quite often (maybe every hour).
You can collect and freeze this milk during the last few weeks of your pregnancy. This is known as ‘colostrum harvesting’.
Colostrum may be helpful for Diabetes. Some people can have trouble breastfeeding, which can make it hard to keep their baby’s blood sugar at a safe level. If your baby needs extra feeds, you can use any colostrum you have stored instead of (or as well as) formula milk.
If you want to harvest your colostrum, you can start hand expressing for a few minutes once a day from 36 weeks. Do not use a breast pump until after you have given birth.
You can ask your healthcare team for more information about this.
When your milk comes in
Your milk ‘comes in’ about 3 days after birth and you can then express by hand or use a breast pump. Some people find this hard, but your midwife or health visitor can support you with this.
If your baby needs extra care, the equipment might make it harder to breastfeed. Different healthcare professionals have different approaches, but you should be given support with breastfeeding. Talk to the midwives if you feel you need more support than you’re getting.
If your baby is too small or sick to breastfeed, you may need to start expressing so you can get your milk supply going. This will help you to start breastfeeding when you and your baby are ready.
There is equipment that can help you, and some hospitals have staff that can provide one-to-one support.
Formula feeding
Some people have trouble breastfeeding, are unable to, or choose not to. No matter your reasons, you shouldn’t feel – or be made to feel – guilty or pressured if you decide to use formula. Your baby needs you to stay healthy and happy, not stressed or worried.
Read more about formula feeding.
Whichever method of feeding you choose, the midwives are there to support you and your baby. They will want to make sure you have the information and support you need to make an informed choice.
See all our information on feeding your baby.
Royal College of Obstetricians & Gynaecologists, Diabetes UK (2021). Gestational diabetes - Information for you. Available at: https://www.rcog.org.uk/media/b10mqyfw/pi-gestational-diabetes.pdf (Accessed January 2024) (Page last reviewed 09/2021)
National Institute for Health and Care Excellence (2020). Diabetes in pregnancy: management from preconception to the postnatal period. NICE guideline 3. Available at: https://www.nice.org.uk/guidance/ng3 (Accessed January 2024) (Page last reviewed 16/12/2020)
Horta BL, Loret de Mola C, et al. (2015). 'Long-term consequences of breastfeeding on cholesterol, obesity, systolic blood pressure and type 2 diabetes: a systematic review and meta-analysis’. Acta Paediatrica. 104(S467):30–7. https://doi.org/10.1111/apa.13133
National Institute for Health and Care Excellence (2014). Maternal and child nutrition. NICE Public Health Guideline 11. Available at: https://www.nice.org.uk/guidance/ph11 (Accessed January 2024) (Page last reviewed 01/11/2014)
Zheng M, D’Souza NJ, et al. (2024). ‘Breastfeeding and the Longitudinal Changes of Body Mass Index in Childhood and Adulthood: A Systematic Review’. Advances in Nutrition. 15(1):100152. https://doi.org/10.1016/j.advnut.2023.100152
National Institute for Health and Care Excellence (2021). Postnatal care: Breastfeeding information and support. NICE Guideline 194 (Evidence review S). Available at: https://www.nice.org.uk/guidance/ng194/evidence/s-breastfeeding-information-and-support-pdf-326764486010 (Accessed January 2024) (Page last reviewed 04/2021)
Xue M, Dehaas E, et al. (2021). ‘Breastfeeding and risk of childhood asthma: a systematic review and meta-analysis’. ERJ Open Res. 7(4):00504–2021. https://doi.org/10.1183/23120541.00504-2021
Nakada S, Ho FK, et al. (2023). ‘Association between being breastfed and cardiovascular disease: a population cohort study of 320 249 participants’. Journal of Public Health. 45(3):569–76. https://doi.org/10.1093/pubmed/fdad016
Umer A, Hamilton C, et al. (2019). ‘Association Between Breastfeeding and Childhood Cardiovascular Disease Risk Factors’. Matern Child Health J. 23(2):228–39. https://doi.org/10.1007/s10995-018-2641-8
Foudil-Bey I, Murphy MSQ, et al. (2021). ‘Evaluating antenatal breastmilk expression outcomes: a scoping review’. Int Breastfeed J. 16:25. https://doi.org/10.1186/s13006-021-00371-7
University Hospital Southampton NHS Foundation Trust (2023). Collecting your colostrum while you are pregnant: patient information factsheet. https://www.cuh.nhs.uk/patient-information/antenatal-hand-expression-of-breast-milk-guidance/ (Accessed January 2024) (Page last reviewed 07/11/2023)
Read more about gestational diabetes
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Causes of gestational diabetes
We do not understand exactly why some women get gestational diabetes and others don't. But we do know that some factors increase the risk. -
Symptoms of gestational diabetes
Gestational diabetes does not usually cause any symptoms. Most women only find out that they have it when they are tested for the condition. -
Testing for gestational diabetes
Whether you are at risk of developing gestational diabetes or not, you’ll usually be offered an oral glucose tolerance test (OGTT). -
What are the risks of gestational diabetes?
Gestational diabetes can cause problems in pregnancy, but these risks can be reduced with careful management of diet, exercise, medicine & help from doctors. -
What is gestational diabetes?
Gestational diabetes is a type of diabetes that can develop during pregnancy. With management, most women will have healthy pregnancies and healthy babies. -
Gestational diabetes and your mental wellbeing
It’s natural to feel worried if you’ve been diagnosed with gestational diabetes. Here are some on how to ease any concerns. -
Gestational diabetes
Gestational diabetes is a specific type of diabetes that usually develops around the second or third trimester and normally goes away after you've given birth. -
Treatment for gestational diabetes
Gestational diabetes is treated by making changes to diet and exercise to manage glucose levels. If this doesn’t work, you may be given medication. -
Long term implications of gestational diabetes
If you have gestational diabetes, you can reduce your risk of future health issues by maintaining a healthy weight, exercising & eating a balanced diet. -
Gestational diabetes and giving birth
If you have gestational diabetes, your healthcare team should talk to you about your different options for giving birth. -
Understanding the glycaemic index
The glycaemic index is a measure of how quickly sugars are released into the bloodstream. Knowing what foods to avoid helps control gestational diabetes. -
Managing your weight with gestational diabetes
Women who are overweight are at higher risk of developing gestational diabetes, so it's important to know how to manage your weight and diet during pregnancy.