As your due date approaches, you may have heard about collecting colostrum before birth to have an extra supply ready for your newborn. This practice can be especially beneficial for babies who may need extra nourishment after birth, such as those born to mothers with gestational diabetes or feeding difficulties. However, a common concern many expectant mothers have is whether collecting colostrum could trigger preterm labor.
Let’s explore the facts so you can make an informed decision.
What Is Colostrum and Why Do Some Mothers Collect It?
Colostrum is the first milk your body produces during pregnancy and in the early days after birth. It is packed with antibodies, nutrients, and immune-boosting properties that support your baby’s health. Some mothers choose to collect colostrum before delivery to:
- Have a backup supply in case their baby has difficulty latching right away.
- Provide colostrum for babies at risk of low blood sugar (common in babies of mothers with gestational diabetes).
- Reduce the likelihood of needing formula supplementation in the early days.
Colostrum is typically collected by hand expression, rather than using a breast pump, and stored in small sterile syringes or containers in the freezer until the baby is born.
Does Collecting Colostrum Cause Preterm Labor?
The concern arises because nipple stimulation releases oxytocin, the hormone responsible for both milk ejection and uterine contractions. Since oxytocin is also used medically to induce labor, some worry that hand-expressing colostrum could trigger contractions strong enough to cause early labor.
However, in healthy, full-term pregnancies, controlled and gentle hand expression does not typically lead to preterm labor. Many women experience nipple stimulation from everyday activities, such as intimacy or warm showers, without it bringing on labor. For most women, collecting colostrum is safe as long as it is done carefully and in moderation.
That being said, some women should proceed with caution or avoid collecting colostrum altogether if they are at risk for early labor.
Who Should Be Cautious About Collecting Colostrum?
Colostrum collection may not be advisable if you have:
- A history of preterm labor or have been told you are at risk for early delivery.
- Cervical insufficiency or have had a cervical cerclage (a stitch placed in the cervix to prevent early dilation).
- Placenta previa or other placental abnormalities.
- Multiple pregnancies, such as twins or triplets.
- Unexplained vaginal bleeding or contractions during pregnancy.
If you have any of these conditions, always check with your healthcare provider before attempting to express colostrum. They can provide personalized guidance on whether it is safe for you.
How to Collect Colostrum Safely
If your provider approves, here are some safe ways to collect colostrum while minimizing any risks:
✔️ Start around 36 to 37 weeks to reduce the chance of early contractions.
✔️ Use gentle hand expression instead of a breast pump to limit nipple stimulation.
✔️ Limit sessions to 5–10 minutes per breast, once or twice a day.
✔️ Monitor your body’s response—if you experience cramping or contractions, stop and take a break.
✔️ Store colostrum in sterile containers or syringes, label with the date, and freeze for later use.
The key is to collect small amounts without overstimulating your breasts.
The Bottom Line
For most expectant mothers, collecting colostrum before birth is safe and beneficial, helping to ensure their baby has access to this nutrient-rich first milk if needed. It is unlikely to cause preterm labor unless there are existing risk factors.
However, every pregnancy is unique, so it’s best to check with your healthcare provider before starting. With the right precautions, colostrum collection can be a helpful tool in preparing for your baby’s arrival.
