In many cases when a baby is stillborn no cause can be found. The death of these babies deaths remain ‘unexplained’, which can be particularly hard for grieving parents who want to understand what happened to their baby. However, whilst many stillbirths remain unexplained, there are a number of possible causes.
Failure of the placenta is the most common known reason for a baby to be stillborn. About half of all stillbirths are linked to complications with the placenta.
The placenta provides nutrients (food) and oxygen for the baby when he or she is growing in the womb, connecting the baby to its mother’s blood supply. It’s essentially the baby’s lifeline, crucial to growth and development.
If the placenta doesn't work properly, the baby won’t receive enough nutrients or oxygen and fails to grow or develop. This is called intrauterine growth restriction (IUGR) or fetal growth restriction (FGR).
Many stillborn babies affected by failure of the placenta seem otherwise healthy but are born smaller than expected.
Reduced fetal movements
Reduced fetal movements is not a cause of stillbirth but it is one if the signs that a baby may not be getting enough food or oxygen. Reduced fetal movement is noticed by the mother in around half of stillbirths.
This is why health professionals ask pregnant women to monitor the pattern of their baby's movements from 16-22 weeks onwards.
If you notice a change in your baby’s pattern of movements get in touch with the hospital immediately. Never go to bed at night worried about your babies’ movements.
It is possible for the placenta to separate from the womb before the baby is born, this is called placental abruption and can lead to stillbirth as it means the placenta is not working as it should.
Placental abruption can be caused by a blow or impact to the stomach, or it could be linked to a condition such as pre-eclampsia or intrauterine growth restriction or IUGR. Sometimes placental abruption occurs without any clear reason why this has happened.
The symptoms of placental abruption are:
- pain in the back and abdomen
- tender womb
- vaginal bleeding.
If you are suffering from any of the symptoms above get medical help immediately.
One in 10 stillbirths happen because the mother contracts an infection.
Bacterial infections can move from the vagina into the womb, for example, group B streptococcus chlamydia, klebsiella, enterococcus, haemophilus influenza, mycoplasma or ureaplasma and escherichia coli (E.coli).
Other infections can harm a baby, including:
- Rubella (German measles)
- Lyme disease
- Coxsackie virus
- Herpes simplex
- Q fever
Other conditions that are linked to stillbirth are
- pre-eclampsia, a condition that occurs typically after 20 weeks - and causes high blood pressure in pregnancy
- intrahepatic cholestasis of pregnancy (ICP), or obstetric cholestasis, a liver disorder affecting pregnancy
- pre-existing diabetes
- gestational diabetes
- genetic defect in the baby (reason for around 10% of stillbirths)
- excessive blood loss (haemorrhage) before or during labour
- issues with the umbilical cord - a cord prolapse is when the umbilical cord slips through the entrance of the womb before the baby is born. This can stop the baby getting enough oxygen. The umbilical cord can also wrap itself around the baby’s neck
- premature birth – when a baby is born before 37 weeks of pregnancy
Many parents desperately want to know what happened to their baby. A post-mortem can sometimes offer answers, or at least rule out reasons for, the stillbirth.
How Tommy's is helping
Without more research we will never know why so many babies die before birth.
The Tommy’s stillbirth research centre in Manchester is focusing on the main causes of stillbirth and how stillbirth can be prevented.
The Manchester placenta clinic is a specialist service for pregnant women at risk of placental problems that potentially lead to fetal growth restriction We believe the majority of stillbirths could be prevented and we want to find out how.
Our research depends on fundraising and donations from those who care. To support our research click here.
A list of the best supportive blogs, instagram and Facebook accounts from parents who have gone through miscarriage, stillbirth, premature birth, neonatal death and termination for medical reasons
Ways to help, support and understand your partner after a stillbirth
Information and advice on supporting children when their sibling has been stillborn
Seeing your son or daughter coping with their baby’s death is very difficult and painful. This page is support for grandparents coping after with the stillbirth of their grandchild.
Find out the maternity rights and benefits that you’re entitled to if your baby is stillborn.
Going back to work after losing a baby can be a welcome return to routine for some, and a terrifying prospect for others. Take time to work out what’s best for you.
Pregnancy after a loss often brings mixed emotions and can be a very anxious time.
Spending time now with your stillborn baby could help you cope with the grief later.
1. NHS Choices [accessed 10/01/2018] Stillbirth causes, https://www.nhs.uk/conditions/stillbirth/causes/
2. NHS Choices [accessed 10/01/2018] Stillbirth overview https://www.nhs.uk/conditions/stillbirth/
3. RCOG (2011) Reduced fetal movements guideline 2011, green-top guideline no. 57, Royal College of Obstetricians and Gynaecologists, London, England, https://www.rcog.org.uk/globalassets/documents/guidelines/gtg_57.pdf
4. NHS Choices [accessed 10/01/2018] Stillbirth causes, https://www.nhs.uk/conditions/stillbirth/causes/Hide details
ℹLast reviewed on August 31st, 2017. Next review date August 31st, 2020.
By Gabriel barwa (not verified) on 5 Nov 2019 - 23:05
Why happened is in still birth
By Midwife @Tommys on 6 Mar 2017 - 09:22
Hi there. I am so sorry to hear about your son. Your love and emotions for him will have never changed in those 40yrs and that is natural, maternal love. I do wish you well and hope that you have good support. If you have not been offered counselling via your GP, as this is still really affecting you, i would suggest that this might be worthwhile for you. Please take care.
By Christine Thorp... (not verified) on 4 Mar 2017 - 10:38
As my son was stillborn over 40 years ago, it still hurts immensely as he was taken away from me straight away and I was never told what happened to him. Please if yes can help me I would be so very grateful.