It is generally considered safe for pregnancy to reach at least 37 weeks for delivery. Pregnancies lasting between 37 and 42 weeks are considered term, but the safest period to give birth is between 39 and 41 weeks, when the baby’s development, especially lung maturity, is optimal. Delivering before 37 weeks is considered preterm and carries increased risks for the baby. Beyond 42 weeks is considered post-term and carries some risks to both mother and baby.
Pregnancy Term Definitions
- Early term: 37 weeks to 38 weeks and 6 days
- Full term (safest window): 39 weeks to 40 weeks and 6 days
- Late term: 41 weeks to 41 weeks and 6 days
- Post-term: 42 weeks and beyond
Safety of Delivery
- Babies born before 37 weeks are preterm and may face risks including breathing problems, feeding difficulties, temperature regulation issues, and higher NICU admission rates.
- Waiting until at least 39 weeks reduces risks, allowing vital organs like lungs and brain to fully mature.
- After 42 weeks, risks increase due to possible placental aging and less oxygen and nutrients reaching the baby.
Special Considerations
- Some high-risk pregnancies may require earlier delivery for the health of mother or baby.
- Babies born as early as 24 weeks may survive with intensive medical support but face significant risks and potential long-term complications.
In essence, the safest and recommended time to deliver is between 39 and 41 weeks of pregnancy for the best outcomes for both mother and baby.
