What are the Physical and Hormonal Factors Affecting Vaginal Birth?
What is Vaginal Birth?
Vaginal birth is the type of birth that occurs when the baby passes through the mother's birth canal. This birth method, which can offer many advantages in terms of mother and baby health, is considered a part of the natural birth process when appropriate conditions are provided.
When there is no serious problem affecting the health of the mother and the baby during pregnancy, the position of the baby, the placement of the placenta and the appropriate pelvic structure of the mother significantly increase the possibility of vaginal birth.
What are the factors affecting vaginal birth?
There are many physical and hormonal factors that affect vaginal birth. The main ones are:
- Position of the baby in the uterus
- Location of the placenta
- Pelvic structure of the expectant mother
- Regularity and strength of uterine contractions
- General health status of mother and baby
- Week of pregnancy
Vaginal birth can be performed successfully in pregnancies where these factors are suitable.
When Does Vaginal Birth Begin?
Vaginal birth usually takes place on average in the 40th week from the last menstrual date, which is the time of completion of pregnancy. However, the time of birth may vary from person to person and is usually seen between the 37th and 42nd weeks of pregnancy.
Among the symptoms that indicate the beginning of labor:
- Regular and increasing uterine contractions
- Contractions starting to occur every 5-10 minutes
- Water breaking
is located.
It is recommended to apply to the hospital when regular contractions begin. If water breaks before labor pains begin, a health care provider should be consulted without waiting for contractions.
How Does the Vaginal Birth Process Happen?
The birth process begins when uterine contractions become regular. Thanks to contractions, the cervix opens and the baby begins to move through the birth canal.
Vaginal birth occurs when the cervix is sufficiently dilated and the baby passes through the birth canal.
In some cases, a problem may develop in the mother or baby that prevents birth from continuing vaginally. In such cases, it may be necessary to proceed with a cesarean section for the safety of the mother and the baby.
Benefits of Vaginal Birth for the Mother
The mother's recovery process is usually faster after vaginal birth.
Some advantages of vaginal birth for the mother are:
- Lower risk of infection
- Less need for painkillers
- Faster recovery after birth
- Faster recovery of the uterus
- Less blood loss
- Being able to start breastfeeding earlier
These advantages can contribute to the mother's postpartum period being more comfortable.
Benefits of Vaginal Birth for the Baby
During vaginal birth, the baby's passage through the birth canal may provide some physiological advantages.
These advantages include:
- Easier removal of fluid from the lungs
- More efficient functioning of the respiratory system
- Contact with beneficial bacteria in the vaginal flora
- Contributing to the development of the immune system
is located.
It is also possible for the mother and the baby to establish contact earlier after birth and for breastfeeding to start earlier.
Every Birth Type is Personalized
When determining the method of birth, not only the general advantages and disadvantages but also the individual health status of the expectant mother and the baby should be evaluated.
While vaginal birth is a suitable option in some pregnancies, in some cases, cesarean birth may be safer for the health of the mother and baby.
Therefore, the birth plan must be created in line with the evaluations made by the gynecologist and obstetrician.
Is Vaginal Birth Possible After Caesarean Section?
Vaginal birth after cesarean section is possible for some women. However, this situation is not suitable for every expectant mother and may involve certain risks.
In the evaluation of vaginal birth after cesarean section:
- Type of uterine incision made before
- Reason for previous cesarean section
- Number of cesarean sections
- Current health status of mother and baby
are taken into account.
However, since the risk of serious complications such as uterine rupture cannot be fully predicted, the decision to have a vaginal birth after cesarean should be carefully evaluated.
What You Need to Know About Vaginal Birth
Vaginal birth is a natural birth method that can offer significant advantages for both mother and baby under appropriate conditions. However, every pregnancy is different and the method of birth should be planned individually.
It is of great importance for expectant mothers to have regular doctor's check-ups during pregnancy, to obtain accurate information about birth options and to make decisions in line with expert opinion for a healthy birth process.
Op. Dr. Esra Oben Tutar
Gynecology and Obstetrics Specialist
June 10, 2026
