The development of a baby’s head shape is a topic that parents are highly concerned about. In fact, a baby’s sleep position is closely related to the formation of their head shape. Prolonged improper sleep positions can lead to a flat or asymmetrical head, affecting the symmetry of the head. To support healthy development, parents need to understand proper sleep positions and some simple techniques to ensure that the baby’s head develops naturally and evenly. In this article, we’ll explore how the right sleep posture can help babies achieve a healthy and beautiful head shape.
What Does Head Deformity Look Like?
Parents spend a lot of time with their babies, and sometimes it’s hard to notice head shape abnormalities right away. Below are some examples of mild to severe positional plagiocephaly (flat head syndrome) and brachycephaly (short head syndrome), along with comparisons to a normal head shape.
From the Top View

From the Side View

What Causes Head Deformities?
A baby’s head is very soft and sensitive to external forces—even slight pressure can have an impact. Whether in the womb or during daily life, these forces exerted on a baby’s skull can lead to deformities. Several factors can cause head deformities, including sleep posture, premature birth, and torticollis (neck issues). If your baby already shows signs of severe head deformity, please consult a doctor as soon as possible. Today, we will share how to help your baby sleep in the correct posture to avoid head deformities.
How Can Newborns Sleep for a Beautiful Head Shape?
The first three months of a newborn’s life are the golden period for shaping the head. During this time, paying attention and making slight adjustments can have a significant impact.
1. 0-3 Months: Side Sleeping and Occasional Back Sleeping
During the first three months, a baby’s respiratory system is still developing, and sleeping on their back can increase the risk of milk aspiration, leading to choking accidents. Therefore, side sleeping is recommended, and babies can occasionally sleep on their back during the day when supervised. However, when side sleeping, ensure that the baby’s entire body and head are turned to the side. Alternate between the left and right sides to prevent positional flat head. Additionally, using items like pillows or blankets to support the baby’s back and help maintain the side-lying position can prevent the baby from rolling over.
2. 4-6 Months: Back Sleeping, Adjusting According to Head Shape
After three months, the baby’s head and body have developed more, and it is appropriate to use a pillow to assist with head support. The pillow should not be too high—around 1-3 cm is ideal. At this stage, it’s important to help the baby turn over regularly to promote healthy head development.
3. 6-12 Months: Side and Back Sleeping
By the time the baby is six months old, their head shape is mostly set, but there is still a risk of flattening or tilting. Therefore, avoid letting the baby always sleep on their back. Regularly change the sleeping position to ensure balanced pressure distribution.
Additional Tips for Head Shape Development
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(1) Alternate Sides During Feeding
When breastfeeding, make sure to switch sides regularly. This encourages the baby to change their sleeping position and helps balance the head shape. -
(2) Adjust Toy Placement
Change the positions of toys and objects around the room and crib. This can encourage the baby to turn their head and look in different directions, helping to shape their head evenly. -
(3) Adjust the Baby’s Sleeping Position
Newborns usually sleep with their face on the bed. You can adjust their sleeping position every 30 minutes to 1 hour to ensure balanced pressure on both sides of the head, which can help create a rounded head. -
(4) Change the Way You Hold the Baby
When carrying the baby, make sure to support their shoulders and neck, rather than directly lifting their head. This not only protects the baby’s cervical spine but also contributes to a healthy head shape.
Conclusion
A baby’s sleep position plays a crucial role in head shape development. To prevent head deformities, parents should try to avoid prolonged back sleeping, while encouraging side sleeping or regularly changing positions. This helps distribute pressure evenly and promotes natural head development. Additionally, using an appropriate pillow for the baby and ensuring a safe and comfortable sleep environment can significantly reduce the risk of flat head syndrome and other deformities. A little extra care in sleep position can go a long way in helping your baby develop a healthy and beautiful head shape.