Newborn babies are born with several natural reflexes. These automatic movements are a normal part of early brain and nervous system development. Parents may notice their baby suddenly startling, turning toward the breast, gripping a finger, or even making stepping movements.
These reflexes can sometimes look surprising, but in most babies they are completely normal and expected. Reflexes help newborns feed, protect themselves, and begin adjusting to life outside the womb.
As babies grow, these reflexes gradually become less noticeable as voluntary movements and brain control develop.
Why babies have reflexes
Reflexes are automatic responses controlled by the baby’s developing nervous system. They are present from birth and help babies survive and interact with the world during the first months of life.
Newborn reflexes help with:
- Feeding and finding the breast
- Protecting the baby from sudden changes
- Early movement development
- Brain and nerve maturation
Doctors often check newborn reflexes during examinations because they provide useful information about neurological development.
Most common newborn reflexes
Moro Reflex (Startle Reflex)
The Moro reflex happens when a baby feels a sudden movement, loud sound, or sensation of falling. The baby may suddenly throw out the arms and legs and then pull them back in while crying.
This reflex is very common during sleep and often worries parents, but it is usually normal in young babies.
Rooting Reflex
When the baby’s cheek or mouth is touched, the baby turns toward that side and opens the mouth looking for feeding.
This reflex helps babies find the breast or bottle.
Sucking Reflex
When something touches the roof of the baby’s mouth, the baby automatically begins sucking.
This reflex is important for feeding and nutrition.
Palmar Grasp Reflex
If you place a finger in the baby’s palm, the baby tightly grips it.
Many parents notice this reflex during the first weeks of life.
Stepping Reflex
When a baby is held upright with the feet touching a surface, the baby may appear to take small stepping movements.
This reflex disappears after the first few months.
Tonic Neck Reflex (Fencing Reflex)
When the baby turns the head to one side, the arm on that side may straighten while the opposite arm bends, creating a “fencing” posture.
This is a normal reflex seen in many newborns.
Reflex timeline
Most newborn reflexes are strongest during the first weeks and months of life. As the brain matures, babies gradually gain more voluntary control of their movements.
Some reflexes disappear within a few months, while others may remain longer during infancy.
When reflexes disappear
Typical timelines include:
- Moro reflex: usually disappears by 4–6 months
- Rooting reflex: usually fades by around 4 months
- Stepping reflex: often disappears by 2 months
- Tonic neck reflex: usually fades by 5–7 months
- Palmar grasp reflex: usually fades by 5–6 months
Every baby develops at a slightly different pace, and small variations can be normal.
When to see a doctor
Speak with your doctor if:
- Reflexes seem absent in a newborn
- Reflexes appear only on one side
- Reflexes remain unusually strong for age
- Feeding difficulties are present
- Baby appears unusually floppy or stiff
- There are concerns about development or movements
Most reflex findings are normal, but medical evaluation can help if parents are worried.