The Moro reflex: Your child’s built in alarm system
Big reactions to small things. Jumping at every noise. Finding it hard to calm down. Here’s what the Moro reflex is, why it can stay switched on, and what you can do about it.
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By Adi and Dana Latter, Melillo Method certified practitioners · Updated 14 November 2026
Moro reflex quick facts
- Also called
- The startle reflex
- Appears
- Around 9 to 12 weeks in the womb
- Usually fades by
- Around 4 months after birth
- What it does
- Alerts the baby to danger and triggers their first big breath and cry
What is the Moro reflex?
Picture a newborn lying on their back. A door slams. Their arms and legs fly out wide, their hands open, they take a sharp breath in, and for a second they freeze. Then their arms come back in, almost like a hug, and they cry.
That’s the Moro reflex. It’s the body’s very first alarm system. It doesn’t wait for the thinking brain to decide whether something is dangerous. It just reacts, fast, and calls for help.
In the first weeks of life, that’s exactly what a baby needs. As the nervous system matures, the Moro gradually switches off, or integrates, and a much calmer adult startle takes its place. You still jump at a loud bang, but you look around, check, and settle.
What it looks like in a baby
In babies, you’ll see it when they’re laid down a little too quickly, when there’s a sudden noise, or when bright light hits their eyes. Paediatricians check for it at birth, because a strong, even Moro is a healthy sign in a newborn.
Signs the Moro reflex may still be active
Some practitioners, including us, see these patterns in children whose Moro reflex hasn’t fully settled:
- Jumps at sudden noises, and takes a long time to settle afterwards
- Big reactions that seem out of proportion to what happened
- Finds busy, bright or noisy places overwhelming, like supermarkets or parties
- Struggles with change, surprises and transitions
- Seems anxious or on high alert much of the time
- Car sick or travel sick
- Avoids ball games, or flinches when a ball comes towards them
- Tires easily, because staying on alert all day is exhausting
Why it can matter
Think of the Moro as a smoke alarm. In a baby it’s meant to be sensitive. If it stays that sensitive as a child grows, it can go off for burnt toast as well as for a real fire. The child isn’t choosing to overreact. Their body reacts before their thinking brain has had a chance to catch up. That’s why telling a child to calm down rarely works on its own. Their nervous system needs to feel safe first.
How we check for it and work with it
We look at how your child responds to gentle changes in position and balance, how they breathe, how quickly they settle, and how their eyes and body react to sudden sound or light. It feels like play, and you stay in the room. We never try to frighten a child to test this.
In the Melillo Method, the Moro is closely tied to the stress response. That’s why, in the way we work, helping the nervous system feel safe comes first, before we push on with balance, other reflexes, focus or learning. Calming an overactive alarm often makes everything else easier.
New to the approach? Read our guide to the Melillo Method in the UK.
What you can do at home
These are gentle and short. Do them when your child is calm, never when they’re already upset, and stop if they don’t enjoy it.
Starfish
Sit your child in a chair. Ask them to curl up small, arms and legs crossed, chin tucked in. Then, slowly, open out wide like a starfish while breathing in. Hold for a moment, then curl back in while breathing out. Five slow rounds is plenty.
Slow rocking and deep pressure
Slow, rhythmic rocking, a firm hug or a heavy blanket over the legs can help the nervous system settle. Slow and steady is the point here.
Predictable routines
Warn your child before changes, keep mornings and bedtimes predictable, and give them a quiet corner to retreat to. It’s not an exercise, but it lowers the load while you work on everything else.
A few minutes every day does more than a long session once a week. Consistency is what makes the difference.
Want a step by step plan?
Our free primitive reflexes course is a full course, not just an intro. It shows you how to work on primitive reflexes at home, step by step, with simple daily routines.
Start the free courseQuestions parents ask about the Moro reflex
At what age should the Moro reflex go?
What does a retained Moro reflex look like in an older child?
Is a retained Moro reflex the same as anxiety?
Can teenagers have an active Moro reflex?
Can I work on the Moro reflex at home?
This page is general information for parents, written by Adi and Dana Latter, who are not medical doctors. It is not medical advice and does not replace your GP, health visitor, paediatrician or other health professional.
Ready to start?
Our free course is the easiest first step. If you’d rather talk it through, book a free 15 minute call with Adi or Dana and we’ll tell you honestly whether reflex work is worth trying for your child.
