This year, we broke the seal.
My 12-year-old son, Freddy, got his first smartphone.
Before that moment, I was quietly confident about how it would go. I imagined it would simply replace his old brick phone — a tool for calls, maybe the odd message, some parental remote snooping and the occasional practical use. I told myself he’d only use it when he needed to. That it wouldn’t really change much.
I was in denial.
Within a month, conversations had already started about screen time. About how long he was on it. About how hard it was to get him off it. About the effect it might be having on his still-developing brain.
And now, he’s often found slumped on the sofa, TV on in the background, phone in his lap. Barely blinking. Barely communicating beyond the occasional teenage grunt. When corrected, it’s like I’ve threatened to remove a limb. Sitting up properly feels like an unreasonable demand. Putting the phone down feels like a personal sacrifice.
I’d heard all the warnings.
“Hold out as long as you can,” they said.
“Don’t make the mistake we made,” they said.
“No need” I said, with the belief that my first born was going to break moulds and he had the “Dad of the Year” for 12 years running in the Mullan household. Things were going to be different from the stereotype.
It wasn’t.
The Hidden Cost of the Head-Down Life
Much of the conversation around screens and children focuses on attention, mood and behaviour — and rightly so. There is growing evidence that prolonged screen use affects:
- Sleep quality
- Emotional regulation
- Concentration and impulse control
- Stress hormones
- Developing reward pathways in the brain
But there’s another side to this story that often gets overlooked: the physical and developmental impact.
Children’s bodies are not small adult bodies. Their spines, muscles, joints and organs are still forming. Their posture is still being programmed.
And posture is not just about looking neat. It is about how the brain and body communicate. It affects breathing, balance, coordination, and even how safe and alert the nervous system feels.
When a child spends hours with their head tilted forward and down, shoulders rounded, neck twisted or slumped sideways, they are loading immature structures in ways they were never designed for.
To put it simply: the neck is holding up the head of a growing brain. And we’re asking it to do so in some very unnatural positions.
A Case That Still Stays With Me
I remember one young patient clearly. He was 12 years old.
By the time he came to see me, he’d already been through a long medical journey. He had headaches. Migraines. He was blacking out at school. His parents were understandably frightened.
He’d seen multiple practitioners. He’d had scans, MRIs, CTs. After months of investigation, he was eventually told the cause was stress.
When I examined him, what stood out was his neck. In particular, the top of his cervical spine, the area where the head and spine meet.
There was clear dysfunction there. With one adjustment, his symptoms settled. The blackouts stopped. The headaches eased. All the muscular weakness created by the dysfunction returned to full strength.
But the bigger question was: why had this happened?
When we looked at his daily habits, a pattern emerged. He had been spending long periods playing on his Xbox with the screen positioned to his right. Hour after hour, his head and neck rotated and tilted in the same direction.
His spine had adapted to that position. And then, it began to fail under the strain.
It wasn’t dramatic. It wasn’t a crash or an injury. It was slow, repetitive stress, the kind we rarely notice until it becomes a problem.
Why Posture Matters More Than We Think
Posture is not just about bones and muscles. It influences:
- Blood flow to the brain
- Balance and coordination
- Breathing efficiency
- Muscle tension and fatigue
- Headache and neck pain
- How safe or stressed the nervous system feels
When a child sits collapsed, chin tucked, shoulders forward, neck twisted or bent, their system is under constant low-level load. Over time, this can contribute to:
- Neck pain
- Headaches
- Jaw problems
- Shoulder and upper back pain
- Reduced attention span
- Increased fatigue
And crucially, this is happening during the years when their posture is being set for life.
What This Has Taught Me as a Parent (and a Chiropractor)
I’ve been a chiropractor for over 23 years, and I’ve run a health clinic for nearly two decades. I’ve seen thousands of patients, including many children and teenagers.
But becoming a parent gives you a different lens.
It’s one thing to understand posture clinically. It’s another thing entirely to watch your own child melt into a sofa with a glowing rectangle in his lap.
What I’ve learned is that this isn’t about banning phones. It’s about awareness.
It’s about:
- Breaking long periods of sitting
- Changing positions regularly
- Keeping screens at eye level
- Encouraging movement
- Teaching children to notice how they sit
- Creating screen-free moments in the day
We cannot undo the digital world. But we can help young bodies cope with it better.
A Quiet Responsibility
Children don’t feel posture in the way adults do. They don’t wake up with stiff necks and sore shoulders and think, “Ah yes, this is from yesterday’s screen use.”
They just adapt.
And that’s the risk.
Because what adapts in childhood often becomes fixed in adulthood.
If we can teach them, gently, without panic, that their bodies matter more than their devices, we give them something far more valuable than screen rules.
We give them body awareness.
And that might be one of the most important skills they grow up with.
