“Baby brain.”
“Mum brain.”
We’ve all heard these terms and possibly used them after forgetting an appointment, walking into a room and wondering why we are there, or putting the milk in the pantry instead of the fridge.
For years, the idea that motherhood makes women forgetful, distracted and less capable has been accepted as fact.
But the evidence doesn’t agree.
Mothers’ brains do change, but what if the changes aren’t signs of decline at all?
Recent research into the maternal brain is challenging some long-held assumptions about motherhood. While scientists have found clear evidence that pregnancy and motherhood change the brain, they are increasingly questioning whether those changes should be viewed as a loss.
Instead, many researchers now describe motherhood as a period of significant neuroplasticity – the brain adapting to meet the demands of a new role and stage of life.
It’s adaptation rather than decline.
The Real Motherhood Brain Changes
Let’s start with what the research does show.
Pregnancy and motherhood are associated with measurable changes in the brain. Studies using MRI scans have found changes in areas involved in social understanding, emotional processing, attachment and caregiving.
Researchers believe these changes may help mothers become more attuned to their babies and more responsive to social and emotional cues. In other words, the brain appears to be adapting to the realities of caring for another human being.
“Fine Tuning” the Maternal Brain to Become More Specialised and Efficient 
For a long time, any finding that showed a reduction in brain volume was interpreted as a negative, but more recent researchers have urged us to consider a different perspective.
Neuroscientist Jodi Pawluski et al. (2022) describe some of these changes as a process of “fine-tuning.”
The idea is that the brain may be pruning or refining certain neural connections to become more specialised and efficient.
Similar adaptive processes happen in adolescence.
Learning complex new skills changes the brain. Developing expertise changes the brain. No one would argue that a concert pianist’s brain has been damaged because it adapted to years of practice. Yet when it comes to motherhood, we have often defaulted to a more negative interpretation. Perhaps because culturally, we have been more comfortable viewing mothers as depleted than transformed.
Feeling Different Doesn’t Mean You Are Less Capable
Even though the research says there is no broad cognitive decline, plenty of women will tell you they feel different.
And they’re right.
Motherhood can absolutely change how your mind feels.
You may feel more scattered, forgetful and mentally stretched. Less able to hold multiple competing priorities than you once did.
But before we assume that means your brain is functioning worse, it’s worth considering what else has changed.
- You are likely carrying more responsibility than ever before.
- You may be managing childcare schedules, school communications, medical appointments, household logistics, emotional needs, work deadlines and family relationships simultaneously.
- You may be functioning on less sleep.
- You may have fewer opportunities for uninterrupted thinking.
- You may be making hundreds of additional decisions every day.
That’s not cognitive decline. That’s cognitive load.
The Mental Load Matters
One of the challenges with conversations about “baby brain” is that they often ignore the context mothers are living in.
Imagine assessing someone’s concentration while they are carrying responsibility for multiple projects, responding to constant interruptions and monitoring the wellbeing of several other people.
Would we really expect them to perform exactly as if none of those demands existed?
Mothers are not operating with fewer cognitive abilities. They are operating with far more cognitive demands.
This is one reason why recent research has struggled to find evidence of objective cognitive impairment in mothers.
A large 2026 study comparing mothers, fathers and non-parents found no significant differences in cognitive performance across areas such as memory, executive functioning and processing speed (Siddiqui et al., 2026). Parents often reported feeling more mentally overloaded, but when researchers tested cognitive performance, the expected deficits weren’t there.
The experience was real. The impairment was not.
Why Memory Suffers
There is another piece that often gets overlooked.
Memory and attention are closely connected. For something to be remembered, it first needs our attention. When attention is divided across multiple competing demands, information is less likely to be encoded and recalled later.
Many mothers are navigating constant interruptions while simultaneously tracking an extraordinary amount of information. School notices, appointments, work deadlines, permission slips, birthday gifts, childcare arrangements, family logistics and the emotional needs of the people around them can all compete for attention throughout the day.
So when a mother forgets something, it doesn’t automatically mean her memory is worse than it was before children. It may simply reflect the reality that her attention is being stretched across far more responsibilities than ever before.
Forgetfulness is often interpreted as evidence that something is wrong, when it may be a sign of just how much a mother is holding at once.
Motherhood Is One of the Biggest Identity Shifts We Experience
Maternal brain changes are part of our matrescence, but women are also navigating other parts of their matrescence at the same time:
– A new role
– Changing relationships
– Shifting priorities
– Increased responsibility
– A changed body
– Workplace expectations
– Societal expectations
– Questions about who they are becoming.
They are often grieving aspects of their previous life while adapting to a completely new reality.
Of course, they feel different.
But feeling different doesn’t mean becoming less.
A More Helpful Way to Talk About Motherhood Brain Changes
Rather than continuing the narrative that motherhood damages our brains, it would be more realistic and supportive to say that motherhood reshapes our brains.
Many mothers are already questioning themselves, and they don’t need another story that tells them they are somehow less capable than they were before children.
We need language that reflects the complexity of what is actually happening.
The maternal brain is not a broken version of the pre-motherhood brain. It is a brain adapting to new demands, new responsibilities and a new phase of life.
It’s not always easy, and it might be confronting or confusing at times.
So, if you have found yourself wondering whether you’re still as capable as you once were, I hope this offers some reassurance.
Your brain has been adapting all along. And that deserves a little more compassion and grace.
References:
Hoekzema, E., Barba-Müller, E., Pozzobon, C., et al. (2017).
“Pregnancy leads to long-lasting changes in human brain structure.”
Published in Nature Neuroscience, 20(2), 287–296.
Pawluski, J. L., Lambert, K. G., & Kinsley, C. H. (2022).
Less can be more: Fine tuning the maternal brain.
Neuroscience & Biobehavioral Reviews, 133, 104475.
Siddiqui, M. N., Perrykkad, K., Orchard, E. R., Segal, A., & Jamadar, S. D. (2026). Baby brain? Evidence for no objective cognitive differences between mothers, fathers and non-parents in the post-partum period. Cortex.
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