What is ‘’Baby Brain’’ and why am I experiencing it?

Becoming a mother is one of the most incredible, life-changing experiences a woman can have. But while we often focus on the physical changes during pregnancy and postpartum, there’s something else that’s happening beneath the surface—your brain is changing, too. Those “baby brain” moments—misplacing your keys, walking into a room and forgetting why you’re there, or struggling to remember someone’s name—are part of a natural and necessary shift that helps you adapt to motherhood.

“Baby Brain” Isn’t just a myth: There’s science behind it

Okay, lets talk about “baby brain”, you may have heard it tossed around, often jokingly, when a new mum forgets something or gets distracted. Is it just lack of sleep, or is there more to it?

In the postpartum period, your brain goes through a lot of changes, many of which are driven by hormonal shifts. After birth, your body experiences a major drop in pregnancy hormones like oestrogen and progesterone, which affects how your brain functions. But don’t worry, it’s all part of your brain adapting to its new responsibilities!

One of the hormones that gets a lot of attention is oxytocin—often called the “love hormone.” It spikes during childbirth and breastfeeding, which helps you bond with your baby and also regulates your emotions. It’s your brain’s way of helping you stay connected to your newborn and more attuned to their needs. Think of it as your brain’s “mum mode” switch turning on. Find out more about the impact your hormones can have and sign up for a free trial at Life.Postpartum.com

Brain shrinkage? It’s not what you think

This might sound a little alarming, but hear us out: Your brain actually shrinks in some areas after childbirth. Don’t worry, you’re not losing cognitive function or becoming less sharp. In fact, it’s quite the opposite.

A study from the University of Montreal found that mothers experience a decrease in grey matter (the part of the brain involved in processing information) —particularly those related to empathy, decision-making, and attachment. This shrinkage is a form of brain reorganisation, helping you tune into the emotional and social demands of caring for a baby.

It’s like your brain is reprogramming itself to become more focused on bonding with your baby, responding to their cues, and managing your new role as a mother.

So while it might feel like you’re having a hard time concentrating on anything other than your baby, know that it’s a natural part of the process, helping you become more emotionally attuned and ready for the challenges and joys of motherhood.

How to support your brain during the postpartum period

1. Get Some Sleep: We know, easier said than done! Sleep is essential for cognitive function and emotional regulation, so take those nap opportunities when you can.
2. Eat Well: Your brain needs nutrients to stay sharp. Focus on a balanced diet with plenty of omega-3s (found in things like fish and flax seeds), folate (leafy greens), and vitamins like B12 and D to support brain health. For more personalised recipes and support from our resident nutritionist sign up for your free trial at Life.postpartum 
3. Build Your Support Network: It can be hard to ask for help, but don’t be afraid to lean on family, friends, or professionals. A strong support system can help with the emotional rollercoaster of postpartum life and prevent isolation. Join the community at Life.Postpartum.
4. Move Your Body: Whether it’s a walk around the block or a gentle yoga session—can help lift your mood and keep your brain functioning at its best. Join for your free trial at Life.Postpartum and get access to on-demand yoga and exercise programmes from our experts. 
5. Be Kind to Yourself: Don’t beat yourself up over “baby brain” moments. Your brain is doing exactly what it needs to do to help you adjust to motherhood. Embrace it, and be patient with yourself as you navigate this incredible journey. For more tips on self care have a look at this video from Dr. Margy Bowes, our resident clinical psychologist. 

Your brain is going through a lot and while it might not feel like it, these changes are helping you become the best mother you can be. From hormonal shifts to brain shrinkage (yep, really!) to the reorganisation of neural circuits, your brain is adapting to your new role—and that’s a beautiful thing.

So, the next time you forget where you put your keys, don’t be too hard on yourself. Remember: it’s all part of the process. Embrace the changes, take care of yourself, and trust that your brain is doing exactly what it needs to do to support your journey as a mum.