What Happens to Baby’s Brain During Their First Year

All the cognitive milestones to expect those first 12 months.
save article
profile picture of Chaunie Bruisie
March 18, 2022
baby playing with toy camera
Image: Getty Images

The first year of baby’s life may just be the most important—thanks to a tremendous amount of growth and critical “brain building” that happens during those early months. These first synapses and pathways created in the brain lay the foundation for all later growth and development. Translation? All of those games of patty-cake and endless readings of the same book over and over will pay off, we promise. Below, see the stats that show just how much a baby’s brain grows during this crucial stage.

So how does all of this break down over the baby’s first 12 months? Each stage brings new abilities and levels of understanding, from social and emotional growth to reasoning and problem-solving. Here are some important developmental milestones you can expect in the first year—and how to support baby’s growth along the way.

Tap the buttons below to see how baby is changing at each stage.

To support all this awesome development, baby’s brain needs serious nutrition. If you’re formula-feeding or looking to supplement, consider Bobbie, a new style of organic infant formula, sourced with purpose and designed to be closer to breast milk. Learn more at

Please note: The Bump and the materials and information it contains are not intended to, and do not constitute, medical or other health advice or diagnosis and should not be used as such. You should always consult with a qualified physician or health professional about your specific circumstances.

save article
Related Video

Next on Your Reading List

Article removed.